IMac Ethernet Issue

I have an iMac G5,1.8GHz, 10.4.11, 512MB. When the machine is started up in the morning, it will not connect to the internet. I have replaced the ethernet cable, and verified that the ethernet wall outlet to the patch panel as well as every switch and router in between was working correctly. This is a new occurrence. nothing has changed on the network or the machine- no new software or peripherals. nothing. The network prefs indicate that nothing is disconnected. I have repaired permissions, rebooted, zapped PRAM, all of which have had no effect. Then I unplugged it, waited a minute and plugged it back in. Like magic the machine connects to the internet. But the magic doesn't last long. When the machine is powered on the next morning it will not connect unless the power cord has been unplugged first. I also tried replacing the power cord but I was still confronted with an inability to connect after being powered down. Any suggestions as to what may be causing this? Thanks in advance
Curt

Instead of just unplugging the iMac, use this formal reset SMU procedure
http://support.apple.com/kb/HT1767
If that does not help... Since it DOES work properly if you first unplug the power cord and reconnect, it does not seem to be related to software. And it would indicate that your networking gear has no problems. I think it would have to be something hardware-related, that gets reset when you unplug the power. The power supply gets reset that way, but since it runs fine after the unplugging step, it seems less likely to be the cause.
One consideration is the PRAM battery, or +backup battery+. It holds hardware settings needed at startup when the iMac is turned OFF. In older Macs, a weak or dead battery can cause problems. They are meant to last for years, but that model is now about five years old, so it could be worn out. It looks like this
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
That iMac G5 model (if 1.8 GHz) is not the iSight version, so you can use the appropriate DIY instructions from Apple. Look for the one called +Backup Battery+.
http://support.apple.com/kb/HT2278
If other remedies do not help, you may want to try replacing that battery. If you have a voltmeter handy, you can test the existing battery. A weak battery may be more disruptive than a completely dead battery, so you may want to try starting up with no battery in place, as a test.

Similar Messages

IMac Ethernet - No IP Address

So frustrated... my 10.6.8 imac's ethernet is not functioning. I get the following error:
No IP Address.... Cable Unplugged.
Any recommendations? My Airport is working fine.. but no ethernet.
Dave

Have you tried anything to cure it yourself, such as, new Ethernet cable, different port on the router/switch you connect to, check for damaged pins on the iMac Ethernet socket and as mentioned restart all the devices.
if you find that the Ethernet port is faulty on the iMac you could try one of the USB to Ethernet adapters to save changing the logic board out. I presume with your profile of OS X 10.6.8 that the computer is out of warranty. If your profile is incorrect and the machine is in warranty have Apple check it out after testing the above items I mentioned.

IMac Freezing Issue -Need Confirmation...

Hey all,
I need confirmation on whether or not zapping the PRAM seems to stop the iMac freezing issue. I have had 3 freezes within 10 minutes. I restarted after my last preparation to installing Leopard and the screen saver kicked in, which is the 'Cosmos' slide show and the graphics froze up. Screen went black and I left it for a couple of minutes. I came back to it, and had an image on the screen, but it was still locked up. So I restarted it. After boot up, I opened Activity monitor, and locked up again.
So I zapped the PRAM on this 3rd restart and have not locked up since. I'd bet 100 to 1 that if I were to restart, without the PRAM reset, I would crash within 5 minutes of the start up.
I really believe without a doubt these iMac reboot issues are related to specific EFI versions failing to initialize graphics correctly.
Can anyone confirm this? If your iMac crashes, does Zapping the PRAM fix it?
I'll be calling Executive relations contact and telling her the bad news.
Okay, so first off, this isn't a solution to this iMac plague, but it should prevent the freezing and NO, it does not have to do with removing the ATI drivers.
I was asked to install Leopard by Executive relations at Apple and told her that, as soon as I do, my iMac will freeze. So, I have been preparing the Leopard install and have crashed 3 times, in a row... at that point I said, Leopard is going to be a no go but I needed to use my iMac without it crashing. So, zapped the PRAM like I did before and immediately the graphic freezes went away.
So

