Yes, I have found out already that in the mainline I have to check 3.8 as newest good and 3.8.1 as oldest bad kernel release. Currently I am doing a doing a GIT bisect between these two. According to the estimates by "git bisect" I am currently building for the third-last stage, finishing in 20 minutes from now (18:00 CEST), after that I have to do more two steps of 40 minutes build time each, arriving at the result at ~19:30 CEST.
Steps so far: 3.8: GOOD 3.8.1: BAD GIT 442b43c: BAD GIT 8ed82bb: GOOD GIT 97ec241: GOOD Using git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux- stable.git -- 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/1167301 Title: 8086:0166 [ThinkPad Twist S230u 3347] REGRESSION: Mirroring display works only with 1024x768 (4:3) whereas my laptop has 1366x768 (16:9) & external monitor 1920x1080 (16:9) Status in “linux” package in Ubuntu: Incomplete Status in “xorg-server” package in Ubuntu: Invalid Bug description: I have a Lenovo Thinkpad Twist with an internal 1366x768 (16:9) display and I have connected and external 1920x1080 (16:9) monitor via HDMI. By default the display gets mirrored with only 1024x768 (4:3) because this is the highest common resolution of the two reported by xrandr. I can switch to a large desktop formed by the two screens with the System Settings (section "Display") with each screen using its native resolution. This is a kernel regression from 3.8.0-7-generic to 3.8.0-19. I can mirror with a higher resolution running the commands: xrandr --addmode HDMI1 1366x768 xrandr --output HDMI1 --mode 1366x768 xrandr --output HDMI1 --mode 1366x768 --same-as LVDS1 This is rather awkward when using a projector. The problem also persists when connecting the external screen to the Mini DisplayPort (with adapter) instead of to the HDMI. I did not test with 12.10 by myself, but according to the comment from Gizmo Chicken below this worked correctly under 12.10, so this is a regression and not a feature request. The output of "xrandr --prop" with both screens connected in large- desktop-over-both-screens mode (no mirroring): Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 32767 x 32767 LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 277mm x 156mm EDID: 00ffffffffffff0030e47a0300000000 00160103801c10780adce5975a559227 1d505400000001010101010101010101 010101010101241d56d4500016303020 2500159c1000001b0000000000000000 00000000000000000000000000fe004c 4720446973706c61790a2020000000fe 004c503132355748322d534c54310025 BACKLIGHT: 1054 (0x0000041e) range: (0,1054) Backlight: 1054 (0x0000041e) range: (0,1054) scaling mode: Full aspect supported: None Full Center Full aspect 1366x768 59.8*+ 1360x768 59.8 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 connected 1920x1080+1366+0 (normal left inverted right x axis y axis) 510mm x 287mm EDID: 00ffffffffffff0015c3692001010101 2d14010380331d78eaee95a3544c9926 0f5054a1080081808140b30081c00101 010101010101023a801871382d40582c 4500fe1f1100001e000000ff00353732 32393131300a20202020000000fc0045 5632333333570a2020202020000000fd 003b3d1f440f000a2020202020200153 02031b41468102031112042309070783 01000067030c001300881e8c0ad08a20 e02d10103e96000403000000188c0ad0 8a20e02d10103e96001009000000188c 0ad090204031200c4055000403000000 188c0ad090204031200c405500100900 000018011d007251d01e206e28550010 090000001e000000000000000000005c Broadcast RGB: Automatic supported: Automatic Full Limited 16:2 audio: auto supported: force-dvi off auto on 1920x1080 60.0*+ 1680x1050 59.9 1280x1024 60.0 1280x960 60.0 1280x720 60.0 1024x768 60.0 800x600 60.3 720x576 50.0 720x480 59.9 640x480 60.0 59.9 720x400 70.1 DP1 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Automatic supported: Automatic Full Limited 16:2 audio: auto supported: force-dvi off auto on HDMI2 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Automatic supported: Automatic Full Limited 16:2 audio: auto supported: force-dvi off auto on DP2 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Automatic supported: Automatic Full Limited 16:2 audio: auto supported: force-dvi off auto on --- .tmp.unity.support.test.0: ApportVersion: 2.9.2-0ubuntu5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true DistUpgraded: Fresh install DistroCodename: raring DistroRelease: Ubuntu 13.04 DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:2205] InstallationDate: Installed on 2013-03-28 (12 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130328) MachineType: LENOVO 334729G MarkForUpload: True Package: xorg-server (not installed) ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-17-generic root=UUID=7229d092-c8f9-4b8a-bae8-529fc6a0340f ro elevator=deadline quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.8.0-17.27-generic 3.8.6 Tags: raring ubuntu compiz-0.9 Uname: Linux 3.8.0-17-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo dmi.bios.date: 02/05/2013 dmi.bios.vendor: LENOVO dmi.bios.version: GDET92WW (1.52 ) dmi.board.asset.tag: Not Available dmi.board.name: 334729G dmi.board.vendor: LENOVO dmi.board.version: Win8 Pro DPK 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:bvrGDET92WW(1.52):bd02/05/2013:svnLENOVO:pn334729G:pvrThinkPadTwist:rvnLENOVO:rn334729G:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 334729G dmi.product.version: ThinkPad Twist dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.9~daily13.04.05-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.43-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.3-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.3-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu5 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.5-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1 xserver.bootTime: Wed Apr 10 12:05:38 2013 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.13.3-0ubuntu5 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1167301/+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