intel driver for 945GM multihead question

Dan Naughton daniel.naughton at gmail.com
Thu Dec 13 05:20:11 PST 2007


I can seem to find any documentation on this.  I've tried the dualhead
snippet on the intel website, but I keep getting TDMS-1 and TMDS-2
connecting to pipe A and the two displays cloned. The xrandr utility
wouldn't work with the Xinerama on in the xorg.conf, but when I shut it off
in the conf file, the xrandr utility doesn't seem to do much other than make
the two displays flicker when you hit enter.  My hardware spec says the
output of the 945GM looks like this:
     ___________
     |         |
     |  945GM  |
     |_________|
      | | | | |
  ____| | | | |___________
  |    _| | |___          |
  |   |   |     |         |
  |   |   |     |         |
 TV  VGA LVDS TDMS-1   TDMS-2
             (SDVO1?) (SDVO2?)

The VGA works fine during bootup and for the console.  I'm pretty sure I
need to assign TDMS-1 to Pipe A and TDMS-2 to Pipe B, but I can't find
anything in the documentation that seems to work.  For example:
*Option "MonitorLayout" "**anystr**"*Valid monitors are CRT, LFP, DFP, TV,
CRT2, LFP2, DFP2, TV2 does nothing:(  The  log file always shows the
following?

(II) intel(0): Output configuration:
(II) intel(0):   Pipe A is on
(II) intel(0):   Display plane A is now enabled and connected to pipe A.
(II) intel(0):   Pipe B is off
(II) intel(0):   Display plane B is now disabled and connected to pipe B.
(II) intel(0):   Output TMDS-1 is connected to pipe A
(II) intel(0):   Output TMDS-2 is connected to pipe A
(II) intel(0):   Output TV is connected to pipe none
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