Here is my experience, iMac 24:
I bought in JR NY 2 weeks ago. I had to use it without internet connection (so no updates) and no freezes.
Then I connected to internet and installed the available updates and start to get the freezes, even trying the PRAM reset.
I tried to remove the extra memory, change memory slot but no lucky, video artifacts (like pixels not refreshing) when moving the mouse over the dock icons then freeze.
I had no other softwares installed at all, only the OS applications.
I formatted the HD and reinstalled the Tiger and didn't accepted any update, so I could use the imac for 2 days without a single freeze, but some black screens when screen saver starts.
Since no freezes, I decided to update the OS again and after the first boot the freezes came back very fast, I could start a freeze in about 10 seconds.
I tried the PRAM reset without sucess and my machine was ready to go to a tech person.
Yesterday I updated the OS to 10.4.11 and did a PRAM reset after the update and tested the machine for 2 hours without a freeze or video artifacts, looks very stable, but I have to test it more.
You guys tried the Tiger last update ?
Ulisses

IMac Ethernet Not Working

Out of apparently nowhere, my iMacs Ethernet just stopped working.
I can connect to the Internet via WiFi, getting a correct IP address, starting with 192.
Howver, Ethernet is not working. It is "Connected" with a 169.254.xx.xx address. It has a Subnet Mask of 255.255.0.0. It doesn't have Router, DNS server, or Search Domain labels. As such, it cannot connect to the Internet.
All the other computers in my home have no problem connecting to the Internet via Ethernet. This problem only seems to exist on my iMac. I took my iMac into the local Apple Store, and the employees had no trouble connecting to their Ethernet. I bought and installed. new router, but the problem persists.
At this point, I'm assuming the problem is with my ISP (Comcast) - but what IS the problem, exactly?

Yes, Ive done all the obvious things like that. Ive tried resetting my
location as well, and I've renewed the DHCP lease. Ive reordered WiFi and Ethernet so Ethernet is above WiFi.
Ive fooled around a lot with this, as Ive had the problem for about a week.

IMac 2010 Ethernet Issues

Hi, I've had Yosemite for a while and ever since I installed it my ethernet has not worked so I've had to use WiFi as I was hoping it would be patched automatically at some point, but because it hasn't I'll ask here:
Does anyone know of a way to fix this problem? My WiFi works fine, if I plug in the ethernet cable my WiFi does not work and the ethernet does not work on it's own if I turn the WiFi off.
Any fixes?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

