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I just installed an 22'' wide Samsung monitor, and it looks very strange - it the right 20% of the display are wrapped to the left side of the monitor!

This is my system according to uname -a:

Linux ubuntu 2.6.32-34-generic #77-Ubuntu SMP Tue Sep 13 19:39:17 UTC 2011 x86_64 GNU/Linux

This is my .config/monitors.xml:

<monitors version="1">
  <configuration>
      <clone>no</clone>
      <output name="default">
          <vendor>???</vendor>
          <product>0x0000</product>
          <serial>0x00000000</serial>
          <width>1600</width>
          <height>900</height>
          <rate>0</rate>
          <x>0</x>
          <y>0</y>
          <rotation>normal</rotation>
          <reflect_x>no</reflect_x>
          <reflect_y>no</reflect_y>
          <primary>no</primary>
      </output>
  </configuration>
</monitors>

These are the files in my /etc/X11:

drwxr-xr-x  10 root root  4096 2011-08-18 22:35 .
drwxr-xr-x 144 root root 12288 2012-01-15 15:48 ..
drwxr-xr-x   2 root root  4096 2011-11-17 09:09 app-defaults
drwxr-xr-x   2 root root  4096 2011-07-19 15:21 cursors
-rw-r--r--   1 root root    14 2011-08-18 22:35 default-display-manager
drwxr-xr-x   6 root root  4096 2011-07-19 15:17 fonts
-rw-r--r--   1 root root 17394 2011-08-18 22:35 rgb.txt
lrwxrwxrwx   1 root root    13 2011-08-18 22:35 X -> /usr/bin/Xorg
drwxr-xr-x   3 root root  4096 2011-07-19 15:21 xinit
drwxr-xr-x   2 root root  4096 2010-04-15 15:12 xkb
-rw-r--r--   1 root root   270 2011-08-18 22:35 xorg.conf.failsafe
-rwxr-xr-x   1 root root   709 2011-08-18 22:35 Xreset
drwxr-xr-x   2 root root  4096 2011-07-19 15:08 Xreset.d
drwxr-xr-x   2 root root  4096 2011-07-19 15:08 Xresources
-rwxr-xr-x   1 root root  3730 2011-08-18 22:35 Xsession
drwxr-xr-x   2 root root  4096 2011-08-23 18:08 Xsession.d
-rw-r--r--   1 root root   265 2011-08-18 22:35 Xsession.options
-rw-------   1 root root   601 2011-08-18 22:35 Xwrapper.config

This is my xorg.conf.failsafe:

Section "Device"
    Identifier  "Configured Video Device"
    Driver      "fbdev"
EndSection

Section "Monitor"
    Identifier  "Configured Monitor"
EndSection

Section "Screen"
    Identifier  "Default Screen"
    Monitor     "Configured Monitor"
    Device      "Configured Video Device"
EndSection

These are the resolutions available on my system (according to xrandr):

Screen 0: minimum 640 x 480, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0mm
   1024x768        0.0* 
   800x600         0.0  
   640x480         0.0  

Here is what I get from read-edid:

erelsgl@ubuntu:~$ sudo get-edid | parse-edid
parse-edid: parse-edid version 2.0.0
get-edid: get-edid version 2.0.0

    Performing real mode VBE call
    Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
    Function supported
    Call successful

    VBE version 300
    VBE string at 0x11100 "Intel(R)Sandybridge Desktop Graphics Chipset Accelerated VGA BIOS"

VBE/DDC service about to be called
    Report DDC capabilities

    Performing real mode VBE call
    Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
    Function supported
    Call successful

    Monitor and video card combination does not support DDC1 transfers
    Monitor and video card combination supports DDC2 transfers
    0 seconds per 128 byte EDID block transfer
    Screen is not blanked during DDC transfer

Reading next EDID block

VBE/DDC service about to be called
    Read EDID

    Performing real mode VBE call
    Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
    Function supported
    Call successful

parse-edid: EDID checksum passed.

    # EDID version 1 revision 3
Section "Monitor"
    # Block type: 2:0 3:fd
    # Block type: 2:0 3:fc
    Identifier "SyncMaster"
    VendorName "SAM"
    ModelName "SyncMaster"
    # Block type: 2:0 3:fd
    HorizSync 30-81
    VertRefresh 56-75
    # Max dot clock (video bandwidth) 150 MHz
    # Block type: 2:0 3:fc
    # Block type: 2:0 3:ff
    # DPMS capabilities: Active off:yes  Suspend:no  Standby:no

    Mode    "1600x900"  # vfreq 60.000Hz, hfreq 60.000kHz
        DotClock    108.000000
        HTimings    1600 1624 1704 1800
        VTimings    900 901 904 1000
        Flags   "+HSync" "+VSync"
    EndMode
    # Block type: 2:0 3:fd
    # Block type: 2:0 3:fc
    # Block type: 2:0 3:ff
EndSection

My display card is:

erelsgl@ubuntu:~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09)

Thank you in advance!

share|improve this question
    
Post the output from lspci | grep VGA to find out what card you have. –  pablomme Jan 15 '12 at 14:09
    
Thank you! My card is: "VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09)" –  Erel Segal Halevi Jan 15 '12 at 14:33
    
Ok. From your kernel version I assume you are running Lucid Lynx. I believe a capable display set-up tool was included there already, and it should live under System > Preferences > Display. Have you tried using that to configure your resolution? –  pablomme Jan 15 '12 at 14:48
    
Yes, the maximum resolution it shows is 1024x768 –  Erel Segal Halevi Jan 15 '12 at 14:57
    
I believe your problem may have to do with lack of Sandy Bridge support in 10.04. I would suggest trying out 11.10 on a memory stick or CD/DVD to see if it handles your display correctly. –  pablomme Jan 15 '12 at 16:40
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1 Answer 1

up vote 1 down vote accepted

Solved by installing both of these:

http://intellinuxgraphics.org/2011Q1.html

http://ubuntuforums.org/showpost.php?p=11223913&postcount=16

I don't know which of them actually solved the problem - just installed both, rebooted, and it worked.

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