Wireless not working on Macbook but is OK on iMac

I've had a wireless network working successfully for 5 years which suddenly gave up the ghost this week. I have an early MacBook and a recent iMac, TimeMachine/basestation thing connected to a broadband modem. Given the iMac can connect to the network I assume its the MacBook rather than the network that's at fault.
The MacBook can 'see' the network name but the signal level is always zero, and when I try to connect the connection times out (despite being 30cm from the base station). Network working fine on ethernet.
I've reinstalled Snow Leopard, checked airport utility and created a new network, verified and repaired the disk and repaired permissions. have also done an Apple Hardware Test. No problems found.
I'm wondering if the wireless card's at fault. Any ideas on how I can figure this out?

If the network you have is the one selected in istumbler in your first picture then the issue I can see there is that your using channel 4.
the only wireless channels that you should really use are 1, 6 or 11.
The rest bleed and cause degradation of signal.

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Wireless not working in linux, but works fine in windows vista

Hello!
I have installed Unbreakable Enterprise Linux 4 in a dual boot config. with Window Vista on a Compaq Presario laptop. After install completed I found that my on board Broadcom Wireless Adapter (Dell 1390 Mini PC card) was not recognized. I have tried installing NDISwrapper versions 1.48 and later 1.47 (after uninstalling 1.48) because everytime I got to the "modprobe ndiswrapper" received a fatal error about an unknown symbol or parameter, and on install I also encountered a "CONFIG_4KSTACKS" error as well. The good part is the light on my laptop for the wireless adapter finally came on and the driver (bcmwl5.inf) appears to be installed and the wireless adapter identified as being present, but it still doesn't show up in the network manager gui interface. So I am out of ideas if any one can give me a suggestion for a solution I would appreciate it.

Hi there,,,,,
I have Oracle Enterprise Linux 5 installed and Intel wifi 5100 card installed on my laptop. Wireless card does not work in Linux it works fine with Vista, I have dual boot. I have downloaded and installed the microcode for the wireless card for Linux,,,it is now active but it does not take ip address from dhcp and nor does it connect when i supply manual ip. it does not even scan for any wireless network. I have WEP enabled on my wireless network. It just says disconnected.....
Please help me.....i have been trying to get this thing work for 3 weeks.
thanks.

HP Laserjet Pro 1102w Wireless (Not working on MacBook Air 10.10)

HP Laserjet Pro 1102w Wireless is not working on my MacBook Air Yosemite (v10.10).
I tried setting it up via this link: (v10.10 Yosemite, Method 3: Wireless Setup Using a USB Connection)
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c02847467#N2251
All I get under printers is the USB kind and NOT the Wireless/Bonjour kind.
Can anyone help me out?
Thanks.

Hi @Random_Pelican ,
I see that you are having issues setting up the printer on 10.10. I would like to help you out today.
If the printer has a valid IPv4 address and you still can't add the printer as a Bonjour printer, most likely Multicasting is turned off on the router, since your not able to add the printer as a bonjour device and the other devices won't recognize the printer. Just call the router company and have them turn it on.
If the printer doesn't have a valid IPv4 address please try these steps:
Reset the printer first to clear out any previous network settings.
Turn the printer off, hold down the wireless button and cancel (x button) while turning the printer back on and don't release the two buttons until the printer stops making noise.
Print out a configuration report and make sure the SSID and IP address are cleared.
Printing a Configuration Page.
Make sure Safari is set as the default browser. Sometime the Embedded Web Server won't open if it isn't.
Open Safari, across the top select the Safari menu, select Preferences, General, set as default.
I will provide the steps for 10.9, which should work the same for 10.10.
Mac OS X: How Do I Find Which Mac OS X Version Is on My Computer?
Here is a Youtube video of the Laserjet P1102w wireless installation on Maverick.
Laserjet P1102w.
You may follow the steps instead of watching the video.
You have to connect the USB cable from the printer to the computer to install the printer as a USB device first and then configure the wireless network.
Turn the printer on, connect the USB cable and install the Apple Update that should automatically load.
Then go to the Apple, System Preferences, Printers and Scanners.
Highlight the Laserjet on the left side of the window.
Then click on Open Print Queue, click on Settings, click on Utility, click on Open Printer Utility, then click on the HTML Config button.
The Embedded Web Server for the printer will open.
Click on the Networking tab, select Wireless on the left side.
Fill out this information for your network. Status make sure you select Enabled.
Apply the settings.
Then go back to Apple, System Preferences, Printers and Scanners and click the + sign to add the Laserjet bonjour printer. (might take a couple of minutes to appear) Make sure the printer listed beside use: shows the proper printer name and not the default driver, then click on the add button.
Delete the USB printer from the list from the Printers and Scanners window.
Disconnect the USB cable.
Test the printer.
Let me know how you make out.
Have a great day!
Thank You.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Gemini02
I work on behalf of HP

