Ubuntu
gnome-power-manager package

Screen brighness randomly changes on Lenovo Y560 laptop

Bug #789346 reported by nbadal on 2011-05-27

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	gnome-power-manager (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

My installation of Ubuntu 11.04 randomly changes screen brightness without input from the user. The time between brightness changes can be from hours to seconds.
Changing the brightness back manually temporarily fixes this until it changes again.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Fri May 27 14:14:12 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: fglrx, 8.840, 2.6.38-8-generic, x86_64: installed
EcryptfsInUse: Yes
GraphicsCard:
ATI Technologies Inc Madison [Mobility Radeon HD 5000 Series] [1002:68c0] (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:3927]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
JockeyStatus: xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
Lsusb:
Bus 002 Device 003: ID 064e:f207 Suyin Corp.
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO IdeaPad Y560
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=eae539fd-b776-4fb8-8c49-f6d0d205c3f3 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/23/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 30CN62WW
dmi.board.name: KL3
dmi.board.vendor: Lenovo
dmi.board.version: Rev 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Lenovo
dmi.chassis.version: Rev 1.0
dmi.modalias: dmi:bvnLENOVO:bvr30CN62WW:bd07/23/2010:svnLENOVO:pnIdeaPadY560:pvrRev1.0:rvnLenovo:rnKL3:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
dmi.product.name: IdeaPad Y560
dmi.product.version: Rev 1.0
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

Tags:

Revision history for this message

nbadal (badalnick) wrote on 2011-05-27:

BootDmesg.txt Edit (63.1 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (7.5 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (5.6 KiB, text/plain; charset="utf-8")
GconfCompiz.txt Edit (36.5 KiB, text/plain; charset="utf-8")
GlConf.txt Edit (1.5 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (23.4 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (6.4 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (3.7 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.8 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (135.3 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (306.2 KiB, text/plain; charset="utf-8")
UnitySupportTest.txt Edit (614 bytes, text/plain; charset="utf-8")
XorgConf.txt Edit (114 bytes, text/plain; charset="utf-8")
XorgLog.txt Edit (50.9 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (52.8 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (3.0 KiB, text/plain; charset="utf-8")
locale.txt Edit (335 bytes, text/plain; charset="utf-8")
peripherals.txt Edit (1.5 KiB, text/plain; charset="utf-8")
setxkbmap.txt Edit (233 bytes, text/plain; charset="utf-8")
xdpyinfo.txt Edit (21.4 KiB, text/plain; charset="utf-8")
xinput.txt Edit (990 bytes, text/plain; charset="utf-8")
xkbcomp.txt Edit (54.8 KiB, text/plain; charset="utf-8")

Revision history for this message

Shimi Chen (shimi-chen) wrote on 2011-06-08:

Does it always change to being darker or could also become brighter?

Does it always change to a a specific brightness level?

affects:

ubuntu → gnome-power-manager (Ubuntu)

Revision history for this message

Dave (avetti) wrote on 2011-07-11:

i also have this issue.

i normally keep my brightness on full.

so then it always gets darker when this occurs.

it seems to go to 70% brightness. i quickly put it back to 100% so i dont know if it would continue to darken

Revision history for this message

Emystein (emystein) wrote on 2011-10-08:

I have a Lenovo Ideapad Y560 with an ATI Mobility Radeon HD 5730, and had the same problem.

I have upgraded the BIOS to version 71 and the problem seems to be solved. I have downloaded the BIOS from the Lenovo driver download page specific to the Ideapad Y560 http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers_list.aspx?CategoryID=661448

To avoid downloading a wrong BIOS, I recommend checking your laptop model going to http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers.html and filling the form with your laptop serial number.

My specifications:

Computer: Lenovo Ideapad Y560
Processor: Intel Core i5 M560 @ 2.67GHz
Graphics: ATI Mobility Radeon HD 5730

OS: Ubuntu 11.04
Video Drivers: ATI Propietary FLGRX Driver downloaded and installed via the Additional Drivers applet.

Also posted at: http://ubuntuforums.org/showthread.php?t=1768072

Regards,

Revision history for this message

Launchpad Janitor (janitor) wrote on 2011-10-08:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in gnome-power-manager (Ubuntu):
status:	New → Confirmed

Revision history for this message

nbadal (badalnick) wrote on 2011-10-10:

Mine always darkens, and it sometimes goes to ~%70, but other times it seems to go all the way down.

Also, I've updated the BIOS and graphics drivers and the problem still occurs.

Revision history for this message

nbadal (badalnick) wrote on 2012-05-04:

This same problem still exists in 12.04.

Report a bug

This report contains Public information

Everyone can see this information.

You are

Subscribing...

Edit bug mail

Other bug subscribers

Bug attachments

Add attachment

Remote bug watches

Bug watches keep track of this bug in other bug trackers.

Ubuntugnome-power-manager package

Screen brighness randomly changes on Lenovo Y560 laptop

Bug Description

Other bug subscribers

Bug attachments

Remote bug watches

Ubuntu
gnome-power-manager package