I am quite fed up with Apple and my iMac - multiple issues

I've been a Windows user for years. I've suffered through all of the ups and downs of Windows over the years, mostly the downs. I have three Windows 7 computers, and quite frankly, both have performed quite beautifully, albeit without the polish of the Mac.
Earlier this year, I decided to buy an iMac for a few reasons. First, they are just so beautiful, and even if you are going to run Windows they are probably the best Windows computers out there. Second, I wanted to do more video editing and found the Windows tools weren't very good. I also wanted to run some karaoke software (kJams) that at the time was not available for Windows.
I was basically pleased with the iMac for a few months. However, there was one problem I could never solve: the wifi connection got lost periodically, even though I had made all of the system updates. I know this is a problem with the iMac, because my numerous Windows PCs and my two iPod toouches had no problem with a wifi connection. It appears from various posts here that this is indeed a problem many others have experienced since Snow Leopard's release, and as far as I can tell, despite many updates to the Airport software it has never been fixed by Apple. Strike 1.
A couple of weeks ago, my iMac started running slow for no reason I could identify. I don't have a lot of software installed on it, I didn't download anything pirated or questionable. I did install bootcamp according to Apple's instructions, and it worked fine (I wanted to run some Windows games). I tried doing all of the things that folks suggest when your computer is running slow - repairing permissions, running Onyx, etc. None of them seemed to do anything. I tried creating a new user, it had the same problem. I also noticed various other problems with the computer: it was slow to recognize a USB hard drive (and sometimes didn't recognize it at all), external hard drives would not appear in the time machine set up, and various other problems I can't quite recall. Overall, while presumably nothing serious should have been wrong with my computer, I decided I probably should simply reinstall OS X. Strike 2.
Now, quite frankly I would have been happy to simply reset the computer to its factory state. I would point out that nearly all Windows PCs come with a separate repair partition where it is very easy to do that with one click. I guess Apple is so confident in the reliability of its computers it doesn't think this is a useful feature. So, I had to install OS X using the DVD that came with the computer. It took quite a while to do this, and actually it wasn't at all clear to me that my settings would be kept (one would think that this is something the install screen would point out - Windows makes a quite clear distinction between a "clean install" and a re-install).
I was somewhat pleased when all of my settings were there. After the long process of reinstalling, I click on the "Accounts" setting I get a message saying that the Preferences application has quit unexpectedly -- clearly there are still problems. Quite irritating given that I just spent an hour trying to re-install the OS. I google around and again find others have had this problem, but unfortunately none of the proposed fixes I try seem to work. And my computer still seems to have other problems - it still doesn't recognize external drives very well. I will say that it seemed to be running a little faster though. Strike 3.
Anyway, I decide I need to do a full clean install. When I do that, things seem to be working better, although the mouse pointer is quite jerky - I'm thinking that maybe I need to just run software update to fix that. I start the software update - a nice 1gb download is required. Now ,the problem is that I STILL HAVE THE PROBLEM WITH WIFI DISCONNECTIONS. So no matter how many times I start the download, I CAN"T FINISH IT. And Apple, in its infinite wisdom, HAS NOT WRITTEN A DOWNLOADER THAT IS SMART ENOUGH TO CONTINUE WHERE IT LEFT OFF. How hard is this to do, really? Do I now have to lug my iMac across the house to put it on a wired connection? I've already wasted hours trying to get this piece of junk working.
And the sad fact is, once I am done, I will have a very beautiful computer that can't hold an internet connection.
I have to give Apple kudos for the iMac hardware. It's great. But the software? It's fine as long as it works. But it doesn't always work - and when it doesn't, it actually at this point seems more buggy and difficult to repair than Windows. Is this the last Mac I'll ever buy? Probably. Quite frankly, it's hard to avoid the conclusion that Apple's best developers have moved on to more exciting pastures (iPhone for example). And given the number of unsolved issues posted on these forums (including the ones I mention here), it appears that Apple engineers are simply asleep at the switch.

