I have ubuntu 14.04 running on Dell E5430. Backlight control is working fine, but cannot be controlled via function keys (Fn+Up/Down). When xev started all other function keys works correctly, when Fn+UP/Down is pressed sometimes event is registered after +/- 10 seconds, sometimes is lost completely.
And the issue is gone after I suspend/resume the system :|
After reboot the issue is back again.
---
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: pch3 1896 F.... pulseaudio
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=966efffc-8e7b-49c5-9303-84bffedcdacf
InstallationDate: Installed on 2015-02-22 (309 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
MachineType: Dell Inc. Latitude E5430 vPro
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-55-generic root=UUID=22a1946f-69a8-4c5d-8d53-e027bf47e12e ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.16.0-55.74~14.04.1-generic 3.16.7-ckt19
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.16.0-55-generic N/A
linux-backports-modules-3.16.0-55-generic N/A
linux-firmware 1.127.19
Tags: trusty
Uname: Linux 3.16.0-55-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 12/10/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0NVFXC
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA09:bd12/10/2012:svnDellInc.:pnLatitudeE5430vPro:pvr01:rvnDellInc.:rn0NVFXC:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5430 vPro
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
Piotr, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1491119