AE Wireless Not Working w/ MacBook

Hello All,
I have a very frustrating problem; my AE connects and delivers internet content just fine over ethernet to all the Macs in the house. However, I cannot get the wireless to work with my MacBook. I have reviewed many posts here and have changed to n 5GZ networking only, turned off security, and a host of other things all to avail. I have also done a hard reset of the AE and did a firmware rollback (I was have problems with 7.4). Here is more information on my problem: I can ping the AE (10.0.1.1) but get a 40% to 80% packet loss. I have used iStumber and get a 60% signal strength with 12% noise. I cannot ping anything outside the LAN unless I get lucky but get a 90% packet loss.
Any ideas? This is really frustrating.
Thanks, Ford

It means the device is unreadable. Probably one or the RAID slices is bad or a drive has failed. Most likely you will need to delete the RAID in Disk Utility, then reformat each of the drives. I would suggest using the Zero Data (one pass) option to allow DU to check for any bad blocks. Then recreate the RAID.

IChat screen sharing and video not working on MacBook but works on Mac pro

I have a MacBook and MacBook pro. Both have the lion os 10.7.2. I can use iChat on the MacBook pro for screen sharing, video chat, and text chatting, with others remote to me. However, I can only do texting with the MacBook. I can do screen sharing via Finder between my MacBook and MacBook pro. I can do FaceTime between both systems. I can also do FaceTime between the MacBook and anyone remotely.
I also tried installing teamviewer on the MacBook, and on a remote MacBook..... And I get the same results where I cannot share the screen, from the one that has not been working.
I have checked the settings under system preference and made sure screen sharing was enabled. I have checked under iChat under video to make sure screen sharing was checked.
The macbook that is having this problem is configured for AIM for iChat
I have run out of ideas. Any suggestions on what I might try?
Thanks