Let me start by saying I don't use wireless so I haven't had to deal with it, and I assume you know your way around all the settings in your modem/switch and Windows 7.
http://www.google.com/search?sourceid=navclient&q=Applewifi+signaldrops
Google turned up a 43 page thread, going on for a year, not very encouraging.
a href=http://discussions.info.apple.com/thread.jspa?threadID=2142725&tstart=0&me ssageID=12175855#12175855> Dropping Wi FI Signal
Well for weeks (months?) now, since two or three weeks maybe after 10.6.4 was released, I did not have dropped wifi until today. What is different? I applied the latest security patch less than 24 hours ago.
http://support.apple.com/kb/DL1094
Safari and DNS:
http://discussions.apple.com/thread.jspa?threadID=2227251
http://reviews.cnet.com/8301-13727_7-20016549-263.html
Airport:
http://reviews.cnet.com/8301-13727_7-20012462-263.html
Joining an encrypted wireless network
When logged in, then AirPort menu bar icon shows the approximate strength of your wireless network signal. All four signal bars darkened means you have very good throughput. If you don't see this menu bar icon, enable it in AirPort preferences. http://support.apple.com/kb/HT1126
If you can focus on networking, there are some excellent people that hang out there.
http://discussions.apple.com/forum.jspa?forumID=1343
If you bought your iMac this year then it likely came with 10.6.3 and shouldn't have a whole lot of updates, outside of iTunes and Safari etc.
iMac Networking Discussion?
http://discussions.apple.com/forum.jspa?forumID=1111
Support, tutorials, how to, etc:
http://www.apple.com/support/imac/intel/
Potential sources for interference with wireless
http://support.apple.com/kb/HT1365
Bluetooth: If your computer stops recognizing your Apple wireless mouse or wireless trackpad, simply click the mouse button or trackpad surface to get it working again. http://support.apple.com/kb/TS3048
And, sometimes just knowing what make of networking equipment (linksys, netgear, d-link, even Apple). USB ADSL or a USB wireless devices don't work with Macs. Checked for firmware update for the network devices?
Changing from WEP to WPA
How do I change from WEP to WPA security, which I have been told is better. I'm sure it is simple but i cant find it.
These settings are in your wireless router, so you will have to consult the manual for how to access the administration page and change the wireless security settings. Once you have WPA or WPA2 enabled, you will need to reauthenticate your computer with the wireless network since you will have a new password. If you have problems with persistent password requests popping up, you will need to open the "Keychain Access" utility and remove all keychain entries associated with your wireless network and password.
http://reviews.cnet.com/8301-13727_7-20014188-263.html
Networking In networking utilities, the in-depth network troubleshooting and monitoring utility VisualRoute ($49.95) has been updated to fix a bug with the "whois" routine, and likewise the Wi-Fi hot spot finder AirRadar ($19.95) has also been updated with a small bug fix for the signal status not updating.
The network administration and security testing utility NetScan (free) has also been updated and now has a revamped interface and new features for port scanning as well as fixes for icon appearance and update-checking problems.
http://reviews.cnet.com/8301-13727_7-20013211-263.html
As for restore, it is different, won't be the same, but there are two ways to handle that on a Mac:
Apple TimeMachine
Clone OS X: bootable (yes, you can boot from 2nd or 3rd hard drive) - SuperDuper ($29) is superb and I update the backup (15 minutes) before applying updates.
That way I have my previous system with all data, not just an image, all my data and going back in time.
From another thread:
if you have issues when using an AirPort router, you've either got interference issues causing your problems or a system issue.
whenever possible:
1) Vist an Apple Store
2) Try your machine on their network
3) If the connection drops, make them fix it.
Reason being, I've tried and checked log after log and have never seen a connection drop inside an Apple Store.
My gut reaction would be interference but the easiest move may be to check it in an Apple Store if at all possible.
http://discussions.apple.com/thread.jspa?threadID=2142725&start=225&tstart=0
If you connect to the Internet or a network in several different ways (using AirPort or Ethernet, for example), you can change the order of the network port configurations your computer tries when connecting to the Internet or a network.
To change the priority of a network port configuration:
1) Choose Apple menu > System Preferences, and then click Network.
2) Choose Set Service Order from the Actions pop-up menu.
3) Drag a service, such as Ethernet, to the top of the list. When you try to connect, Mac OS X will try the port configuration at the top of the list.©
Tip: Any Network Device listed here that you'll never use for a Network Connection should be set to 'Inactive'.

IMac Memory Issues: "Your Mac OSX Startup Disk Has No More Space Available"

Hi all,
I've done some extensive searching on my issue, and haven't been able to find a solid solution. I was hoping that if I shared my specific problem, it might shed some light on what is going on. My OS is current: 10.8.2 with plenty of HD space (over 250 GB) and 4 GB ram.
Over the past couple of days, my iMac has become very slow and laggy. Most times I will eventually get the message: "Your Mac OSX Startup Disk Has No More Space Available". This is after it has been lagging for quite a while, sometimes several hours.
I will restart, things will be sufficiently fast for a few minutes, but once I start working in any application (including any browser, or adobe software) it starts to slow down until it is eventually to a crawl, with the spinny wheel showing up often, even when only one application is open at a time. It doesn't take more than several minutes to start slowing down. Even simple things like hovering over the dock start to really lag, or opening my applications folder or System Preferences can take upwards of 15-30 seconds, even several minutes sometimes.
Here's some steps I've taken so far:
- Checked the activity monitor and system memory seems fine. No single app takes up more than 7% or so of memory at any given time. 1.65 GB active, 1.64 GB inactive, about 700 MB wired, free about 4 MB. VM size is 247 GB, CPU also seems OK: (%user around 10-20%, %System around 10%, Idle around 70-80%). No single app seems to be taking up an excessive amount of Real Memory.
- Permissions repair (It found some things to fix, but never completely finished, seemed to freeze after several hours, tried it several times)
- Checked disk for repair (no problems found), did the S.M.A.R.T check and ran tests again using Onyx.
- Re-indexed Macintosh HD
- I saw a suggestion to reset the PRAM, so I did that.
I do have the system backed up via Time Machine. Suggestions for further action are very much appreciated!

