Public bug reported:

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.

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

** Affects: xorg-server (Ubuntu)
     Importance: High
         Status: New


** Tags: apport-collected compiz-0.9 raring ubuntu

** Changed in: xorg-server (Ubuntu)
   Importance: Undecided => High

** Changed in: xorg-server (Ubuntu)
    Milestone: None => ubuntu-13.04

** Tags added: apport-collected compiz-0.9 raring ubuntu

** Description changed:

  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.
  
  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

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1167301

Title:
  Mirroring display works only with 1024x768 (4:3) resolution whereas my
  laptop has 1366x768 (16:9) and the external monitor1920x1080 (16:9)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1167301/+subscriptions

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