narel, the next step is to fully commit bisect from your prior working kernel to 3.16 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ? Please note, finding adjacent kernel versions is not fully commit bisecting.
Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags removed: kernel-bug-exists-upstream-3.18.0-031800rc5 ** Tags added: kernel-bug-exists-upstream-3.18-rc5 ** Tags added: needs-bisect regression-release ** Changed in: linux (Ubuntu) Importance: Low => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1391153 Title: Thnikpad X220 - brightness control doesn't work Status in “linux” package in Ubuntu: Incomplete Bug description: After upgrading to Ubuntu 14.10 brightness control no longer works on Lenovo Thinkpad X220. Fn+Home/Fn+End doesn't work, the only way is to echo value to: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight/brightness I use Awesome WM, but it doesn't seem to be related to Awesome. --- ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: narel 3706 F...m pulseaudio /dev/snd/controlC0: narel 3706 F.... pulseaudio DistroRelease: Ubuntu 14.10 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=0f22933e-6234-43cf-8687-1245585a3025 InstallationDate: Installed on 2014-01-03 (318 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LENOVO 4290PB8 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-24-generic root=/dev/mapper/ubuntu--vg-root ro acpi_backlight=vendor quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 RelatedPackageVersions: linux-restricted-modules-3.16.0-24-generic N/A linux-backports-modules-3.16.0-24-generic N/A linux-firmware 1.138 Tags: utopic Uname: Linux 3.16.0-24-generic x86_64 UpgradeStatus: Upgraded to utopic on 2014-11-07 (10 days ago) UserGroups: adm audio cdrom dialout dip libvirtd lpadmin plugdev pulse pulse-access remote sambashare sudo _MarkForUpload: True dmi.bios.date: 07/19/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET63WW (1.33 ) dmi.board.asset.tag: Not Available dmi.board.name: 4290PB8 dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8DET63WW(1.33):bd07/19/2012:svnLENOVO:pn4290PB8:pvrThinkPadX220:rvnLENOVO:rn4290PB8:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4290PB8 dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1391153/+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