Ok, thanks. Here's a screenshot from during when it was running to a near halt (took me a while even to take the screenshot):
Here's a second screenshot after restart. All I did was open Chrome to post this:
At this exact moment I have about 500MB of memory free, but I have been watching it slowly count down starting from 2GB free when I first restarted. So far it is running smoothly, but I am guessing that it will start to lag again once the free memory dials down.
In case there is any correlation: I happened to have a strange issue with my internet connection. My router seems to be working fine, and I have wi-fi connected around the house. However, I did have my iMac connected via ethernet cable, and the wired connection was not working (was not finding a DNS address), but when I go to Wi-fi, it works. Again, could be totally unrelated, but it started just before the slowdown.

Intel imac - ethernet not working after SMC update

Hi All,
New intel 17" iMac - out of the box works fine using PPPoe, I do and SMC update, and now the connection drops. Its not my ISP, because it works fine on my powerbook, and desktop PC.
I tried reseting the SMC, but when I start the imac the fans kick in and don't stop, and the ethernet still doesn't work.
Any suggestions?
Intel iMac 17" Mac OS X (10.4.6)

I'm experiencing the exact same problem. I just got my 20" Interl iMac back from the apple Store today (took it in for service Sunday because it started getting fatal kernel panics like crazy over the weekend.) They replace the logic board and tonight was the first time I had started it up since Saturday. Immediately got the update window, downloaded the firmware update then BAM... internet connection gone down the drain. The iMac is literally less than 5 feet from our wireless router and the signal strenght is dropping to 1 bar regularly (sometimes losing connection altogether.) This was never an issue before tonight. I've had the iMac since April and it has always maintained a rock-solid connection. In addition, just to rule out the problem being the router, I have a Compaq laptop sitting on the same desk as the iMac and it's wireless connection is over 90%, and my wife is surfing the internet just fine with the Mac mini on the other desk. This is definitely an issue!

Bluberry iMac Ethernet Cable Not Plugged in???

I am trying to connect a slot loading 350 mhz imac to the internet through the built-in ethernet for a friend that needs it, but the network status pane (OSX.3 Panther) keeps saying the ethernet cable is not plugged in. I've tried several different Cat 5 ethernet cables and it still says this, so we can't connect to the isp (with cable modem). It also says the internal modem is not working, I get the red light next to it and the built-in ethernet buttons in Network status. I've tried direct connections to two different external cable modems, and three different ethernet cables, but I think the problem is a software issue that needs correcting.
I've tried zapping the PRAM, and resetting the nv-ram, but to no avail (as suggested by other posts I've come across). I ran Tech Tool 4 on it and the Network test PASSED.
Is there something I can do in Preferences or terminal to switch these back on so the network can see the modem and built-in ethernet? Any ideas or suggestions would be welcome!!
Thanks! Chuck
iMac 350 mhz Mac OS X (10.3.2)

HI Klaus
Thanks for the reply. The router seems to be working, since when I connect it to my laptop (old iBook) via ethernet cable, no problems getting internet.
I also read that to test the card and/or cable I should connect the 2 computers together and turn on file sharing. I did this and was not able to share files. I don't know if that points to the ethernet card/cable or to incompetence on my part...
But I also tried file sharing via Airport card and that worked fine, so I think I have file sharing set up properly.

