XPS 13 LCD backlight control does not work after suspend / resume
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Incomplete
|
Medium
|
Unassigned |
Bug Description
This is with a Dell XPS 13, running up to date Raring. After suspend / resume, I am unable to adjust screen brightness. As in bug #1055231, functionality is restored after I run /bin/echo 0 > /sys/class/
This appears to be a recent regression in Raring, though I could be imagining that it worked before. It would have only been fixed this cycle, at any rate. For Quantal, the kernel provided by ~canonical-hwe-team includes working backlight control.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.8.0-13-generic x86_64
ApportVersion: 2.9.2-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Date: Wed Mar 20 18:28:41 2013
EcryptfsInUse: Yes
HibernationDevice: RESUME=
InstallationDate: Installed on 2012-06-21 (272 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: Dell Inc. Dell System XPS L321X
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.104
SourcePackage: linux
UpgradeStatus: Upgraded to raring on 2013-03-14 (6 days ago)
dmi.bios.date: 04/09/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.name: 085X6F
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Dell System XPS L321X
dmi.sys.vendor: Dell Inc.
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