** Description changed: - 4k support of my Lenovo X250 with and without docking station does not work. - Ubuntu offers 4k resolution but my display keeps black. + Attempting to use Lenovo X250's mini-DisplayPort, connected to Dell P2415Q's DisplayPort with Dell provided mDP-2-DP cable on below resolutions results in a black screen on the external monitor: + 3840 x 2160 px + 2560 x 1440 px - I can reproduce this bug with Dell P2415Q and Dell P2715Q connected via Mini DisplayPort and DisplayPort (Dock). - The most recent 16.04 build fails the same way. - - Thanks! + The largest working resolution is 1920 x 1200 px. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 .tmp.unity.support.test.0: - + ApportVersion: 2.19.1-0ubuntu3 Architecture: amd64 BootLog: - Generating locales... - en_US.UTF-8... done - Generation complete. - pwconv: failed to change the mode of /etc/passwd- to 0600 + Generating locales... + en_US.UTF-8... done + Generation complete. + pwconv: failed to change the mode of /etc/passwd- to 0600 CasperVersion: 1.365 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: Thu Feb 18 14:36:58 2016 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: - Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller]) - Subsystem: Lenovo Device [17aa:2226] + Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller]) + Subsystem: Lenovo Device [17aa:2226] LiveMediaBuild: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: LENOVO 20CM001RGE ProcEnviron: - TERM=xterm-256color - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash --- SourcePackage: xorg UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/19/2016 dmi.bios.vendor: LENOVO dmi.bios.version: N10ET41W (1.20 ) dmi.board.asset.tag: Not Available dmi.board.name: 20CM001RGE dmi.board.vendor: LENOVO dmi.board.version: SDK0E50510 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN10ET41W(1.20):bd01/19/2016:svnLENOVO:pn20CM001RGE:pvrThinkPadX250:rvnLENOVO:rn20CM001RGE:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20CM001RGE dmi.product.version: ThinkPad X250 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Thu Feb 18 14:34:17 2016 xserver.configfile: default xserver.errors: - + xserver.logfile: /var/log/Xorg.0.log xserver.outputs: - product id 1079 - vendor LGD + product id 1079 + vendor LGD xserver.version: 2:1.17.2-1ubuntu9
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1547043 Title: 4k Support not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1547043/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
