Disconnects when using ethernet

I have no idea why my macbook does this, but every few days, for a period of a few days, it disconnects itself from the internet every minute or so.
Every time it does this, i've noticed it changes its IP address. I suspect that has nothing to do with it though.
I'm using my university's network via ethernet. If I connect to their campus wireless network, i don't encounter the same problem. That isn't a good alternative though, as it is considerably slower. also, my dorm room is just far enough away that the signal can be inconsistent.
I considered that my ethernet cable/wall plug might be faulty. I tested out several other cables and wall jacks and encountered teh same problem. Also, that wouldnt' explain how i do get a few days of normal connectivity between these periods of disconnecting.
I honestly have no idea what the problem could be. I know very little about networking...
Any help would be much appreciated!

If you using DHCP ip address, the ip changes might not affect that and wont disconnect you from internet.
It might changes when you try to reconnect and give you new ip address since the previous one already taken by others.
Consult your dorm network administrator about your problem, and try to turn off your wireless while using wired connection (I don't see it related, but give it a shot).
Good Luck.

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Ichat, AIM, & Adium all frequently disconnect when using Air

Ichat, AIM, & Adium all frequently disconnect when using Airport. I use a Linksys Wireless Router with an Airport extreme card. When directly connected to the router, I have no problem. Using a PC with Windows XP, AIM operates fine. Safari and Firefox work fine, although sometimes I receive errors connecting to pages, when I try again no problem. Using any of the chat programs, I lose connection, but then can reconnect. After a few times, the AOL servers will prevent login.
I use COMCAST Cable internet service. My wireless router uses WEP encryption. I would switch to an AIrport Base station, but doubt it would correct the problem.
I have had this problem previously, but it corrected itself. now it is making chat programs unusable.
Any ideas?

Hi John,
By default Linksys units normally have the IP address of 192.168.1.1
Is this true for both your units or have you changed one of them ?
You may only find this out if you connect directly to the Modem one.
Also you have not said if only one of them is doing DHCP.
Example pic 3 on this page. This shows this device as getting it own contact IP address by DHCP (like from your ISP). Further down the page in the pic it shows the device is also acting as a DHCP server to the local net.
If your router is set up like this it could be getting an IP address usng DHCP like this device shows and that would tend to mean that the Modem is acting as a DHCP server as well.
If both devices still have the default IP addresses you will have conflicts, which probably explians the problems you have.
Ralph

Some RST are seen during TCP disconnection when using SSL connection

Some RST are seen during TCP disconnection when using SSL connection
It is expected that the disconnection sequence for a secure connection to be as follow:
client ************************* server
--- alert (warning, close notify) --->
<--- alert (warning, close notify) ---
in any order;
and then:-
--------------- FIN, ACK ------------>
<----------- FIN, ACK ---------------
------------------ ACK ----------------->
Instead of the sequence described above, the TCP connection for a secure connection is closed with an RST.
For instance, Wireshark capture shows that an SSL+SASL TCP connection is closed in the following manner:
client ************************** server
--- alert (warning, close notify) ---->
---------------- FIN, ACK ------------>
<--- alert (warning, close notify) ---
<----------- FIN, ACK ---------------------
------------ RST -----------------> *(This RST message should be investigated, an ACK message was expected)*
Server: OpenLDAP: slapd 2.4.23
Client: (java version "1.6.0_16")
import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.ldap.InitialLdapContext;
import java.util.Hashtable;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.StartTlsRequest;
import javax.naming.ldap.StartTlsResponse;
class Client {
private static final String DEFAULT_INITIAL_CONTEXT_FACTORY = "com.sun.jndi.ldap.LdapCtxFactory";
public static void main(String[] args) {
//SSL
try {
System.setProperty("javax.net.ssl.keyStore", "c:\\\keystore");
System.setProperty("javax.net.ssl.keyStorePassword", "adminadmin");
System.setProperty("javax.net.ssl.trustStore","c:\\\keystore");
System.setProperty("javax.net.ssl.trustStorePassword","adminadmin");
// Set up environment for creating initial context
Hashtable env = new Hashtable(11);
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
// Must use the name of the server that is found in its certificate
env.put(Context.PROVIDER_URL, "ldap://1.2.4.4:16415");
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, "cn=manager,dc=operator,dc=com");
env.put(Context.SECURITY_CREDENTIALS, "password");
env.put(Context.SECURITY_PROTOCOL, "ssl");
// Create initial context
InitialLdapContext ctx = new InitialLdapContext(env, null);
// Close the context when we're done
ctx.close();
catch(Exception e)
e.printStackTrace();
Is it a bug ? Can I expect to have a patch for this issue?
Regards,
Olivier
Edited by: 975464 on 6-Dec-2012 11:21 AM

I agree it should be an ACK not an RST but it doesn't really matter. The connection is closed, and as neither the client nor the server has any pending data it is benign. Worth investigating in a later JRE.

