thinkpad screen dims after unplugging external display, and won't re-brighten without leaving X
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
Medium
|
Unassigned |
Bug Description
When I un-plug the external VGA cable from my Thinkpad X200s, the screen dims. Hitting Fn-Home (the brightness-increase key) does nothing. Suspending and resuming doesn't reset this, though a reboot will allow me to use the brightness controls again while in the POST and after.
My current workaround is that every time I disconnect the monitor, I have to C-M-F1 to get to a virtual console, brighten the screen, and then M-left to get back to X.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: compiz 1:0.9.11+
ProcVersionSign
Uname: Linux 3.13.0-17-generic x86_64
.tmp.unity.
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,
CompositorRunning: compiz
CompositorUnred
CompositorUnred
CurrentDesktop: Unity
Date: Wed Mar 12 13:22:01 2014
DistUpgraded: 2014-02-25 19:06:30,487 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
EcryptfsInUse: Yes
GraphicsCard:
Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:20e4]
Subsystem: Lenovo Device [17aa:20e4]
MachineType: LENOVO 7465CTO
PackageArchitec
ProcKernelCmdLine: root=UUID=
SourcePackage: compiz
UpgradeStatus: Upgraded to trusty on 2014-02-25 (14 days ago)
dmi.bios.date: 06/25/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 6DET55WW (3.05 )
dmi.board.name: 7465CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 7465CTO
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.11+
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Wed Mar 12 09:07:01 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 16404
vendor LEN
xserver.version: 2:1.15.0-1ubuntu6
description: | updated |
This sounds more like a kernel issue (ACPI maybe?) as Compiz has nothing to do with screen brightness and screen brightness hot keys.