On Thu, 28 May 2009 16:50:52 +0100 Julian Coleman <jdc%coris.org.uk@localhost> wrote: [...] > > Xorg on this box is just plain weird. The 888P has a 1400x1050 LCD > > display, but Xorg will only drive it at 1024x768. And Xorg.0.log shows > > that Xorg claims the builtin display is a CRT on the (external) VGA > > connector. > > This is almost certainly because we get the display size/depth from the PROM > and pass that on to X. Drawing only on the default 'screen' and ignoring what's in output-device? > > As an aside, even the OpenPROM settings for the display are strange; > > 'screen' comes up as 1024x768 while the boot font is too large to fit > > 80 columns in such. OpenPROM has 1280x1024 predefined, but no 1400x1050. > > I hope to get around to adding r1400x1050x60, but I'm currently ignorant > > of how to work out sync pulse width and porch width. > > Presumably it is using a standard PROM, so doesn't have any 1400x1050 > resolutions. What does the display attach as? I've got output-device set to screen:r1280x1024x60, so at least wscons comes up as that. Or am I misinterpreting your question? > You might find these of use when calculating video timings: > > > http://riksun.riken.go.jp/pub/pub/Linux/slackware/slackware-3.5/docs/XFree86-Video-Timings-HOWTO > http://www.tkk.fi/Misc/Electronics/faq/vga2rgb/calc.html Okay, thanks! > You could search for XFree or Xorg 1400x1050 timings - you might find one > that fits your TFT. If we can get the EDID data from the TFT, that would be > even better. No luck with getting EDID data from Xorg on the box. I'm considering building XFree for this to see what it puts in the logs.
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