My 4805 died a bit ago – threw a segment on the colorwheel, and that was it.
I found an IN72 on craigslist, and the price was right so I picked it up.
When I connected the DVI out on my mythtv box (aka the ‘kevo’), I got no love. No signal, nothing. This was strange since the 4805 worked fine, and they are basically the same.
I restarted xorg, and it came up ok, but it was at 720×480, not 848×480. I want to run native resolution if I can, so I spent the rest of the afternoon fighting with it.
After much troubleshooting the problems were:
the IN72 has a native resoltution of ~848×480, but it seems to report that it has a native resolution of 720×480 for some reason. Why they decided to do this, I have no idea.
Fortunately, the nvidia driver had an option to ignore the ‘native resolution’ setting.
I configured that, then found another problem. It couldn’t figure out the timing for the new mode for some reason. Internet to the rescue.
Here’s the nvidia config i ended up using:
Section "Device"
Identifier "nVidia Corporation NV34 [GeForce FX 5200]"
Driver "nvidia"
# some stuff omitted, not relevant
Option "ExactModeTimingsDVI" "true"
Option "ModeValidation" "NoDFPNativeResolutionCheck"
EndSection
And the modeline:
Section "Monitor"
Identifier "InFocus"
Modeline "848x480@60" 37.293 848 936 984 1104 480 508 509 563
EndSection
Some helpful commands:
## start Xwindows/xorg with verbose logging (logs to /var/log/Xorg.0.log):
startx -- -logverbose 6
Related error messages:
(WW) NVIDIA(0): Mode is rejected: Mode (848 x 480) is too large for DFP
(WW) NVIDIA(0): Native Resolution (Max: 720 x 480).
(WW) NVIDIA(0): Unable to use mode "848x480@60" for IFS InFocusIN72-D (DFP-0);
(WW) NVIDIA(0): cannot compute backend DFP timings (mode is larger than
(WW) NVIDIA(0): native backend 720 x 480).
