wireless randomly disconnects

[rkrizan]

Wireless randomly disconnects. Have to reboot to get wireless network connectivity back.

ryan@capone:~$ lsb_release -a
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 10.04 LTS
Release: 10.04
Codename: lucid
ryan@capone:~$ lspci|grep Network
0c:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100
ryan@capone:~$

Here is a section of the syslog:

May 10 15:00:28 capone kernel: [ 4323.790052] iwlagn 0000:0c:00.0: Error sending REPLY_SCAN_ABORT_CMD: time out after 500ms.
May 10 15:00:51 capone wpa_supplicant[973]: Failed to initiate AP scan.
May 10 15:01:13 capone wpa_supplicant[973]: last message repeated 2 times
May 10 15:01:13 capone NetworkManager: <info> (wlan0): device state change: 8 -> 3 (reason 0)
May 10 15:01:13 capone NetworkManager: <info> (wlan0): deactivating device (reason: 0).
May 10 15:01:13 capone NetworkManager: <info> (wlan0): canceled DHCP transaction, dhcp client pid 2162
May 10 15:01:13 capone NetworkManager: <WARN> check_one_route(): (wlan0) error -34 returned from rtnl_route_del(): Sucess#012
May 10 15:01:13 capone avahi-daemon[913]: Withdrawing address record for 192.168.1.2 on wlan0.
May 10 15:01:13 capone avahi-daemon[913]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.2.
May 10 15:01:14 capone kernel: [ 4369.530149] iwlagn 0000:0c:00.0: Error sending REPLY_SCAN_ABORT_CMD: time out after 500ms.
May 10 15:01:14 capone kernel: [ 4369.530185] iwlagn 0000:0c:00.0: Aborted scan still in progress after 100ms
May 10 15:01:14 capone kernel: [ 4370.070155] iwlagn 0000:0c:00.0: Error sending REPLY_SCAN_ABORT_CMD: time out after 500ms.
May 10 15:01:14 capone kernel: [ 4370.070254] wlan0: deauthenticating from 00:24:b2:17:a3:ba by local choice (reason=3)
May 10 15:01:14 capone avahi-daemon[913]: Interface wlan0.IPv4 no longer relevant for mDNS.
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0) starting connection 'Auto Scarface'
May 10 15:01:14 capone NetworkManager: <info> (wlan0): device state change: 3 -> 4 (reason 0)
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
May 10 15:01:14 capone NetworkManager: <info> (wlan0): device state change: 4 -> 5 (reason 0)
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0/wireless): connection 'Auto Scarface' has security, and secrets exist. No new secrets needed.
May 10 15:01:14 capone NetworkManager: <info> Config: added 'ssid' value 'Scarface'
May 10 15:01:14 capone NetworkManager: <info> Config: added 'scan_ssid' value '1'
May 10 15:01:14 capone NetworkManager: <info> Config: added 'key_mgmt' value 'WPA-PSK'
May 10 15:01:14 capone NetworkManager: <info> Config: added 'psk' value '<omitted>'
May 10 15:01:14 capone NetworkManager: nm_setting_802_1x_get_pkcs11_engine_path: assertion `NM_IS_SETTING_802_1X (setting)' failed
May 10 15:01:14 capone NetworkManager: nm_setting_802_1x_get_pkcs11_module_path: assertion `NM_IS_SETTING_802_1X (setting)' failed
May 10 15:01:14 capone NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
May 10 15:01:14 capone NetworkManager: <info> (wlan0): supplicant connection state: completed -> disconnected
May 10 15:01:14 capone NetworkManager: <info> Config: set interface ap_scan to 1
May 10 15:01:15 capone kernel: [ 4370.602740] iwlagn 0000:0c:00.0: Error sending REPLY_SCAN_ABORT_CMD: time out after 500ms.
May 10 15:01:15 capone wpa_supplicant[973]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
May 10 15:01:21 capone wpa_supplicant[973]: Failed to initiate AP scan.
May 10 15:01:21 capone NetworkManager: <info> (wlan0): supplicant connection state: disconnected -> scanning
May 10 15:01:30 capone NetworkManager: <info> wlan0: link timed out.
May 10 15:01:31 capone wpa_supplicant[973]: Failed to initiate AP scan.
May 10 15:01:33 capone kernel: Kernel logging (proc) stopped.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ryan 1846 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6afc000 irq 48'
   Mixer name : 'IDT 92HD71B7X'
   Components : 'HDA:111d76b2,102802aa,00100302'
   Controls : 24
   Simple ctrls : 15
DistroRelease: Ubuntu 10.10
Frequency: Once every few days.
HibernationDevice: RESUME=UUID=ad8764b5-3a77-4253-aab9-6745faedf2b6
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Dell Inc. Inspiron 1545
Package: linux (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-28-generic root=UUID=0d71ee9a-fc85-4811-8d30-6cf4954b6ef2 ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.35-28.49-generic 2.6.35.11
Regression: Yes
RelatedPackageVersions: linux-firmware 1.38.4
Reproducible: No
Tags: maverick kernel-net regression-release needs-upstream-testing
Uname: Linux 2.6.35-28-generic x86_64
UserGroups:

dmi.bios.date: 02/25/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0G848F
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA05:bd02/25/2009:svnDellInc.:pnInspiron1545:pvr:rvnDellInc.:rn0G848F:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1545
dmi.sys.vendor: Dell Inc.

