Can't tell, sorry. I only use Unity, and as i mentioned this only occurs sporadically, very rarely, and with no way to reproduce at will that i know of. (I did see it again not long ago, btw) So even if i tried a given shell for the sake of it, i couldn't but wait for ages for it to happen or not.
It's true that there's no technical evidence that this may belong to Unity. There is equelly no evidence at all that this may nelong to kernel, either. I originaƱly reported this agaonst linux because i have no clue what package is responsible, and there doesn't seem to exist a generic "ubuntu" package to report bugs (not with apport at least) If there's some package responsible for keyboard layout settings that would be a better bet in my opinion I used to report bugs to linux when i didn't know the package in the hope that people with more knowledge would retriage them. Until i found out there's this stupid policy for all linux bugs of not even looking at it if the OP doesn't have the latest bios -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1353129 Title: [REGRESSION 2014-08] Volume up/down keys, and printScreen key, have stopped working Status in unity package in Ubuntu: Confirmed Bug description: All of a sudden, the volume keys from the keyboard have stopped working. The volume control on the top right corner of the screen does work if used with the mouse. I have both an external usb keyboard with dedicated volume + and - keys, and the builtin laptop keyboard where the volume +/-keys are the combination of the Fn key plus the up/down arrows. All these used to work up to a few minutes ago. Now none of them works. I think they stopped working with the last reboot. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-32-generic 3.13.0-32.57 ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: teo 2303 F.... pulseaudio /dev/snd/pcmC0D0p: teo 2303 F...m pulseaudio CurrentDesktop: Unity Date: Tue Aug 5 23:13:35 2014 HibernationDevice: RESUME=UUID=ff7e702a-a05a-47fd-8c14-551e81f9e9e3 InstallationDate: Installed on 2013-10-11 (298 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Acer Aspire V3-571G ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed root=UUID=5830b30e-69e8-4bb4-8a2b-bc2b43c7414a ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-32-generic N/A linux-backports-modules-3.13.0-32-generic N/A linux-firmware 1.127.5 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-05-24 (73 days ago) dmi.bios.date: 10/15/2012 dmi.bios.vendor: Acer dmi.bios.version: V2.07 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: VA50_HC_CR dmi.board.vendor: Acer dmi.board.version: Type2 - Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V2.07 dmi.modalias: dmi:bvnAcer:bvrV2.07:bd10/15/2012:svnAcer:pnAspireV3-571G:pvrV2.07:rvnAcer:rnVA50_HC_CR:rvrType2-BoardVersion:cvnAcer:ct10:cvrV2.07: dmi.product.name: Aspire V3-571G dmi.product.version: V2.07 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1353129/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp