** Summary changed:

- External monitor loss - intel 945
+ External screen blanks black/gray/white unless Framebuffer Compression is 
turned off

** Description changed:

  Binary package hint: xserver-xorg-video-intel
  
  I use my laptop (1st gen Macbbok) with external monitor. The display is
  a HP w2207h, and the resolution is 1680x1050.
  
  I can change the resolution without problem. Then the monitor is slip
  away few hours later. I try restart the X server, but on the monitor I
  doesn't see anything. So I get a black display on HP's screen, and on
  the Macbook's monitor I see the GDM.
  
  I can't find anything in the logs, everything looks good.
  
  cat /etc/lsb-release
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=8.04
  DISTRIB_CODENAME=hardy
  DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"
  
  % dpkg -l xserver-xorg-video-intel | cat
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
  |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: 
uppercase=bad)
  ||/ Name                                       Version                        
Description
  
+++-==========================================-==============================-=================================================
  ii  xserver-xorg-video-intel                   2:2.2.0.90-2ubuntu2            
X.Org X server -- Intel i8xx, i9xx display driver
+ 
+ [Workaround]
+ Edit your xorg.conf to include the following Option in the Device Section of 
“Configured Video Device”:
+ 
+ Section "Device"
+ Identifier      "Configured Video Device"
+ Option          “FramebufferCompression” “off”
+ EndSection

-- 
External screen blanks black/gray/white unless Framebuffer Compression is 
turned off
https://bugs.launchpad.net/bugs/193419
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