[Bug 43858] DVI of ATI RADEON 9200 AGP don't work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43858

--- Comment #4 from Alex Deucher <agd5f at yahoo.com> 2012-01-10 13:53:35 PST ---
According to your xorg log, you are trying to drive two 1920x1080 monitors. 
That is a lot of bandwidth for an r2xx GPU to drive.  Try only attaching one
monitor.  I suspect the memory controller cannot keep up with the requests for
two large monitors and the 3D engine, and when you get underflow, you get the
blinking.  Does it work ok with only one monitor (xrandr --output VGA-0 --off)?
 How about a different mode?  Try 1024x768 or 1280x800, etc.  You can also try
a different modeline for 1920x1080.  try:
Modeline "1920x1080R"  138.50  1920 1968 2000 2080  1080 1083 1088 1111 +hsync
-vsync
for example.

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