ATI Fire GL V3100 and Dual display
wsb at paralleldata.com
Fri Jul 22 11:19:42 PDT 2005
Alex Deucher wrote:
>>After looking at the log closely, I realized that the radeon driver is switching around
>>what is the primary vs secondary "port". The Sceptre monitor is really the primary
>>display that the BIOS initializes and the Linux console runs on. The EN7100e is on the
>>DVI->VGA adapter and is not initialized at boot. So, this appears to be the problem.
>>How to tell the driver to swap them around?
> are you still having problems getting the screen to come up or are
> your heads just swapped? if it's just the heads that are swapped,
> switch the CRT2Position option to RightOf. If you are still having
> problems getting one of the displays to show an image add:
> Option "MonitorLayout" "CRT, CRT"
> to your device section. That will force both DACs on. You may also
> want to check your dvi-vga adapter. sometimes they can flake out.
The monitor on the DVI port is blank.
I tried the MonitorLayout option and it didn't seem to make a difference other than
the radeon driver complained the 2nd value was incorrect.
I'll try the RightOf setting this afternoon to see if that helps.
The DVI-VGA adpter was working last week on another system. I'll fire that system
up later today and make sure the DVI-VGA adapter is still working but I've seen
this behavior on multiple system combinations, with multiple DVI-VGA adapters.
Just to clarify, you say this "forces" both DAC's on. Does that also mean the driver
will do a soft reset using the "int10" module on both ports? I still think the driver
is confused which port is primary vs secondary. Think I need to go look at the driver
source to see what ports are reset and under what conditions.
>>Any help appreciated.
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