Public bug reported: This seems to be a similar problem to the one described here: http://ubuntuforums.org/showthread.php?t=1829744
With recent Ubuntu versions, though, gnome-settings-daemon is not there anymore. I tried to kill unity-settings-daemon as a workaround, but it doesn't work. I followed the instructions here: https://wiki.ubuntu.com/Hotkeys/Troubleshooting and I can correctly see the keypresses be received correctly both with xev and with evtest with the latter, I can see that the interesting hotkeys codes: Event: time 1427077143.513820, -------------- SYN_REPORT ------------ Event: time 1427077143.616493, type 4 (EV_MSC), code 4 (MSC_SCAN), value ae Event: time 1427077143.616493, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 0 Event: time 1427077143.616493, -------------- SYN_REPORT ------------ Event: time 1427077144.292461, type 4 (EV_MSC), code 4 (MSC_SCAN), value b0 Event: time 1427077144.292461, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 1 And the events can be seen even when the volume hotkeys are unresponsive (the volume is not updated). This seems to happen more often (or at least it's more noticeable to me) when watching something in fullscreen. Keypresses usually aren't lost, but are simply delayed and buffered, and thus if I press the button 5/10 times, after half a minute of so, all the keypresses will trigger the corresponding action all together ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: udev 208-8ubuntu8.2 ProcVersionSignature: Ubuntu 3.16.0-31.43-generic 3.16.7-ckt5 Uname: Linux 3.16.0-31-generic x86_64 ApportVersion: 2.14.7-0ubuntu8.2 Architecture: amd64 CurrentDesktop: Unity CustomUdevRuleFiles: 80-docker.rules Date: Mon Mar 23 02:07:48 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2014-08-17 (217 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: LENOVO 20AQCTO1WW ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-31-generic.efi.signed root=UUID=259bbe5f-d5f2-42de-89f9-58a9d77e4a21 ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: Upgraded to utopic on 2014-10-16 (157 days ago) dmi.bios.date: 05/20/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET77WW (2.27 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0E50512 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET77WW(2.27):bd05/20/2014:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQCTO1WW dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug utopic -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1435108 Title: Volume hotkeys stop working (dozens of seconds of delay) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1435108/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs