Ubuntu
linux package

Display blank when unpluged and Can't adjust brightness

Bug #1174624 reported by Watcharapol Tadtiang on 2013-04-30

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Opinion	Medium	Unassigned

Bug Description

Display blank when unpluged power .

Can't adjust brightness.
with kernel options "acpi_backlight=vendor"
after press hotkey , display blank .

without kernel options "acpi_backlight=vendor"
no effect after press hotkey

Notebook : Acer Tavermate 243-m
OS: Ubuntu 13.04
Kernel: Ubuntu 3.8.0-19.29-generic 3.8.8

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-19-generic 3.8.0-19.29
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ukokiku 2107 F.... pulseaudio
Date: Tue Apr 30 13:12:24 2013
HibernationDevice: RESUME=UUID=72e649a9-2068-490a-bef9-d6a4a6ac395e
InstallationDate: Installed on 2013-03-24 (36 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Acer TravelMate P243
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=1107618f-f929-4c38-a828-abeaef5a0119 ro acpi_osi=Linux reboot=bios acpi_backlight=vendor
RelatedPackageVersions:
linux-restricted-modules-3.8.0-19-generic N/A
linux-backports-modules-3.8.0-19-generic N/A
linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: Upgraded to raring on 2013-04-30 (0 days ago)
dmi.bios.date: 10/04/2012
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.10
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: BA40_HC
dmi.board.vendor: Acer
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.10:bd10/04/2012:svnAcer:pnTravelMateP243:pvrV1.10:rvnAcer:rnBA40_HC:rvrType2-BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: TravelMate P243
dmi.product.version: V1.10
dmi.sys.vendor: Acer

See original description

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Revision history for this message

Watcharapol Tadtiang (aborigines) wrote on 2013-04-30:

AlsaInfo.txt Edit (28.5 KiB, text/plain; charset="utf-8")
BootDmesg.txt Edit (51.0 KiB, text/plain; charset="utf-8")
CRDA.txt Edit (257 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (1.5 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (3.0 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (251 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (9.9 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (587 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.6 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.1 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.7 KiB, text/plain; charset="utf-8")
PulseList.txt Edit (16.6 KiB, text/plain; charset="utf-8")
RfKill.txt Edit (309 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (147.6 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (330.6 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (662.6 KiB, text/plain; charset="utf-8")

Watcharapol Tadtiang (aborigines) on 2013-04-30

description:

updated

Revision history for this message

Brad Figg (brad-figg) wrote on 2013-04-30: Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status:	New → Confirmed

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2013-04-30:

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.9 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-raring/