As adviced in the mailing list the following boot parameter works! acpi_osi=
I would like to reply to the person and thank him but I have no idea how, so if someone can tell me how to reply to those mailing lists please let me know. -- 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/1460088 Title: [Asus Zenbook Pro UX501JW] Backlight control via hotkeys does not work Status in linux package in Ubuntu: Triaged Bug description: When using the default open source drivers, backlight control does not work via keyboard hotkeys on Asus Zenbook Pro UX501JW. WORKAROUND: The backlight can be manually set while running on the integrated intel graphics (not with hotkeys). --- ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ubuntu 2154 F.... pulseaudio /dev/snd/controlC0: ubuntu 2154 F.... pulseaudio CasperVersion: 1.360 DistroRelease: Ubuntu 15.04 LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: ASUSTeK COMPUTER INC. N501JW Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/hostname.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper quiet splash --- ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-15-generic N/A linux-backports-modules-3.19.0-15-generic N/A linux-firmware 1.143 Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-15-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 01/14/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: N501JW.203 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: N501JW 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.:bvrN501JW.203:bd01/14/2015:svnASUSTeKCOMPUTERINC.:pnN501JW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN501JW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: N501JW 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/1460088/+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