Ok,
I will list the ports in greater detail and point out when iChat uses them.
AIM Login and 1-1 Text Chatting
iChat version 1 through 5 will Log in to the AIM server on port 5190 (TCP Protocol) by default.
Since iChat 2 we have been posting here that the AIM servers allow a Login on almost any port and have been suggesting port 443.
This is used by both Web Browsers for secure Login to some sites and by the Mail app with some mail servers.
It is also below port 1024 (most domestic routers have the ports above this figure closed) In some campus situations using port 443 will normally allow at least Login and Text chatting.
iChat 6 uses port 443 by default.
File Transfers (AIM)
When doing File Transfers with AIM Buddies iChat will move to using Port 5190 on the UDP Protocol.
This cannot be changed. (This invokes the little Message about Starting Direct IM in an open Chat)
It also uses this port for Pics-in-chats, dropping Files on a Buddy's name with out a Chat or sending other files that are not pics.
In the case of Port Forwarding some devices don't like port 5190 being forwarded "twice" which is another reason for moving the login and Text chat port.
Jabber Logins
No matter what Jabber server you use ichat will use one of two ports (5222 and 5223)
Which one it uses is dependent on whether it needs and is using an SSL Login or not.
SSL Logins use port 5223 and NON SSL one use 5222 (ticking or Unticking the SSL box on a Jabber account will automatically change the port).
Google Talk is the exception in that it allow a Login on port 443 as well.
The First Apple Doc I linked you to says iChat uses port 5220 in Jabber.
I run Little Snitch and have never seen any version of iChat use this port at any time.
Bonjour
Any Mac to Mac Connection or Mac to any Bonjour able peripheral will be on port 5353.
This is normally opened (Preset) in the Mac Firewall for the Finder/System side of Sharing.
iChat needs and uses two other ports (5297 UDP and 5298 on both TCP and UDP)
As they an LAN Side connections the router would normally pass them.
At iChat 3 there were issues with the Mac Firewall (it included UDP set up and the preset in the firewall only listed them and TCP so we had people add all the iChat ports (you had to manually enter them in Tiger)
A/V Chats
No matter which Buddy List you start from iChat will do A/V chats the same way.
The Visible Invite you or your Buddy sends is on port 5678 (UDP)
In iChat 3 and earlier iChat then moves to port 5060 to send the SIP Connection Process invite behind the scenes (SIP = Session Initiation Protocol)
Port 5060 is one of 4 ports internationally agreed for SIP (How VoIP phones connect) (5060-5063).
Although ISPs were not supposed to block Through traffic many started blocking End users and then Charging them to open these ports (Many ISP were telecom companies that were losing long distant Telephone calls monies).
The SIP process then in iChat 3 contacts a server run by Apple for this purpose (Snatmap.mac.com to give it it's full name).
This acts like a old fashioned telephone operator connecting the call.
SIP is a text based process.
Your end "Calls" the operator.
The Operator "Calls" Buddy.
Buddy Accepts
iChat then negotiates the ports to be used.
In iChat 2 and 3 it uses 4 ports (vid in Vid out, Audio In and Audio Out) from "the group of 20" starting at the bottom (16384 to 16387 normally)
Three and 4 way chats uses more ports (which is why 20 are set aside)
In iChat 4 Apple realised the issue with the 5060 port and changed the way iChat worked
Since then it has Sent the invite on Port 5678 but then moved to port 16402 (it starts at the top of a smaller group of 20)
All Video and Audio traffic is also now on one port (so no need for 20 ports and iChat now lists 10).
NOTES so Far.
File Sharing during a Chat converts the Chat to Direct IM for AIM Logins
This is Peer-to-Peer in AIM
A/V Chats are Peer-To-Peer and you can actually log out of the Buddy list and continue the chat. (The exception is using iChat 6's AIM Video relay option)
Screen Sharing
Screen Sharing is an Audio Chat with a VNC connection along side.
Both bits have to wok to avoid the Pop-up to send to Apple and the Log that contains.
The Audio part is on port 16402 and the VNC part is random. (So random it is different every time you do it)
The reason it is classed as an Audio Chat+ is so the AppleScript for Auto Accept can filter out Screen Sharing connection and Not Auto Accept them.
This does have a knock on effect as far as your Router is concerned as already mentioned earlier.
You cannot Forward or Trigger the random Port so you have to use UPnP in your router to open the ports.
NOTES
Jabber File sharing may possibly be on port 1080 as listed in the Server Article I linked you to (I have also seen it written about in other stuff I have come across)
However Little Snitch does not seem to confirm this either.
Most time it will be peer-to-peer like the AIM connections for this.
However some Jabber servers do not seem to allow this and have this Jabber65 Proxy set up which passes things Server to Server in between it leaving your end and arriving at a Buddy.
This on Port 7777 but you do not need to open this port (unless you are running a Jabber server)
I have yet to test File Transfers using a Yahoo Buddy List in iChat 6.
AppleCare and Geniuses.
Previously I have been contacted by Geniuses in Stores asking to test customer's iChat.
They and the Applecare people have details about Apple wants an designed the App to work.
What they don't have is the knowledge about what it takes to set it up in the "real world".
There are literally thousands of Makes and Models of routers.
Some like the Thomson-Alcatel brand state they are SIP/VoIP ready but this means the router strips out all SIP Data trying to send it to a Phone.
Early models of Alcatels can get around this with a tweak. Later models can't.
Motorola devices tend not to have UPnP.
Apple Base Stations have Port Mapping Protocol instead of UPnP and this needs setting up.
The Zyxel range definitely does not like the dual use of port 5190 and does much better using UPnP (You almost certainly have to do your AIM login on port 443 with these).
1. I have two computers (MacPro and MacBook Pro) that are both running Lion 10.7.2 and both running iChat 6.0.1. <<-- Fine
2. The Netgear router model is: WNDR3700.    <<<<--- With any Brand there are exceptions and I do wonder about this one
3. The firewall for both Macs is turned on and in the advanced area iChat is listed as being "allowed." <<<<---- Fine
4. In iChat, under the video options, "Screen Sharing Allowed" is checked.                                        <<<<<---- Fine
5. In System Preferences, "Screen Sharing" is checked and this is for "All Users" at present.               <<<<<---- Not Required
6. There are two separate AIM accounts being used for iChat purposes.                                            <<<<<---- OK
7. In iChat preferences, each AIM account is "Enabled" under "Account Information" and the "Server Settings" show the Server as "api.oscar.aol.com" and the Port is "443" and "Use SSL" is checked.                                <<<<---- As it should be
From this and the other info in the first port it was only the router set up that seem to throw some light on a possible cause (Port Forwarding and UPnP conflict)
If just doing Port Forwarding the ports listed would have covered things (Except the Screen Sharing's random port)
Regarding your latest post.
I have table similar to that on my Sagem 2504Fast Modem/router combined device and it too seems to list a different port on the external side on occasions.
I would try the router with the Disable SIP ALG unticked (so it is not disabled). If the Help info on the right gives any info about what this Netgear version does it would be helpful.
Some are like the Thomson-Alcatels I was talking about in that it points the SIP data to a specific place (Possibly a Phone socket on the device)
Others seem to provide an "boost" to enable SIP to work and don't seem to get in the way of iChat.
Try adding the Names in Table 1 from this page and see if you can Video to those.
There are 6 names in total (I am actually only seeing one on Line as I type)
9:19 PM      Wednesday; January 25, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Internet not working on MacBook (but works on MacBook Pro)

