Caps Lock sometimes switches on CAPS mode instead of switching layouts

Bug #1294560 reported by Alexander on 2014-03-19
This bug affects 11 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

I'm running 14.04 Beta with daily updates. I've got English (US) and Russian layouts, source switching is set to Caps Lock. However, if i'm typing fast I often have my input switched to CAPS mode instead of changing layout. Looks like that:

I don't know which package is responsible for this bug and what can I do to investigate it.
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
 /dev/snd/controlC2: xapg 2037 F.... pulseaudio
 /dev/snd/controlC1: xapg 2037 F.... pulseaudio
 /dev/snd/controlC0: xapg 2037 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=ff446442-f368-454d-8fc0-3b82e35f9163
InstallationDate: Installed on 2014-03-18 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140316)
 eth0 no wireless extensions.

 lo no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-18-generic.efi.signed root=UUID=d9f42808-7350-427f-8823-4f20a0dc50c2 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
 linux-restricted-modules-3.13.0-18-generic N/A
 linux-backports-modules-3.13.0-18-generic N/A
 linux-firmware 1.126

Tags: trusty
Uname: Linux 3.13.0-18-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True 09/19/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F9
dmi.board.asset.tag: To be filled by O.E.M. Z77-DS3H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF9:bd09/19/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77-DS3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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tags: added: bot-comment
John Kim (kotux) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect BUGNUMBER
When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at

tags: added: iso-testing
affects: ubuntu → linux (Ubuntu)
Changed in linux (Ubuntu):
status: New → Incomplete

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tags: added: apport-collected trusty
description: updated

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Alexander (jufofu) wrote : CRDA.txt

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Alexander (jufofu) wrote : Lspci.txt

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Alexander (jufofu) wrote : Lsusb.txt

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Joseph Salisbury (jsalisbury) wrote :

Did this issue start happening after an update/upgrade? Was there a kernel version where you were not having this particular problem? This will help determine if the problem you are seeing is the result of the introduction of a regression, and when this regression was introduced. If this is a regression, we can perform a kernel bisect to identify the commit that introduced the problem.

Changed in linux (Ubuntu):
importance: Undecided → Medium
Alexander (jufofu) wrote :

I've installed Ubuntu on 2014-03-18 (I believe it was daily build from 2014-03-17, was updated during installation), but barely used it that day, and I've noticed the issue on 2014-03-19, so I think it was there from the beginning.

Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
Danil Ilinykh (woodroof) wrote :

Has the same behaviour on current (released) version (after update from 13.10).

Changed in linux (Ubuntu):
status: Expired → Confirmed
Danil Ilinykh (woodroof) wrote :

And sometimes CapsLock works like Shift, with or without layout change.

Mike (0x656b694d) wrote :

To ensure the switch I have to wait a couple of seconds after releasing the key, which annoys very much if you used to type fast.

astroiLL (astroill) wrote :

Работающий костыль. Чтобы переключатель раскладки CAPS LOCK работал нормально, приходиться ставить пакет gnome-tweak-tool и в нем в разделе "Клавиатура" пункт "Поведение клавиши CAPS LOCK" ставить в состояние "CAPS LOCK отключен". После этого включаем CAPS LOCK как переключатель раскладки. Ubuntu 14.10

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