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[Till Kamppeter <1167301@xxxxxxxxxxxxxxxxxx>]

I have tried a Quantal live CD now and there the bug does not show. The
external monitor mirrors the image of the internal monitor in exactly
the same resolution as the internal monitor, 1366x768.

I have also run "xrandr" and the external monitor reports back many more
modes than under Raring or Saucy:

Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 277mm x 156mm
   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 1366x768+0+0 (normal left inverted right x axis y axis) 510mm x 287mm
   1920x1080      60.0 +
   1680x1050      59.9  
   1680x945       60.0  
   1400x1050      59.9  
   1600x900       60.0  
   1280x1024      60.0  
   1440x900       59.9  
   1280x960       60.0  
   1366x768       60.0* 
   1360x768       60.0  
   1280x800       59.9  
   1280x768       60.0  
   1280x720       60.0  
   1024x768       60.0  
   1024x576       60.0  
   800x600        60.3  
   848x480        60.0  
   640x480        60.0  
   720x400        70.1  
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)

The problem seems that under Raring and Saucy the  displays do not
report back all their modes.


** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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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:
  Confirmed
Status in “xorg-server” package in Ubuntu:
  Triaged

Bug description:
  I have a Lenovo Thinkpad Twist with Core i7 processor and on-chip
  HD4000 GPU. It has 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.

  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

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