I just got my Time Capsule yesterday, and it is replacing my Airport Extreme that worked perfectly previously. My MacBook Pro and PC work perfectly, however, I am having endless problems with the MacBook. While it connects to the network, and receives a DHCP IP (10.0.1.199), it does not connect to the Internet, or the other computers. It will work occasionally after a reboot, but then randomly stop. I have no idea what's wrong. Any help would be great.
Thanks

macmike,
I am having the same problems with one of my brand new aluminum iMacs.
The rest connect just fine but this iMac doesn't like some things on the TC...
Here is one way I found to get it to work...
Open up the Airport Utility and instead of using the Automatic channel,
change it to channel 1 or some other channel, then click on the Update button.
Then restart the troubled machine.....
See if this works for you.....
Joseph Kriz

Webcam not working for Macbook Air 2013 after upgrading to OSX Mavericks? Yahoo/ Google/Skype cam chats not working. Facetime works though. Any updates of Mavericks released to fix this?

Webcam not working for Macbook Air 2013 after upgrading to OSX Mavericks? Yahoo/ Google/Skype cam chats not working. Facetime works though. Any updates of Mavericks released to fix this?

I have a MacBook Pro Retina display: 15.4-inch late 2015 with OS X Mavericks install, only on second week.
Insight works on FaceTime, Skype, but yahoo program does not show insight cam in dropped down.
Now when I got my new MacBook Pro, I down loaded all new Skype (worked tested), FaceTime (Worked Tested), Yahoo (not worked)
Fix:
With the new Maverick you have to use there messager program Version 8.0 (4218). Once I add my yahoo account video works again.
It also supported AOL, AIM, Google Talk, Jabber.
Guess I miss it frist time... hope this helps...