[rkrizan (ryankrizan)]

Is this bug going to go unnoticed?

[Monkey (monkey-libre)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage . I have classified this bug as a bug in network-manager.
(With many applications, you can report a future bug directly on the appropriate package by opening the application's "Help" menu and choosing "Report a Problem". https://wiki.ubuntu.com/ReportingBugs)

[Rick Clark (dendrobates)]

I have been experiencing this since the last kernel update, I think. I am using 2.6.32-23-generic.

after a random amount of time this shows up in my logs and wireless networking fails to work until reboot:
iwlagn 0000:0c:00.0: Error sending REPLY_SCAN_ABORT_CMD: time out after 500ms.

any tips to debug?

[Matthew Sandoz (matthew-sandoz)]

I'm having a similar problem - i have kubuntu, using network-manager - I get disconnected frequently and it fails to scan. i have lenovo w510...

[vamega (vamega)]

I have a Lenovo w500 and this happens to me as well.
I also believe it might have been introduced with the kernel release mentioned by Rick.

I'm updating to the next kernel right now, and I'll report if that fixes things.

[vamega (vamega)]

I'm now using 2.6.32-24-generic-pae and it seems like the problem has disappeared.
If I start disconnecting again, I'll come back and post an update here.

[rkrizan (ryankrizan)]

I didn't have this problem whatsoever with 9.10. I upgraded from 9.10 to 10.04 and the problem arose. Every subsequent kernel upgrade doesn't fix the issue. I'm using 2.6.32-24-generic right now, and still having the same issues, albeit less frequent. I'll be installing 10.10 fresh, using the 32-bit base and the PAE kernel, thanks to Adobe of course. I really hope this issue doesn't persist on the 32-bit base!

[vamega (vamega)]

Yeah, 9.10 was flawless, and now things aren't working.
The newest Kernel does not get rid of the problem, though it does make it better than the previous one.

[Phil Lello (phil-lello-googlemail)]

I'm also seeing this issue, on an Acer Aspire 5810T, running 10.04.

Can be fixed by rmmod/modprobe on iwlagn.

Is this bug being investigated?

[Fabio Marconi (fabiomarconi)]

Hello
Is this problem present with the latest updates ?
Thanks
Fabio

[rkrizan (ryankrizan)]

So far, yes. I did the updates yesterday, and restarted the computer. Later on that evening, the issue returned. Had to restart again to regain connectivity.

[Chih-Hsyuan Ho (chih)]

I had this exact issue on my Intel 5100 wireless card for a long time. Numerous kernel updates have not fixed it. FYI. The trick I learned which would greatly improve the connection stability is to disable the N feature of the device by creating a file:

/etc/modprobe.d/intel-5300-iwlagn-disable11n.conf

In it, put the following line:

options iwlagn 11n_disable=1

Reboot the system and you may notice the improvement, too.

[Fabio Marconi (fabiomarconi)]

Helo
Wich version of ubuntu are you using ?
Fabio

[rkrizan (ryankrizan)]

I'm now using 10.10. Of course at the time I was using 10.04

-Ryan

On 12/28/2010 01:17 PM, Fabio Marconi wrote:
> Helo
> Wich version of ubuntu are you using ?
> Fabio
>
> ** Package changed: ubuntu => linux (Ubuntu)
>

[Andrei-Adnan Ismail (iandrei)]

I have also been affected by this bug in all 10.04 kernels. I have a Thinkpad T500 with Intel 5300 AGN wireless card. I will try the fix in comment #12. Usually, in my case it occurs when I'm streaming radio over HTTP using Rythmbox music player.

Simply closing the lid (thus putting the computer in sleep mode) and waking it up usually solved the problem.

[Fabio Marconi (fabiomarconi)]

Hello,
Still this issue present with the latest updates?
Thanks
Fabio

[rkrizan (ryankrizan)]

I have no had an issue as of lately. However, my wireless signal seems to degrade over the span of a few days. Rebooting resolves the issue and brings the wireless signal back up to full strength. Doesn't seem to affect usability, but incorrectly gauges signal strength. Even with the laptop sitting next to the router, after a few days it will show only 1 bar.

[Fabio Marconi (fabiomarconi)]

Hello
Are you meaning rebooting the router?
Fabio

[rkrizan (ryankrizan)]

Fabio,

No, rebooting the laptop. Rebooting the router makes no difference to signal strength.

