Test with acpi_backlight=vendor:
- on 3.8.0-20.31-generic, no change. But echo 8 > /sys/class/backlight/intel_backlight/brightness makes the screen dark, moreover /sys/class/backlight/intel_backlight/max_brightness = 2583660
- on 3.9.1, no brightness change but the KDE notification pops up with only 3 levels (0, 53, 100%)
Test with video.use_bios_initial_backlight=0:
- on 3.8.0-20.31-generic, no change.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-20-generic 3.8.0-20.31
ProcVersionSignature: Ubuntu 3.8.0-20.31-generic 3.8.11
Uname: Linux 3.8.0-20-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: guillaume 2490 F.... pulseaudio
/dev/snd/controlC0: guillaume 2490 F.... pulseaudio
Date: Fri May 10 12:14:58 2013
HibernationDevice: RESUME=/dev/sda6
InstallationDate: Installed on 2010-01-19 (1207 days ago)
InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: ASUSTeK Computer Inc. UL80VT
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-20-generic root=UUID=d92f3a31-9e9c-4c19-98be-6fbc82629a36 ro video.use_bios_initial_backlight=0 quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-20-generic N/A
linux-backports-modules-3.8.0-20-generic N/A
linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: Upgraded to raring on 2013-04-27 (12 days ago)
dmi.bios.date: 01/17/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 214
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UL80VT
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr214:bd01/17/2011:svnASUSTeKComputerInc.:pnUL80VT:pvr1.0:rvnASUSTeKComputerInc.:rnUL80VT:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: UL80VT
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
Not working since the upgrade to Raring. Used to work on 12.10.
Not working neither with linux-image- 3.9.1-030901- generic_ 3.9.1-030901. 201305080210 from http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.9.1- saucy/
Hotkeys are detected, showkey -s:
Fn+F5:
0xe0 0x4c 0xe0 0xcc
Fn+F6:
0xe0 0x54 0xe0 0xd4
I also attach the results from tests described on https:/ /wiki.ubuntu. com/Kernel/ Debugging/ Backlight.
Test with acpi_backlight= vendor: 31-generic, no change. But echo 8 > /sys/class/ backlight/ intel_backlight /brightness makes the screen dark, moreover /sys/class/ backlight/ intel_backlight /max_brightness = 2583660
- on 3.8.0-20.
- on 3.9.1, no brightness change but the KDE notification pops up with only 3 levels (0, 53, 100%)
Test with video.use_ bios_initial_ backlight= 0: 31-generic, no change.
- on 3.8.0-20.
ProblemType: Bug 3.8.0-20- generic 3.8.0-20.31 ature: Ubuntu 3.8.0-20.31-generic 3.8.11 controlC1: guillaume 2490 F.... pulseaudio controlC0: guillaume 2490 F.... pulseaudio /boot/vmlinuz- 3.8.0-20- generic root=UUID= d92f3a31- 9e9c-4c19- 98be-6fbc82629a 36 ro video.use_ bios_initial_ backlight= 0 quiet splash vt.handoff=7 ersions: restricted- modules- 3.8.0-20- generic N/A backports- modules- 3.8.0-20- generic N/A asset.tag: ATN123456789012 34567 asset.tag: ATN123456789012 34567 version: 1.0 MegatrendsInc. :bvr214: bd01/17/ 2011:svnASUSTeK ComputerInc. :pnUL80VT: pvr1.0: rvnASUSTeKCompu terInc. :rnUL80VT: rvr1.0: cvnASUSTeKCompu terInc. :ct10:cvr1. 0: version: 1.0
DistroRelease: Ubuntu 13.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.8.0-20-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
Date: Fri May 10 12:14:58 2013
HibernationDevice: RESUME=/dev/sda6
InstallationDate: Installed on 2010-01-19 (1207 days ago)
InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: ASUSTeK Computer Inc. UL80VT
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: Upgraded to raring on 2013-04-27 (12 days ago)
dmi.bios.date: 01/17/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 214
dmi.board.
dmi.board.name: UL80VT
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: UL80VT
dmi.product.
dmi.sys.vendor: ASUSTeK Computer Inc.