[Trac #263] X doesn't use DCON mode

Zarro Boogs per Child bugtracker at laptop.org
Tue Nov 7 16:27:53 EST 2006


#263: X doesn't use DCON mode
---------------------+------------------------------------------------------
 Reporter:  dwmw2    |        Owner:  blizzard
     Type:  defect   |       Status:  new     
 Priority:  blocker  |    Milestone:  BTest-1 
Component:  distro   |   Resolution:          
 Keywords:           |  
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Comment (by blizzard):

 Talking to Jordan.   Few issues here:

 o This only can tell if the DCON is there, not if we want to use the panel
 mode.  Because you can use a CRT with DCON attached and you want a sane
 mode there.  Suggestion is to use the above technique along with a kernel
 command line "usecrt" which the script which does the check can look for
 if someone wants to hook a crt up to a b-test board.

 o Jordan has some ideas about doing this through the VSA and the amd
 driver which he can explain.

 o We could read NVRAM from inside the X driver

 o We could just read the drivers from the script, but this is
 inconsistent.

 o Mitch should probably set the mode in the BIOS, based on the following
 test in any case:

 if (jumper == flat panel && dcon is on the smbus)
     1200x900
 else
     1024x768

-- 
Ticket URL: <http://dev.laptop.org/ticket/263#comment:5>
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