Apple TV3 iTunes ethernet issues

I have been unsuccessfully trying to trouble shoot an intermittent connection/communication issue accessing iTunes with my Apple TV3 via ethernet. The issue is this: I can always connect to my iTunes music library (stored on an iMac) via wifi but connecting via ethernet is hit and miss (usually miss). Sometimes the Remote app on my iPad indicates I need to turn on Home Sharing (it is already on); other times I can connect to my iTunes music library but when I try to play a song nothing happens. Sometimes the song starts playing and then stops about 45 seconds later. Occasionally it works flawlessly.
The ethernet connection/communication problem has persisted for over a year through several ATV and iTunes software updates. Why not just be happy with a wifi connection? I am assuming that I get a fuller data stream from my lossless files via ethernet than with a wifi connection. (This could be a an erroneous assumption.)
My Ethernet network runs from my Centurylink supplied Actiontec PK5000 modem/router through a pair of Netgear Powerline adapters to my ATV in an adjoining room.
Before I take the trouble to run a hard wire ethernet cable through my crawl space direct to the ATV (to trouble shoot the Netgear Powerline part of the system) I am planning to bypass the router side of my Actiontec PK5000 and use an Airport Extreme for both the Ethernet and wireless network.
Question:
Is the idea to change over to the AE a reasonable troubleshooting step – assuming the problem might be the Actiontec router? I’m hoping the AE will have better connection technology that will play nicer with my ATV. I plan to switch the Actiontec over to transparent bridging mode and use the AE as both my wifi and ethernet router.
Changing over to the AE seems fairly straightforward in concept. My wife relies on the network for her job so I don’t want to switch to the AE if it takes me hours of connection troubleshooting while she is tapping her fingers in the background. Any advice would be greatly appreciated.

Hi Jermobu,
If you are having issues with AirPlay between your MacBook Pro and your Apple TV, you may find the information and troubleshooting steps outlined in the following article helpful, in particular the portion about Ethernet:
iTunes: Troubleshooting AirPlay and AirPlay Mirroring - Apple Support
Regards,
- Brenden

Wired iMac Ethernet corrupts network

We've had our iMac for about 2 weeks without issue. The iMac uses a wired connection to a Linksys router, and we have about 5 other devices in the house using the wireless connection.
Last night we started having problems using the Wireless for both internal network and Internet applications. After a bit of searching, we determined it was the wired iMac connection. We can connect other wired devices to the router without problem or interference.
I thought it was the router, so I used an older Netgear router that I had available. The iMac will not receive an IP address when wired to the Netgear.
So I disconnected the iMac from the Linksys, and use the AirPort for connectivity without problem.
Any ideas? At this point I think it is hardware related.

If you have your network set up so that the router assigns the IP addresses to each computer on the network, in System Preferences Network pane Ethernet Advanced settings TCP/IP tab, it should be set to Configure +Using DHCP+. That is the default setting, and the network configuration that most people use.
Is that how your network and other computers are currently set up? If not, you may need to adjust the iMac's settings to +fit in+ with what you already have set up.
If that is the current setup, you may want to reset everything. Power off all computers. Power off the router. Turn the router back on and give it a few minutes. Then power on one computer at a time and check that is has joined the network (has Internet access), saving the iMac for last. Power on the iMac and see if it still disrupts the connection of the other computers.

IMac connectivity issues

my friend recently purchased a intel based iMac computer earlier in the summer. he used it at home for a month or two with no internet connectivity problems (using airport). this past week we moved into an apartment to start the new school year and we had cable internet set up. we have a trendnet wireless router. i am having no problems connecting to the network and internet on my powerbook g4. my friend on the other hand, can not connect to the network with his iMac. the airport drop down menu shows our network name as well as the other networks in the area, but every time he tries to connect to the network he is given an error connecting message. we have been messing with the network settings on the iMac to no avail. he is unable to connect to the internet via ethernet as well, including when he went straight from the cable, bypassing the router. i believe the problem lies somewhere within the iMac's settings because my computer has no issues and the internet still did not work on the iMac when the router was based.
if anyone has any ideas what's going on with this and could provide some help it would be appreciated.
thanks!

