Hello to everyone
Thank you very much for your replies!
OK, I booted the machine into single user mode and:
The graphics adapter is an ATI Rage 128. As far as I can tell, it is
properly recognised. (The machine is an iMac G3 @400MHz slot loader by the way)
2) Sorry, I am not using Debian testing.
3) The HorizSync, VertRefresh business did not help at all
5) When I set the ModeLines for the resolutions it dies for good. I can't even get back to the command line. Upon restart the log file is full of messages from the driver that it waits for [something something] to go into idle mode.
6) Tried the VESA driver....no
This is likely just a monitor / graphics adapter issue. This +hsync +vsync business brought back memories....Not good ones.
Is there a lookup table indexed by the monitor type for these parameters by now?
Looking forward to hearing from you