just a small fix to the description. All log files so far are from failed 
attempts with the ext. monitor connected.
This one here is without the ext. monitor.

** Attachment added: "Xorg.0.log"
   http://launchpadlibrarian.net/17039647/Xorg.0.log

** Description changed:

  Binary package hint: xorg
  
  Using a fresh daily build of Intrepid (tried both the live cd and an
  installation made with the alternate cd):
  
  Xorg fails when an external monitor is connected to my laptop (Dell
  Inspiron 6400, ATI X1400 graphics card) through a KVM switch. After a
  scrambled splash screen, the screen goes black.
  
  The problem does not to occur when the monitor is unplugged or connected
  to the laptop directly (instead of through the switch). It also works
  fine in Hardy.
  
  In case it is relevant, this is the KVM switch: 
http://www.equip-info.net/english/index.php?main=10&gruppe=300&prod=2188
  The monitor is a Samsung SyncMaster 930BF.
  
  Excerpt from lspci:
  
  01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon
  Mobility X1400 [1002:7145]
  
  Excerpt from discover:
  
  ATI Technologies Inc Radeon Mobility X1400
  
  Logfiles:
  
- xorg.0.log with ext-Monitor: 
http://launchpadlibrarian.net/16776938/Xorg.10.log
- xorg.0.log without Monitor: http://launchpadlibrarian.net/16776933/Xorg.0.log
+ xorg.0.log with ext-Monitor: 
http://launchpadlibrarian.net/16776933/Xorg.0.log and 
http://launchpadlibrarian.net/16776938/Xorg.10.log
  xorg.0.log with autoconfig: http://launchpadlibrarian.net/17034798/Xorg.0.log
+ xorg.0.log without Monitor: http://launchpadlibrarian.net/17039647/Xorg.0.log

-- 
[radeon] xorg gives black screen with external monitor connected through 
KVM-switch
https://bugs.launchpad.net/bugs/257941
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