Hello pahoehoe13. Welcome to the Apple Discussions!
Let's first check your friend's AirPort settings on their iMac...
System Preferences > Network > Show > Network Port Configurations
o Verify that an AirPort option exists. If it does not, click "New" to create one.
o Verify that AirPort is "On" (checked)
o Verify that AirPort is at the top of the list. If it isn't, you can drag it to the top.
Systems Preferences > Network > Show > AirPort
AirPort tab
o By default, join: Automatic
TCP/IP tab
o Configure IPv4: Using DHCP
o Configure IPv6: Automatically or Off
Proxies tab
o Configure Proxies: Manually
o Select a proxy server to configure: <All proxies should be unchecked unless you specifically require a proxy for Internet access.>
o Exclude simple hostnames (unchecked)
o Bypass proxy settings for these Hosts & Domains: <leave blank>
o Use Passive FTP Mode (PASV) (checked)

IMac Ethernet: Cable YES but DSL NO, any help?

Looking for help on internet connection problems with new iMac. I've posted this issue under a topic that is now marked as solved, however I do not see the solution.
I have a new 17" iMac intel. It hasn't been opened so it has the 512 MB RAM it came with, no other alterations, only added one application that's required for the business where this will operate.
I was able to easily and successfully connect to the internet using a high-speed cable modem (Rogers in Canada).
The computer is being used in a location where cable is not an option, so high speed DSL (Bell Canada) was chosen. I have not been able to successfully connect to the internet with this service.
Here's the steps taken:
1. Hooked up Speedstream 5200 modem as directed, followed set-up steps for TCP/IP as directed. Tried to connect. Connection times out, says there is no connection. When the system or modem is rebooted the lights on the modem suggest everything is working fine, according to the manual. There is also a green 'light' next to Built-in Ethernet in Network Preferences. This 'light' only goes red after trying to connect, and the ENET light also goes out on the Modem.
2. Spent a fair amount of time on the phone with Bell. Tried connecting using PPPoE without success. Tried to "configure the modem" by connecting to 192.168.2.1 but could not. Tried connecting without a splitter, made sure that phones on the line had the filter applied, all the standard issue steps from Bell. They could only suggest it was a Mac hardware problem. They were not swayed by the fact that I could easily connect using cable modem. Their Mac support is minimal at best.
3. I've tried deleting the Built-in Ethernet as suggested elsewhere so it is 'rebuilt'. I've installed 10.4.6 Combo update (twice) and it hasn't helped. I've pinged 127.0.0.1 (as suggested elsewhere) without packet loss which I've read likely suggests it isn't the systems ethernet port.
I've not applied the recent firmware update as I don't want to use windoze on this machine, but will apply it if it'll help in some way.
Can anyone suggest the next step. Am I missing something here? I've been troubleshooting through various forums looking at my options, thus some of the steps above. All the usual maintenance steps are taken (repair permissions, remove other devices, etc.).
I've been able to successfully set up the internet on many a Mac system since OS 7, but I'm no networking genius, things just worked as they were supposed to.
Any hints, tips, resources, links or direction would be helpful.

are you getting an ip when set to using dhcp? if you are supposed to configure your modem using dhcp, make sure the "connect using pppoe" option on the pppoe tab is unchecked (make sure you have "show" set to built in ethernet) you should be able to type in the gateway ip address listed into a web browser to access the setup screen. then go from there. if you dont see one you might try clicking the renew dhcp lease button. if still nothing you might reset the modem (usually hold the reset button until lights flash) then check again
on the other hand if your isp has the modem setup in "bridged mode" there may be no ip to access, then your stuck trying to use the macs pppoe client to connect to the isp thru the virtual pipe thats supposed to be there.
imac g5 Mac OS X (10.4.3) 1.8 17"