Detect Client Disconnect When using RTMP

Hello,
I hava a Java Server and Clients using RTMP. I've read somewhere that I can detect instantly client disconnection when using RTMP. However I cannot find an example code (in Java) that demonstrates this functionality? Can you help me please?

I am not sure how your client looks, however the lient connect using NetConnection under the hood which spits NetStatusEvents's and you can listen to them ...
C

FMS auto disconnects when using a class

I am trying to implement a very simple class that will create
an instance of the NetConnection object and connect to the FMS
server. However, the client will connect then immediately
disconnect when the swf is published. My code is as follows...
FLA Code:
import _includes.*;
var obj_conn:Conn = new Conn();
obj_conn.connect();
Conn.as Code:
class _includes.Conn
public function Conn()
public function connect()
var nc:NetConnection = new NetConnection();
nc.connect("rtmp://localhost/classtest");
Please note that the connection works fine if I just create a
NetConnection variable on the FLA itself in the timeline. Any
suggestions/help would be appriciated!

it think this is happen because you use local variable : your
variable is delete at the end of connect() so your NetConnection
will be closed in the same time.
try this:
Conn.as Code:
class _includes.Conn
private var objNetCon:NetConnection;
public function Conn()
public function connect()
this.objNetCon = new NetConnection();
this.objNetCon.connect("rtmp://localhost/classtest");
}

Network disconnects when using youtube on ipad air

network disconnects and turns it self off when using youtube app on ipad air

Hello paulm250m
Thanks for using Apple Support Communities.
For more information on this, take a look at:
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/ts1398
Wi-Fi disconnects or signal strength is less than expected
Move closer to the Wi-Fi router (access point).
Check for sources of potential interference.
Remove any case, stand, or other accessories from your iOS device and see if signal strength improves.
Reset network settings by tapping Settings > General > Reset > Reset Network Settings. Note: This will reset all network settings including
previously connected Wi-Fi networks and passwords
recently used Bluetooth accessories
VPN and APN settings
Best of luck,
Mario

T440p: internet disconnects when using BT mouse

I have the 2x2 Thinkpad wireless card and when I use my bluetooth mouse the internet disconnects and I get a "limited connection". I have the latest drivers for everything.

Hi iphetamine and Jakoob,
Remember that this is users helping users here, moderated by volunteers like me. Although there is some Lenovo presence, they can't patrol the entire community. They do try to help with some of the broader issues.
Any possibility you're in a marginal WiFi reception area, and Bluetooth interferes with it?
I don't work for Lenovo. I'm a crazy volunteer!

Blutooth disconnect when using Skype, now completely fails to reconnect

I have been experiencing the following problem when accepting or placing a video call through Skype. This never happens when running any other software. My system is an ideaCentre B520 with the stock Bluetooth keyboard and mouse using a Broadcom BCM2070 device running firmware 6.5.1.2700 and a Microsoft Bluetooth Enumerator with firmware 6.1.7601.17889.
The Bluetooth mouse and keyboard disconnect during the call and will not pair or connect wit the computer (IdeaCentre B520). The only solution that I have found work, is to remove both devices from the device manager and reconnect with the physical Bluetooth buttons on the computer and the devices. I also un- and reinstalled Skype, but the problem continues, which might be a software issue.
However, today the computer completely failed to pair and connect with the devices. The pairing dialogue is displayed after pushing the Bluetooth button on the computer. I am prompted to press the corresponding buttons on the mouse and the keyboard and the dialogue completes (code number for keyboard is entered) with the message that the pairing was successful, but drivers may need to be updated. The new drivers are installed for the HDI devices as indicated by the bubble and the grey Bluetooth window light the devices as connected. The Bluetooth box will then go into a repeated flickering between connected and disconnected until both devices are deleted from the device manager terminal. Both devices continue to blink as if searching for the receiver.
I had to switch over to a wired mouse and keyboard to type these lines. But this defies the purpose.
I sincerely appreciate any suggestion you might have to solve this problem and get the devices to talk to one another again.
Thanks in advance.
hailaender

You use wrong bluetooth software. The only one that should work is 6.4.0.2100. You can download it from Sony website. I know it may sound strange but I have tested them all. Give it a shot and see what happens.