Intel 6205 wireless not working with Lenovo W520

Loving the new W520... very fast, if only the wireless would work. Unable to get wireless interface functioning, won't even show up in ifconfig. I've appended requested wireless information, thanks in advance for any assistance.
1) Machine Brand and Model (PC/Laptop):
Lenovo W520
Intel Centrino Advanced-N 6205
Note: Wireless switch on lefthand side enabled, bluetooth led lights up but wireless does not.
2) Wireless Brand, Model and Wireless Chipset:
$ lspci -nn
03:00.0 Network controller [0280]: Intel Corporation 6000 Series Gen2 [8086:0085] (rev 34)
3 ) check interface:
ifconfig does not show wireless
$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
4 ) Check for modules:
$ lsmod
iwlagn 215351 0
iwlcore 139688 1 iwlagn
mac80211 269644 2 iwlagn,iwlcore
cfg80211 167809 3 iwlagn,iwlcore,mac80211
5) Kernel boot messages
$ dmesg
[ 13.497936] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[ 13.497938] iwlagn: Copyright(c) 2003-2010 Intel Corporation
[ 13.498058] iwlagn 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 13.498089] iwlagn 0000:03:00.0: setting latency timer to 64
[ 13.498181] iwlagn 0000:03:00.0: Detected 6000 Series 2x2 AGN Gen2a, REV=0xB0
[ 13.499187] lp: driver loaded but no devices found
[ 13.502642] alloc irq_desc for 22 on node -1
[ 13.502645] alloc kstat_irqs on node -1
6 ) Network configuration
$ sudo lshw -C network
*-network UNCLAIMED
description: Network controller
product: 6000 Series Gen2
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
version: 34
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: memory:d5300000-d5301fff
7 ) Scan for networks:
not relevant as no wireless interface appears
8 ) Ubuntu Version:
Ubuntu 10.10
9 ) Kernel/architecture (including 32 vs. 64 bit):
2.6.35-28-generic x86_64
10 ) Restarting the network:
sudo /etc/init.d/networking restart
* Reconfiguring network interfaces... Ignoring unknown interface eth0=eth0.
[ OK ]
Additionally, modinfo shows the following:
$ modinfo iwlagn
filename: /lib/modules/2.6.35-28-generic/updates/compat-wireless-2.6.36/iwlagn.ko
alias: iwl4965
license: GPL
author: Copyright(c) 2003-2010 Intel Corporation <[email protected]>
version: in-tree:
description: Intel(R) Wireless WiFi Link AGN driver for Linux
firmware: iwlwifi-4965-2.ucode
firmware: iwlwifi-5150-2.ucode
firmware: iwlwifi-5000-2.ucode
firmware: iwlwifi-6000g2b-4.ucode
firmware: iwlwifi-6000g2a-4.ucode
firmware: iwlwifi-6050-4.ucode
firmware: iwlwifi-6000-4.ucode
firmware: iwlwifi-1000-3.ucode
srcversion: 8F7F4C6196599FCA596C837

Hi sparhk, and welcome.
One of the Lenovo staff who frequents the forum put out a call to help you in a private forum. I do a little Linux, so I poked into it. To my amazement my first Google hit was your thread where you indicate you have solved the problem. (At least, it _looks_ like you...)
May I respectfully suggest that a post back here indicating success would be a nice touch? That way anyone who passes by looking for help with this issue will have a better chance of finding it. For posterity, here it is (see post number 25):
[SOLVED] Intel 6205 wireless not working with Lenovo W520
Glad you got it working,
Z.
The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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Integrated speakers not working on MacBook 13" 10.5.8

Speakers are not working on MacBook 13" 10.5.8, however the startup chime does work. Plug-in headphones also work. Have searched all over google for answers but nothing fixes it. How do I check the drivers are correct?
Thanks!!

Hi, Revoluzion.
Thank you for visiting Apple Support Communities.
Here are a couple troubleshooting articles that I would recommend going through when experiencing this issue.
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/en-us/HT201295
Resetting PRAM
http://support.apple.com/kb/PH6478
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Troubleshooting issues with no audio from built-in speakers on Macs
http://support.apple.com/en-us/HT203186
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Jason H.

