10ec:8176 [Lenovo Thinkpad x120e] Realtek WiFi driver instable

Bug #987014 reported by Andreas Siegert
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Linux
Confirmed
Medium
linux (Ubuntu)
Incomplete
Low
Unassigned

Bug Description

The realtec WiFi driver shipped with 2.4 beta2 is not very stable, leading to dropped connections or connection re-establisment quite often.
Just like on 11.10.

WORKAROUND: Installing the driver from the realtec site fixes the problem (rtl_92ce_92se_92de_linux_mac80211_0005.1230.2011)

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-23-generic 3.2.0-23.36 [modified: lib/modules/3.2.0-23-generic/kernel/drivers/net/wireless/rtlwifi/rtl8192ce/rtl8192ce.ko lib/modules/3.2.0-23-generic/kernel/drivers/net/wireless/rtlwifi/rtl8192de/rtl8192de.ko lib/modules/3.2.0-23-generic/kernel/drivers/net/wireless/rtlwifi/rtl8192se/rtl8192se.ko lib/modules/3.2.0-23-generic/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko]
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu6
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Generic'/'HD-Audio Generic at 0xf0244000 irq 44'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 6
   Simple ctrls : 1
Card0.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Card1.Amixer.info:
 Card hw:1 'SB'/'HDA ATI SB at 0xf0240000 irq 16'
   Mixer name : 'Conexant CX20582 (Pebble)'
   Components : 'HDA:14f15066,17aa21df,00100302'
   Controls : 8
   Simple ctrls : 5
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'
   Mixer name : 'ThinkPad EC (unknown)'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Sun Apr 22 23:04:16 2012
HibernationDevice: RESUME=UUID=9eecb564-05a8-498a-b772-ec43ce64ea03
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 002: ID 04f2:b1b4 Chicony Electronics Co., Ltd Lenovo Integrated Camera
MachineType: LENOVO 0596CTO
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=2e25b49b-32ff-441d-a4a6-eec09af48e55 ro quiet splash vt.handoff=7
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/afx not ours.
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-23-generic N/A
 linux-backports-modules-3.2.0-23-generic N/A
 linux-firmware 1.79
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-04-21 (0 days ago)
dmi.bios.date: 03/24/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8FET27WW (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 0596CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8FET27WW(1.11):bd03/24/2011:svnLENOVO:pn0596CTO:pvrThinkPadX120e:rvnLENOVO:rn0596CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 0596CTO
dmi.product.version: ThinkPad X120e
dmi.sys.vendor: LENOVO

Revision history for this message
Andreas Siegert (afx) wrote :
Brad Figg (brad-figg)
Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.4kernel[1] (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag(Only that one tag, please leave the other tags). This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc3-precise/

Changed in linux (Ubuntu):
importance: Undecided → Medium
tags: added: needs-upstream-testing
Changed in linux (Ubuntu):
status: Confirmed → Incomplete
Revision history for this message
Andreas Siegert (afx) wrote :

I tried http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc4-precise/ and did not have any network connectivity at all, so me thinks is worse.

tags: added: kernel-bug-exists-upstream
Revision history for this message
Joseph Salisbury (jsalisbury) wrote :
Revision history for this message
Andreas Siegert (afx) wrote :

That one works.

Revision history for this message
Andreas Siegert (afx) wrote :

Actually, it does not. About as stable as the 11.10/12.4 Ubuntu kernels.

Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report at bugzilla.kernel.org [1]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

If you are comfortable with opening a bug upstream, It would be great if you can report back the upstream bug number in this bug report. That will allow us to link this bug to the upstream report.

[1] https://wiki.ubuntu.com/Bugs/Upstream/kernel

Changed in linux (Ubuntu):
status: Incomplete → Triaged
tags: removed: needs-upstream-testing
Revision history for this message
Andreas Siegert (afx) wrote :
Revision history for this message
Maarten Bezemer (veger) wrote :

Thanks for taking the time to report this bug in the upstream bug tracking system this is a tremendous help. Launchpad has the ability to watch lots of upstream bug trackers and this can be done by following the procedure documented at https://wiki.ubuntu.com/Bugs/Watches. I've added the bug watch for this bug report.

Changed in linux:
importance: Unknown → Medium
status: Unknown → Confirmed
Revision history for this message
Andreas Siegert (afx) wrote :

The problem still exisits in 12.10 beta 2

Revision history for this message
penalvch (penalvch) wrote :

Andreas Siegert, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please just make a comment to this.

Also, could you please test the latest upstream kernel available v3.12 (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.12

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

tags: added: oneiric
description: updated
tags: added: quantal
summary: - realtec WiFi driver instable on Thinkpad x120e
+ 10ec:8176 [Lenovo Thinkpad x120e] Realtek WiFi driver instable
tags: added: bios-outdated-1.17
Changed in linux (Ubuntu):
status: Triaged → Incomplete
importance: Medium → Low
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