Display remains fully dimmed after resume from suspend
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
Medium
|
Unassigned |
Bug Description
After resuming from suspend the display returns fully dimmed, and display brightness can't be adjusted, neither using FN keys, nor using KDE power management control. The issue occurs regardless whether the suspend state was activated by low battery, by closing the display, or by explicitly selecting sleep mode in KDE. Killing and restarting X does not solve the problem. A reboot does.
---
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: michael 2554 F.... pulseaudio michael 2784 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120424)
MachineType: Hewlett-Packard HP EliteBook 8530w
Package: linux (not installed)
PccardctlStatus: Socket 0: 3.3V 16-bit PC Card Subdevice 0 (function 0) bound to driver "pata_pcmcia"
ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageV
Tags: trusty
Uname: Linux 3.13.0-39-generic x86_64
UpgradeStatus: Upgraded to trusty on 2014-05-10 (181 days ago)
UserGroups: _MarkForUpload: True
dmi.bios.date: 06/24/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PDV Ver. F.0C
dmi.board.name: 30E7
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 90.23
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-
dmi.product.name: HP EliteBook 8530w
dmi.product.
dmi.sys.vendor: Hewlett-Packard
description: | updated |
tags: | added: bios-outdated-f.20 |
Changed in linux (Ubuntu): | |
importance: | Undecided → Low |
status: | Confirmed → Incomplete |
tags: | added: precise |
Additional information: Unlike described in https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/451282 the problem does not disappear with subsequents suspen/resume cycles.
So far a reboot is the only way for me to get display brightness back.