[Intel-gfx] SDVO-VGA anybody?

[Aidan Dixon]

Hi Intel GFX and experts,

Anybody out there tried VGA over SDVO (a chrontel 7317A)?  We have this 
arrangement on of the boards we manufacture but we're getting no picture 
out of the monitor.  Bugzilla bug 15766 
(https://bugs.freedesktop.org/show_bug.cgi?id=15766) is logged against 
this.  We're using GM965 mobile embedded chipset but the board is not a 
lap-top and can support two DVI, two VGA or VGA+DVI (using various 
different build configurations).  We have a customer who needs 2xVGA and 
has an earlier solution with this capability.

Briefly:
PipeA -> VGA -> ViewSonic 1940w monitor  (picture is fine)
PipeB -> SDVO-B -> Chrontel 7317A -> Dell FP193c (no picture).
OS is Ubuntu 8.04 (i386) + X.org 1.4.0.99 and Intel driver 2.3.1 
(manually compiled).  Same results with other combinations including 
Ubuntu 7.10, Fedora Core 7, X.org v1.3.0.0 and Intel_drv.so v2.1.1 
through v2.2.1.

Interesting thing about the SDVO-VGA monitor situation is that VGA sync 
and colour signals from the monitor are consistent with the picture 
being sent (e.g. if I use xsetroot -solid); the monitor also things 
something is happening because the power LED goes from amber to green.   
Normally I'd think it'd left power saving mode but if I press the 
monitor menu button then the monitor pops up a message saying it IS in 
power saving mode and the LED then goes amber.  This happens if I swap 
the monitors around or use other ones - the result is always the same.

If I leave X for the text console then a picture does appear on the 
second monitor (a clone of the text mode image on the main VGA 
channel).  I return to X and the picture disappears (screen goes blank) 
but LED is green again.

I am running out of ideas on this, particularly since I am no expert on 
this kind of thing.  Can anyone suggest anything I can try.  I am able 
to compile and configure a working Intel driver.  Xorg.conf, Xorg.0.log 
files can be found in the bugzilla entry for this issue (see above).

Best regards,
-- 
Aidan Dixonemail: aidan.dixon at innocoregaming.com 
<mailto:aidan.dixon at innocoregaming.com>

web:   http://innocoregaming.com


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