--- acpi_osi removed from kernel parameters in grub --- Hotkeys still not working, brightness applet working.
By https://wiki.ubuntu.com/Kernel/Debugging/Backlight I am in the following situation: "Backlight control works through the brightness applet but not via hotkeys." Thereafter following the link on debugging hotkeys https://wiki.ubuntu.com/Hotkeys/Troubleshooting Results from step-by-step troubleshooting: - Nothing registered with xev when pressing fn+f5/f6 (backlight down/up) - Nothing registered with evtest when pressing fn+f5/f6 - Nothing registered with acpi_listen when pressing fn+f5/f6 (other fn-key functions such as turning off the touchpad are registered) Also, please find the files produced by commands under "Useful Information to Collect in Reports" attached. --- WORKAROUND in https://wiki.ubuntu.com/Kernel/Debugging/Backlight --- Booting with only acpi_backlight=vendor, adjusting the brightness through the applet stops working as well. The brightness changes when executing "echo 8 > /sys/class/backlight/intel_backlight/brightness". Booting with only video.use_bios_initial_backlight=0, brightness applet works, but not the brightness hotkeys. Booting with only acpi_osi=, neither applet nor hotkeys work. Booting with only video.use_native_backlight=1, applet works but not hotkeys. Also, please find vendorbacklight and lslabacklight files attached. --- Kernel v4.5-rc4-wily --- Problem still exists -- 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/1492137 Title: Brightness keys (fn+f5/f6) not working, UX305FA Status in linux package in Ubuntu: Confirmed Bug description: Brightness keys does not change screen brightness. Manually editing the brightness in system settings does work however. Using xev, neither of the brightness function keys are detected. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8.1 ProcVersionSignature: Ubuntu 3.19.0-26.28~14.04.1-generic 3.19.8-ckt4 Uname: Linux 3.19.0-26-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.1-0ubuntu3.12 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Fri Sep 4 08:59:14 2015 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Broadwell-U Integrated Graphics [8086:161e] (rev 08) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:181d] InstallationDate: Installed on 2015-09-02 (1 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 064e:9700 Suyin Corp. Bus 001 Device 002: ID 8087:0a2a Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. UX305FA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-26-generic.efi.signed root=UUID=dc0d1e93-b3f9-4b94-9fd9-4c91317f91f7 ro quiet splash acpi_osi=Linux vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/19/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX305FA.210 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX305FA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX305FA.210:bd05/19/2015:svnASUSTeKCOMPUTERINC.:pnUX305FA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX305FA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: UX305FA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri N/A version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Fri Sep 4 08:03:23 2015 xserver.configfile: /etc/X11/xorg.conf xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.17.1-0ubuntu3~trusty1 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1492137/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