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Do you still have your windows7 install files ?
( installation image is usually in LENOVO_PART OKRBackup/Factory ) ? I lost them :\
if yes I fear you have to enable it in win7 and then use it in win8
http://rzr.online.fr/q/lenovo# g470 s103t (Please Contact me if your s10-3T is booting win7 or support bluetooth, 3g)
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My Telus wireless only works with WEP, but if I switch to WEP the wireless goes down on the other Windows computer being used in the same house. Is there a way for both of us to get wireless internet or do one of us have to be connected by the ethernet?

My Telus wireless only works with WEP, but if I switch to WEP, the wireless on the other computers in the house (which is Windows and WPA) stops working. My computer works with the ethernet cord but I want to be wireless too! Do one of us have to sacrifice our wireless?

For assistance in getting your MacBook to connect to a WEP-protected wireless network, please check out this Apple Support article: AirPort: Joining an encrypted WEP or WPA Wi-Fi network

Wi-fi not working on macbook with version 10.8.2

wi-fi not working on macbook pro with version 10.8.2

Ooops - that's not a good sign. I would first restart the computer and then hold down the option key while accessing the Apple menu and select System Information... then go under Network>Wifi and see if you've a card installed:
Interfaces:
en1:
Card Type:    AirPort Extreme (0x14E4, 0xD6)
Firmware Version:    Broadcom BCM43xx 1.0 (5.106.98.100.16)
MAC Address:    68:a8:6d:52:c5:70
Locale:    FCC
Country Code:    US
Supported PHY Modes:    802.11 a/b/g/n
Supported Channels:    1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149, 153, 157, 161, 165
Wake On Wireless:    Supported
AirDrop:    Supported
Status:    Not Associated
Should look something like the above.
If you don't see a card, then somethings up with your hardware that can likely only be fixed (or at least diagnosed) by an Apple tech.
Good luck,
Clinton

Thunderbolt display not working on Macbook Pro - previously the display did work

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I have upgraded ML but when the MBP tries to restart with the upgrade the MBP does not restart so I susapect the ML upgrade is not complete ? When you refer to 10.8.5 supplemental is this a separate upgrade ? When I connect the Thunderbolt to the MBP the Thunderbolt charges my MBP & I can play music from iTunes via the Thunderbolt. It is only the display that is not working on the Thunderbolt

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Pages numbers and keynotes not working on handoff, but everything else is, map, mail etc. Am I alone?

Really appreciate your help with this. I am a bit of a novice here.. but.. After some more searching on this issue I notice your comments (cut/pasted below) with respect to this router and bridging mode. You mentioned that I should update my firmware on this router and that this would (if I am interpreting your reply correctly) facilitate my LAN to LAN connection and of course using this router simply as an access point and more to the point - having the use of the guest network. So my question is even if I did update firmware, seems I would still require 3rd party software to make this work? (re your last sentence in your comments below) Just need to understand the process and determine whether or not it is worth it (or maybe I should upgrade the router) but I don't want to change the configs of the network wired router at this time... and need to use the E2500 or facsimile as simply an access point with guest network functionality, Thanks much appreciated.
"Again: some E series routers already support wired bridging in firmware, i.e. to use the router as simple access point.
This is and was always possible using a LAN-LAN setup instead.
The problem with the LAN-LAN setup is, however, that you have some limitations accessing the network storage or network printer, e.g. the router doesn't have the correct time and you cannot access the storage from remote using port forwarding through your main router.
These limitations have been overcome with the wired bridge mode (internet connection type = bridge mode).
But again: this has absolutely nothing to do with wireless bridging. That's something completely different and is not supported on Linksys routers in any firmware version so far. To do wireless bridging (i.e. the Linksys routers connects wirelessly to another main router) you need 3rd party firmware."

2x2GB RAM DDR3 10066mhz not working on MACBOOK

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Not able to upgrade with 2x2GB RAM DDR3 10066mhz not working on MACBOOK only working upto 3GB i.e. 1GB + 2GB RAM.
Need help

What year or model is your MacBook? If you don't know, click the apple on the left of the menu bar, click about this mac, more info, system report and post back the model identifier.

Wireless not working on Macbook but is OK on iMac

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