Well, I'm lost. It seems not related to linux-image, as the kernel image 3.5.0-17.28 (quantal release) does not work either. So it may come from another package update, acpi-support?
other notes: - sudo setpci -s 00:02.0 F4.B=HH with HH between 0 and ff works. - echo 258366 > /sys/class/backlight/intel_backlight/brightness works (values between 0 and 2583660) - /etc/acpi/asus-keyboard-backlight.sh looks for /sys/class/leds/asus\:\:kbd_backlight. I have no such entry (acpi-support_0.141). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1178796 Title: [Asus UL80VT] Backlight control does not work, but there are entries in /sys/class/backlight Status in “linux” package in Ubuntu: Incomplete Bug description: 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: - 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178796/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
