Monitor on DVI-I not detected

Matthias Hopf mhopf at
Fri Apr 13 02:30:23 PDT 2007

The current driver doesn't detect a CRT monitor that is attached to
DVI-I with a DVI-I to VGA adapter (Port1: Monitor -- NONE). That results
this monitor remaining black if something is connected to the secondary
output, or if MonitorLayout is set to AUTO,CRT.

The strange thing is - it does work with an LCD display, both with DVI-D
(Monitor -- TMDS) and with the DVI-I to VGA adapter (Monitor -- CRT).
In both cases a monitor is detected.  The used CRT is known to behave
well (Vision Master Pro 450), though it is pretty old.

The gfx card is a ATI FireGL V3100 (RV370) 5B64 (PCIE)

Is this a known common issue, or a new one? What can I do to actually
debug this? Increase some usleep() values in RADEONDisplayDDCConnected()?



Matthias Hopf <mhopf at>      __        __   __
Maxfeldstr. 5 / 90409 Nuernberg   (_   | |  (_   |__          mat at
Phone +49-911-74053-715           __)  |_|  __)  |__  R & D

More information about the xorg-driver-ati mailing list