Kernel oops, then panic, then catastrophic crash when using ethernet

I'm running arch on my laptop, using netcfg to manage networks. I can connect with no problems using wireless, to any kind of wireless network, which is what I've been doing most of the time, as my house until recently only had wireless in the first place.
A few months ago I was at a friend's house, and we hooked up my computer to their wired internet. Within about a minute or two, while I was still in tty1, the screen flickered briefly, dumped out a bunch of messages (three or so, I didn't get a chance to look clearly) that said "uuuhhhh... Dazed and trying to continue." Then it did a panic, and dumped the panic message. About a second after that, the screen became frenetic and staticy and it starting blurring and stretching the display (hopefully someone else knows what I'm talking about because i can't really describe it any better). Never before have I had THAT part happen on a kernel panic.
I just ignored it because wireless works fine, so I figured maybe something was odd about their network. That was a few months ago.
Recently I installed wired connections in my own house and connected it... Same thing. Every time. It could take thirty seconds to happen, it could wait about twenty minutes... But eventually, the computer WILL go down.
I thought it might have something to do with hardware interrupts, because when I logged dmesg and tried to make it happen again it kept mentioning irqs and PS1 (my mouse i think). But I don't know. It doesn't mention a panic in the log, nor an oops... Nothing. The log just ends.
Here is a link to the file I dumped it into: http://pastebin.com/kXp3P3GG
Anything else I should check?
--Scott
Edit: There's a good chance this belongs in hardware.
Last edited by scott_fakename (2013-04-01 04:56:12)

So I tried upgrading my BIOS with a CD i got from the toshiba website. I tried numerous different kernel options... Turning off ACPI in various ways (pci=noacpi, acpi=noirq...) prevent it from crashing but disable network access.
I did notice a more clear look at the oops. It said that it was due to "unknown reason 3d." Does that mean anything? And it said "do you have a strange power management setup?" or something very like that. I do have laptop-mode-utils installed, but I don't see any mention of any problem like this around the documentation of laptopmodeutils. Is that a possibility?
Does it make sense to install something like irqbalance, or isapnp? Does that have any chance of changing anything?
Also, I don't know if it's normal but when I boot the usual way, and then cat /proc/interrupts, I get:
CPU0 CPU1
0: 54 0 IO-APIC-edge timer
1: 76 3990 IO-APIC-edge i8042
7: 1 0 IO-APIC-edge
8: 0 1 IO-APIC-edge rtc0
9: 0 0 IO-APIC-fasteoi acpi
12: 1767 55866 IO-APIC-edge i8042
16: 325 8747 IO-APIC-fasteoi snd_hda_intel, rtlwifi
17: 2 105 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2, ehci_hcd:usb3
18: 0 0 IO-APIC-fasteoi ohci_hcd:usb4, ohci_hcd:usb5, ohci_hcd:usb6
19: 189 18898 IO-APIC-fasteoi ahci
40: 67 1526 PCI-MSI-edge radeon
NMI: 9 11 Non-maskable interrupts
LOC: 103574 108430 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 9 11 Performance monitoring interrupts
IWI: 0 0 IRQ work interrupts
RTR: 0 0 APIC ICR read retries
RES: 132336 108518 Rescheduling interrupts
CAL: 40 26 Function call interrupts
TLB: 5690 2069 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 5 5 Machine check polls
ERR: 1
MIS: 0
Then if I plug in the ethernet (still booted the normal way) it adds a line directly below radeon (video card) that says 41 blah blah PCI-MSI=edge eth0 where blah blah are numbers. These are the only two devices like that, but I don't know if that's normal.
I'm grateful for the help.
Thanks,
--Scott

2005 A Add-on upgrade to Sp01 u0096 Disconnects when using VCR buttons

I have a strange issue after I upgraded my add-on to 2005 SP01.
The add-on seem to work fine except when the VCR buttons are used I get a system message Add-on XXXX is disconnected.
Im not doing anything with the VCR buttons.
And the Add-on continues to run in the background, although SAP isnt connected to it any more.
And I dont get this error when Im debugging it.
This only happens after Ive installed it as an add-on.

