Ubuntu
linux package

Keyboard sticks and repeats

Bug #764772 reported by Jason Dolan on 2011-04-18

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Expired	Medium	Unassigned

Bug Description

Randomly while typing my keyboard will stick and repeat the last letter typed until I hit another key to "unstick" it. This is a common occurring happening every few minutes.

It does not seem to matter what application I'm currently working in. I've experienced it in gnome-terminal, evolution, even in Nautilus while in the middle of changing a file's name. In fact it just happened to me as I typed this report.

It doesn't seem to be related to current CPU workload or any other obvious indicator.

I'm running Natty beta.

I had this same laptop (with the same external USB keyboard) running Ubuntu 10.10 without this issue, so I don't believe it to be hardware related.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jason 1541 F.... pulseaudio
/dev/snd/pcmC0D0p: jason 1541 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf6520000 irq 56'
   Mixer name : 'Conexant CX20585'
   Components : 'HDA:14f15069,17aa2151,00100302'
   Controls : 8
   Simple ctrls : 5
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6KHT24WW-1.06'
   Mixer name : 'ThinkPad EC 6KHT24WW-1.06'
   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: Mon Apr 18 11:33:08 2011
Frequency: Once a day.
HibernationDevice: RESUME=UUID=2db31451-f4fc-4237-999d-4b1ad55276f4
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
MachineType: LENOVO 4323CTO
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-8-generic root=UUID=22b3d8b3-d750-4f27-95c4-3c4c2c15154a ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-8-generic N/A
linux-backports-modules-2.6.38-8-generic N/A
linux-firmware 1.50
RfKill:
0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/26/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6KET52WW (1.22 )
dmi.board.name: 4323CTO
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:bvr6KET52WW(1.22):bd10/26/2010:svnLENOVO:pn4323CTO:pvrThinkPadW701:rvnLENOVO:rn4323CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4323CTO
dmi.product.version: ThinkPad W701
dmi.sys.vendor: LENOVO

Tags:

Revision history for this message

Jason Dolan (jason.t.dolan) wrote on 2011-04-18:

AcpiTables.txt Edit (303.3 KiB, text/plain; charset="utf-8")
AlsaDevices.txt Edit (471 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (69.3 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (1.0 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (8.1 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (86.9 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (1.9 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (556 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (23.8 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (732 bytes, text/plain; charset="utf-8")
PciMultimedia.txt Edit (598 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (6.4 KiB, text/plain; charset="utf-8")
ProcCpuinfo_.txt Edit (6.4 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (4.7 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.9 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (142.1 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (311.0 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (470.0 KiB, text/plain; charset="utf-8")

Brad Figg (brad-figg) on 2011-05-04

Changed in linux (Ubuntu):
status:	New → Confirmed

Revision history for this message

penalvch (penalvch) wrote on 2012-10-17:

Jason Dolan, thank you for reporting this and helping make Ubuntu better. Maverick reached EOL on April 10, 2012.
Please see this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We were wondering if this is still an issue in a supported release? If so, could you please test for this with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the kernel in the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested and remove the tag:
needs-upstream-testing

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 text:
needs-upstream-testing

If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER