screensaver backlight stuck off, system looks hung
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
GNOME Settings Daemon |
Invalid
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
High
|
Unassigned | ||
Oneiric |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
After the screensaver fades the screen to black and turns off the backlight, tapping a keyboard key does NOT turn the backlight back on again. The backlight is "stuck off" making the system appear to be hung.
This a regression in Ubuntu 11.10.
----- (original problem description) -----
[The original problem description is below, however it has been determined that the problem occurs with the the stock 11.10 release kernel and does not actually relate to acpi_backlight=
I have been using Kamal Mostafa's kernels for my Dell Studio 15 for a few releases. Now, in oneiric, the brightness can not be changed unless I add acpi_backlight=
However, when I add this command line option, it introduces another issue where when the display goes to sleep, it does not resume.
Somtimes I get the screen back by switching to a console tty and then back to the X tty. But, the only reliable way I can get a screen to come back on is to close the laptop lid (so the system suspends) and then open it. The display will turn on for resume.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-
ProcVersionSign
Uname: Linux 3.0.0-12-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0a00000 irq 45'
Mixer name : 'Intel IbexPeak HDMI'
Components : 'HDA:111d7675,
Controls : 20
Simple ctrls : 11
Date: Tue Oct 11 22:09:44 2011
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
MachineType: Dell Inc. Studio 1558
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.60
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: Upgraded to oneiric on 2011-10-03 (8 days ago)
dmi.bios.date: 03/30/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0G939P
dmi.board.vendor: Dell Inc.
dmi.board.version: A12
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Studio 1558
dmi.product.
dmi.sys.vendor: Dell Inc.
Related branches
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
status: | Confirmed → Triaged |
tags: | removed: needs-upstream-testing |
Changed in linux (Ubuntu): | |
importance: | Undecided → High |
Changed in gnome-settings-daemon (Ubuntu): | |
status: | Triaged → In Progress |
description: | updated |
tags: | added: blocks-hwcert-enablement |
tags: | added: rls-mgr-p-tracking |
Changed in linux (Ubuntu): | |
status: | Fix Committed → Fix Released |
Changed in linux (Ubuntu): | |
assignee: | Kamal Mostafa (kamalmostafa) → nobody |
Would it be possible for you to test the latest upstream kernel? It will allow additional upstream developers to examine the issue. Refer to https:/ /wiki.ubuntu. com/KernelMainl ineBuilds . Please test the release candidate kernel versus the daily build. Once you've tested the upstream kernel, please remove the 'needs- upstream- testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs- upstream- testing' text. Please let us know your results.
Thanks in advance.