Hi John,
Thanks for your assistance. i followed the steps and now its working.
Regards,
Jennifer

WRT54G disconnects when using IM

When I sign in to either Y! messenger or Myspace IM my connection cuts out. I'm not 100% sure this from the router but I never had the problem before. Is the some setting that could be causing this?

how long you have been using this router
i think so you require to upgrade the rtr
just follw thw following step
Upgrading the Linksys Router's Firmware Question How do I upgrade the Linksys Router’s firmware?
Answer The new firmware adds numerous functions to the router. To setup a Linksys router with a DSL connection you need to perform four steps:
1. Downloading the Firmware
2. Upgrading the Router’s Firmware
3. Completing the Firmware Upgrade
4. Completing the Firmware Upgrade Process
Downloading the Firmware
Step 1:
Before downloading the firmware, make sure your computer has an active Internet connection. If your computer is plugged directly into the router and cannot get online, disconnect your router and plug your computer directly into your cable or DSL modem.
Step 2:
To go to the Linksys download page, click here and verify the model and version number of your Linksys product. For instructions, click the link How to find Model number.
Step 3:
After obtaining the model number of the Linksys router, enter the model number in the Enter Model Number field, then click GO.
Step 4:
Look for Locate Version Number and select the version of the Linksys product from the drop-down menu.
NOTE: In this example, we used WRT54G v.6. The Image may vary depending on the model number of the Linksys product.
Step 5:
After selecting the version, scroll down and look for Downloads For The WRT54G then click Firmware to get the latest firmware.
Step 6:
If you are using Windows XP Service Pack 2 (SP2) and Internet Explorer, you may see a “Pop-up blocked” message in your browser Information Bar. Click the bar and select Temporarily Allow Pop-ups and click Firmware again.
Step 7:
Click Save in the File Download dialog box that appears. Look for the Save As dialog box, choose a location for the file like the Desktop and click Save. When the download is complete, click Close, if prompted.
NOTE: The name of the file may vary depending on the firmware file of your router.
Step 8:
If the firmware file you have downloaded is on a zip format, double-click on the zip file and extract its contents to a single folder or to the Desktop.
NOTE: You will need to use a utility to open and extract files from the ZIP file archive. Popular software to use is WinZip®. To download WinZip®, visit http://www.winzip.com. You can also use the built-in unzipping features of Windows XP to unzip the contents from the archive.
Upgrading the Router’s Firmware
Step 1:
Access the router’s web-based setup page. For instructions, click here.
Step 2:
When the router’s web-based setup page appears, click Administration then Firmware Upgrade.
Step 3:
When the Upgrade Firmware opens, click Browse. Look for the .bin file which contains the files necessary to upgrade the router’s firmware.
NOTE: If the screen on your router’s web-based setup page looks different, click here.
Step 4:
Browse to the location where the firmware files were extracted and select the .bin file. When the file is selected, click Open.
Step 5:
Click .
Step 6:
When the upgrade is complete, the following message will appear.
Step 7:
Click .
Completing the Firmware Upgrade
Step 1:
Close Internet Explorer.
Step 2:
Reset the router. For instructions, click here.
Figure 1: Location of the Reset button of a Linksys BEFW11S4 router.
NOTE: If your router does not look like this, refer to the other images below:
Figure 2: Location of the Reset button of a Linksys WRT54GX router.
Figure 3: Location of the Reset button of a Linksys WRT54GC router.
NOTE: If the image of your router is different from the ones shown above, please consult your router documentation.
Completing the Firmware Upgrade Process
The firmware upgrade is now complete.
You can now use the router's Setup Wizard CD to configure your Internet service and set up your wireless connections.
Related Articles:
Checking the Linksys Router's Firmware
Setting-Up a Linksys Router with DSL Internet
Setting-Up a Linksys Router with Cable Internet
Setting-Up a Linksys Router with a Static IP Account
© 2006 Cisco Systems, Inc. All rights reserved.

ADUC home drive disconnected when using GPP drive mappings

Hello,
We have an issue with mapping home drives and using group policy preferences to map all other drives for our users.
We have users in multiple locations and each location has it's own storage, users in a location have their home drives on that location's storage. We assign the home drive to a user using the profile tab in the ADUC user account settings (\\storage\users$\%username%).
All other drive mappings are made through group policy preferences. This is working as expected in Windows XP.
We are preparing for a migration to Windows 7 and Windows 7 deals with this situation in a bit different manner, for some reason when you log on to Windows 7 the ADUC account settings are made first (thus connecting the home drive) and after this the group
policies are applied and prior to the first drive mapping being made all connected drives (and with this the home drive) are disconnected and then the drive mappings are applied. This behaviour occurs with replace mode as well as with update mode.
To work around this the home drives could be mapped using GPP but since we have users with home drives in multiple locations and drive mappings in GPP's do not understand the %HOMESHARE%%HOMEPATH% syntax we have to use a drive mapping per location and for
each drive mapping use item level targeting and put the users into the appropriate security group and this is more administrative burden then we'd like. Dividing users into OU's per location is not really a workable option as well.
Has anyone seen this issue before and/or has some ideas on how to deal with this or has a workable workaround/solution ?