[Fabio Marconi (fabiomarconi)]

Hello rkrizan
can you please paste here the output of the terminal for
uname -a
Thanks
Fabio

[rkrizan (ryankrizan)]

ryan@capone:~$ uname -a
Linux capone 2.6.35-27-generic #48-Ubuntu SMP Tue Feb 22 20:25:46 UTC 2011 x86_64 GNU/Linux
ryan@capone:~$

[Fabio Marconi (fabiomarconi)]

Hello
Can you please install the latest mainline kernel clicking on this links:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.38-rc8-natty/linux-headers-2.6.38-020638rc8_2.6.38-020638rc8.201103081151_all.deb

http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.38-rc8-natty/linux-headers-2.6.38-020638rc8-generic_2.6.38-020638rc8.201103081151_amd64.deb

http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.38-rc8-natty/linux-image-2.6.38-020638rc8-generic_2.6.38-020638rc8.201103081151_amd64.deb

In this exact order and refere here if it is fixed.
Thanks
Fabio

[rkrizan (ryankrizan)]

I have installed the latest kernel as asked, however, I am now having freezing issues. If I walk away from my laptop for any given amount of time, I return to an unresponsive desktop. The only thing that isn't froze is the mouse. Hotkeys do not work. I can not even open a menu.

[Fabio Marconi (fabiomarconi)]

Hello
NP, you can easily remove the non working kernel from synaptic, but I need to know 2 things.
Is your pc set to autosuspend when idle (that mean a resume failure that you can workaround with the screensaver settings)?
When pc is working the connection is good?
Thanks
Fabio

[rkrizan (ryankrizan)]

Autosuspend is disabled. The connection seems fine, even with the degraded signal strength.

[Fabio Marconi (fabiomarconi)]

Hello rkrizan
Can you please run i na terminal
apport-collect -p linux 578546
Thanks
Fabio

[rkrizan (ryankrizan)]

apport information

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[Fabio Marconi (fabiomarconi)]

[29482.688084] ata1: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xe frozen
[29482.688091] ata1: irq_stat 0x00400000, PHY RDY changed
[29482.688096] ata1: SError: { PHYRdyChg CommWake }
[29482.688103] ata1: hard resetting link
[29483.430155] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[29483.463472] ata1.00: configured for UDMA/133
[29483.463482] ata1: EH complete
[29521.350286] Skipping EDID probe due to cached edid
[29573.976341] npviewer.bin[5370]: segfault at 0 ip 00000000f61768c1 sp 00000000ff970e40 error 4 in libflashplayer.so[f5dae000+b5f000]
[29613.172951] npviewer.bin[5720]: segfault at 418 ip 00000000f60bdd16 sp 00000000ff8414a8 error 6 in libflashplayer.so[f5e50000+b5f000]
[29748.320173] Skipping EDID probe due to cached edid
[29756.091266] npviewer.bin[5848]: segfault at 418 ip 00000000f60fcd16 sp 00000000ffab1fb8 error 6 in libflashplayer.so[f5e8f000+b5f000]
[29855.585426] npviewer.bin[5905]: segfault at f2d1c0b4 ip 00000000f615a8b3 sp 00000000ffb31bf0 error 4 in libflashplayer.so[f5d92000+b5f000]
[29861.583064] npviewer.bin[5962]: segfault at 418 ip 00000000f6031d16 sp 00000000ff978a48 error 6 in libflashplayer.so[f5dc4000+b5f000]
[29865.753505] ptrace of non-child pid 3724 was attempted by: chrome (pid 2078)
[29865.753510] ptrace of non-child pid 3725 was attempted by: chrome (pid 2078)
[29865.757558] npviewer.bin[5980]: segfault at f2905004 ip 00000000f64deb8c sp 00000000ffcfc880 error 4 in libflashplayer.so[f5e75000+b5f000]
[29871.941899] npviewer.bin[6011]: segfault at f58510b4 ip 00000000f61fd8b3 sp 00000000ffa2ce30 error 4 in libflashplayer.so[f5e35000+b5f000]
[29929.127609] npviewer.bin[6033]: segfault at f02000ac ip 00000000f61918d7 sp 00000000ffd5b2e0 error 4 in
libflashplayer.so[f5dc9000+b5f000]

Hello
Sorry to said but seems that your HD is having serious problem, make a backup of all important data.

 ata1: SError: { PHYRdyChg CommWake }
ata1: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xe frozen

[Fabio Marconi (fabiomarconi)]

Try googling for this to see if there's a workaround
ata1: SError: { PHYRdyChg CommWake }

[rkrizan (ryankrizan)]

On a 1 year old laptop? I just ran a health check on my hard drives, and it's checking out without issue. I'm not having any kind of read/write issues, or any kind of software crashing.

It appears as though it could be a bug in the kernel:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/539467

[Fabio Marconi (fabiomarconi)]

Hello rkrizan
Great work
Thanks
I mark as duplicate.
Fabio

[rkrizan (ryankrizan)]

I don't believe this bug is a duplicate. Bug #539467 pertains to SATA controller errors and corresponding hard disk corruption. This bug is about wireless issues.

[Andrei-Adnan Ismail (iandrei)]

I don't seem to be experiencing this problem anymore. Hurray!

aismail@freeland:~$ uname -a
Linux freeland 2.6.32-30-generic #59-Ubuntu SMP Tue Mar 1 21:30:46 UTC 2011 x86_64 GNU/Linux

aismail@freeland:~$ cat /etc/issue
Ubuntu 10.04.2 LTS \n \l