Will do, but i guess not before the weekend. Tonight i've did some easy debugging by just installing some old version (3.14-3.16) of the mainline kernel. It showed, that the actual bug (not being able to adjust the brightness level after undocking) is fixed in those versions as well, but there is some other strange stuff going on. After every undocking the screen is just black. I first thought the OS/windows manger/... crashed, but after some testing it showed, that the brightness level was just set to the lowest possible value which just meant that the display is black/dark. So with 3.14-3.16 the actual bug is fixed but there is some really non-user-friendly behavior with just a black/dark screen. So i guess i should first bisect 3.13 against 3.14 to find the actual bug(fix)? And after that bisect 3.14 against 3.17 to find the bugfix for the black/dark screen behavior. Right?
-- 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/1378418 Title: [Lenovo ThinkPad T430s] Brightness bug in kernel 3.13 when using Docking station Status in “linux” package in Ubuntu: Incomplete Bug description: When undocking my Thinkpad T30s from my dockingstation, the brightness is set to the lowest level and can't be changed. Workaround: - Dock/Undock again. After the second undocking the brightness level can be changed. Rule of thumb: Every uneven undocking won't work. - Reboot ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-36-generic 3.13.0-36.63 ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6 Uname: Linux 3.13.0-36-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: s0me0ne 3001 F.... pulseaudio Date: Tue Oct 7 17:35:56 2014 HibernationDevice: RESUME=UUID=af9ba4ae-e55a-4140-ada0-b0fe89caa5ff InstallationDate: Installed on 2014-09-21 (16 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: LENOVO 2356LNG ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-36-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 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-3.13.0-36-generic N/A linux-backports-modules-3.13.0-36-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/14/2014 dmi.bios.vendor: LENOVO dmi.bios.version: G7ETA0WW (2.60 ) dmi.board.asset.tag: Not Available dmi.board.name: 2356LNG dmi.board.vendor: LENOVO dmi.board.version: Win8 Pro MBR TPG dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG7ETA0WW(2.60):bd05/14/2014:svnLENOVO:pn2356LNG:pvrThinkPadT430s:rvnLENOVO:rn2356LNG:rvrWin8ProMBRTPG:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2356LNG dmi.product.version: ThinkPad T430s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1378418/+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
