The issue still exists in 16.10. Fresh install, made just a few hours ago. The workarounds don't even make the brightness keys work. The system shows the brightness popup, which responds to the brightness keys, but the actual brightness doesn't change.
Changing brightness by piping a number into /sys/class/backlight/intel_backlight/brightness still works though, but it'd be really nice to get the actual keys working. -- 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/1329510 Title: [Asus X200M] Changing Backlight not working Status in linux package in Ubuntu: Expired Bug description: Backlight setting is not working with Lubuntu 14.04. This bug is reported following https://wiki.ubuntu.com/Kernel/Debugging/Backlight#Debugging_information_to_provide_in_your_bug_report guidelines. WORKAROUND: Backlight can be set with xbacklight after creating /usr/share/X11/xorg.conf.d/20-intel.conf : Section "Device" Identifier "card0" Driver "intel" Option "Backlight" "intel_backlight" BusID "PCI:0:2:0" EndSection but special keys are not working, and there are no events in acpi_listen when pressing these keys. Update : To get special keys working (from : http://sajan.io/blog/asus-x200m-perfect-linux-ubuntu-xubunu-utility-laptop) In the file /etc/default/grub, you'll see a line that looks like this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" All you want to do is add two parameters to that line to make it look like this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_os_name=Linux acpi_osi=" That's it. Save the file and run sudo update-grub in a terminal. Reboot, and your brightness keys should start working perfectly. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-29-generic 3.13.0-29.53 ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2 Uname: Linux 3.13.0-29-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: guillaume 1447 F.... lxpanel CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type: 'iw' CurrentDesktop: LXDE Date: Thu Jun 12 21:52:16 2014 HibernationDevice: RESUME=UUID=5b0a59aa-0acf-415f-93bd-62df1b558efb InstallationDate: Installed on 2014-06-12 (0 days ago) InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 001 Device 002: ID 0bda:5603 Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. X200MA ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=37551324-2550-4e13-aea9-4603fbd63807 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-29-generic N/A linux-backports-modules-3.13.0-29-generic N/A linux-firmware 1.127 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/21/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X200MA.302 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X200MA 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.:bvrX200MA.302:bd01/21/2014:svnASUSTeKCOMPUTERINC.:pnX200MA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX200MA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: X200MA 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/1329510/+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