Thank you for the reply. I have seen the article you linked to, from that I tested and found that in our situation we experience the same behaviour.
The home drive is connected to P through the AD user account profile tab, the other drive mappings are gpp drive maps and are starting from G on and are set to replace, use first available, run in logged-on user's security context, remove this item when
it is no longer applied and item level targeting is set to a security group, we have 20+ drive mappings using these settings. I have tested with setting the mapping to Update but the results are the same.
I am able to connect to the home drive manually using a UNC mapping. When I test using F for the home drive in AD user account profile tab the problem is gone. Changing the home drive letter is not an option though because we have several applications that
rely on that letter P.

Apple Wireless Keyboard is lagging and disconnecting when using Macbook Pro via Bootcamp

Hey guys,
I am using my Macbook Pro (I think from 2009) with an external monitor and the apple wireless keyboard (connection via Bluetooth).
First when I set up Bootcamp everything worked fine. But now suddenly the keyboard is lagging (letters sometimes appear after a few seconds or get stuck and typed 20 times or something) and randomly completely disconnecting.
I already downloaded the newest drivers for Boot Camp 64bit from the apple website, but this didnt solve my problem.
I tried disconnecting the keyboard on mac and then reconnecting on the Windows 7 partition again. Also didn't work.
Of course I had to reconnect the keyboard when on the mac.
But it's not that it's not working. I'm using the keyboard via Bootcamp right now. It's just that it's randomly doing this...
Now I don't know what to do. Do some of you have the same issues or have any ideas that might help?

Hey guys,
I am using my Macbook Pro (I think from 2009) with an external monitor and the apple wireless keyboard (connection via Bluetooth).
First when I set up Bootcamp everything worked fine. But now suddenly the keyboard is lagging (letters sometimes appear after a few seconds or get stuck and typed 20 times or something) and randomly completely disconnecting.
I already downloaded the newest drivers for Boot Camp 64bit from the apple website, but this didnt solve my problem.
I tried disconnecting the keyboard on mac and then reconnecting on the Windows 7 partition again. Also didn't work.
Of course I had to reconnect the keyboard when on the mac.
But it's not that it's not working. I'm using the keyboard via Bootcamp right now. It's just that it's randomly doing this...
Now I don't know what to do. Do some of you have the same issues or have any ideas that might help?

I allways get disconnected when using Apple USB Modem

Hello!
I have bought the Apple USB Modem with my MacBook and want to use it for a dail-in connection in the netherlands (kpn). But when I dail in, I allways get disconnected. After dailing in, sometimes I can open a few pages in Firefox, sometimes only one page or not any page at all. Sometimes I can open an IMAP folder with Thunderbird, but most times I get disconnected before. When I establish a SSH connetion, it works a little bit longer, but after some time the connection is terminated too. Most times I have to wait very long (>20 seconds) until a hostname is resolved, sometimes it's quite fast, somtimes resolving fails. Especially when I try to open several websites at the same time I get disconnected very soon.
Most times I get an error message like "modem unexpectedly disconnected connection".
Can someone tell me where I can get more information about WHY the connection was disconnected?
This way I cannot use the Internet, sometimes it takes up to 1 hour to come to a particular web-page (e.g. open a special mail in my web-mail account).
Best regards
Andreas

Found it:
http://discussions.apple.com/message.jspa?messageID=2751726#2751726
Thank you! I use 10.4.7, but could not try it yet, but looks promising. Does Apple know about the problem? Will there be a fix in an update soon?
Thanks again!
Seems many other people have the same problem, see comments at:
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?productLearnMore=MA0 34Z/A

HP Photosmart 7510 - loose connectivity when using Ethernet cable

Need help!
I have an HP Photosmart 7510 all-in-one printer connected to my home network via wireless.
I have 1 Windows7 laptop which successfully connects to the printer via the home Ethernet network (laptop connected via cat5) - so the overall system appears to be working fine on Windows.
I also have 1 MacMini running OS X 10.7.5 which can ONLY print/scan if the Ethernet connection is UNPLUGGED from the MacMini (thus forcing me to use my very poor and unreliable wireless signal).
As soon as I plug in the Ethernet cable to the MacMini I loose all connectivity to the printer. I have confirmed the Ethernet cable is good - as it works fine with my Windows7 laptop.
Has anyone figured out why I cannot use the physical Ethernet connection to communicate with the HP Photosmart?
Thanks!

Just making sure, you're running the Ethernet cable from the printer to the router, then running another cable from the router to the Mac, correct?
Have you added the printer's queue to the Mac once the Ethernet cable is connected, or does it not show up in Print and Scan?
I am a printer tech for HP.

Disconnects when using ethernet

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