Ethernet Issues with Time Capsule and Airplay

I am running OSX v10.9.2. I have a 3-week old 3TB Time Casule (TC) connected by Ethernet cable to a DSL modem. I broadcast our wireless network from the TC rather than from the DSL modem because of the faster speed that TC provides. My computers (iMac also 3 weeks old) and a Windows laptop are connected to the network via a fibre optic cable LAN. There are also three 2nd generation Airport Express modules which I use to push music around the house.
When I connect my iMac to the WiFi network, I have zero problems reaching Time Capsule, backing up my iMac using Time Machine or pushing music throughout the house.
However, when I switch to Ethernet (my preferred network access), the TC and the Airport Express units drop (have orange warning signs in Airport Utility). Additionally, TC drops from my “finder shared menu” (but oddly enough, not each and every time). When this happens, I switch to WiFi and all returns to normal.
Since I prefer using Ethernet, what can I do to eliminate this problem…or is this something that I need to wait for Apple to address/resolve? I was online with Apple Support and they claim the problem stems from the OSX Firewall and that I use bitDefender as a virus protector. However, when I disable them (and restart the computer each step of the way), the problem is not solved. It may work for about a minute or 2 (only after restart) but then it all drops.
Any advice would be greatly appreciated!!

You might need to explain a bit more as fibreoptic hookups in a house are too expensive for most of us. Fibre technology is well developed but not at home level routers and switches... so unless you are using enterprise level stuff I don't know how to test it.
You do need to understand something.. the airport utility at least is 100% dependent on wireless now. It has taken me ages to understand that simple point. v5 utility was happy with either ethernet or wireless.. but the actual connections to the wireless routers as far as the OS in the computer is concerned is totally wireless. Even if you use ethernet your wireless should also be active. Just make sure it is second on the list of networks so whenever ethernet is up, it is preferred over wireless.
There is a big FATT BUTT here.. I do not like running wireless and ethernet simultaneously as I found it slows the network.. even if the order is correct. But I have not done the tests on Mavericks with the newest AC model TC. It definitely causes slow downs on earlier OS.
It is not actually possible to avoid the wireless issue .. although you can manually mount the disk in finder. That should stop it dropping out.. mostly.
Another BIG FATT BUTT.. you need to mount by IP not network names.. I have found in Mavericks network names drop in and out like a yoyo. So the only reliable method is using IP addresses. That means you need static IP on the TC at least, which is no problem as long as it the main router. If you have it in bridge, use the dsl modem to fix the IP of the TC via dhcp reservations. Or set static IP on it.
Then you go to Finder.. Go in the top menu, Connect to server.
Type in AFP://TCIPaddress
eg at default. AFP://10.0.1.1
It will search and discover the TC, and then request a password.. this is your disk access password on the TC, mostly set to device access password. It is public by default. Most likely the setup wizard will have forced you to change it.
Don't forget to save it in your keychain.
Will this fix it.. hmmm no.. probably not??
There are more bugs here than you can poke a stick insect at.
Perhaps once a week you will need to reboot everything... If it is daily or hourly.. then something more needs doing.
I do strongly recommend everything on the network using SMB names.. Not apple naming convention. Since Mavericks is now using SMB networking protocol by default.
Fix it everywhere on everything. Keep names short, no spaces and stick to pure alphanumeric.
Tell us if it helps or even if not.. !!

IMAC 27" issue when use as external display

I just boought an IMAC 27 inches, I have an issue using it as external display for my macbook pro. both machines support thunderbolt. The issue is not connecting it from my macbook pro to IMAC, but when I want to release and use my IMAC again as computer by clicking CMD F2, the connection did not get released. I tested using IMAC at apple store and it works fine. I can connect and disconnect using CMD F2. finally I checked the thunderbolt firmware in my IMAC and compare with the one at Apple store. They are not the same. the one I have is Port Micro Firmware Version: 2.1.1 and the one at Apple strore is Port Micro Firmware Version: 2.0.7. is there any fixed?

This is only possible by setting up ScreenRecycler or using Virtual Network Computing; all of these methods work over an Ethernet, FireWire, or wireless network.
(80641)

IMac Ethernet Issue

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