On Wed, Nov 22, 2000 at 02:48:45PM +0000, jon ewing wrote: > > Hi, > > If I understand correctly, when I boot with > > append="video=aty128fb:vmode:20,cmode=32" > > in my yaboot.conf, the aty128fb driver will be communicating directly with > my graphics hardware. When I then start X using the fbdev driver, the modes > available to X are limited by the modes available to aty128fb. So, if I add > a new mode to fb.modes and am able to successfully switch to that mode on > the console using, eg, fbset --test, then I should also be able to run X in > that mode. > > My fb.modes initially contained 3 "1600x1200-.." modes (.. = 60, 66 or 76), > but if I try fbset-ing to any of these modes the screen goes blank. By > default the console appears at 1280x1024-75. > > If instead I boot with novideo then my console appears in glorious > 1600x1200. I then tried fbset, which returned > > mode "1600x1200-49" > # D: 100.00 MHz, H: 60.976 kHz, V: 49.174 Hz > geometry 1600 1200 1600 1200 8 > timings 10000 16 16 16 16 8 8 > endmode The video mode information returned while using offb (novideo) is not valid, as far as I know, so using this will not work. > I added this to my fb.modes, changed my yaboot.conf back to aty128fb, > rebooted, tried fbset --test "1600x1200-49", and again the screen went blank. > > Am I going about this the right way? > > Olaf - I tried those settings and each of them just blanked the screen. Are > you booting with the aty128fb driver or with novideo (or something else)? > Also, are you using the fbdev driver for X or the r128 driver? What > parameters are you passing to the driver? > > Michel - How would I find the timings that I'd need in order to add a > 1600x1280 mode to my fb.modes? Try the mode lines from Olaf (which I haven't tried, but let's assume they're right), and make sure you do NOT have UseFBDev in your /etc/X11/XF86Config file. This sounds like it might be a bug in the aty128fb driver. ttyl, -- Josh Huber | huber@debian.org | | Debian Developer | 1024D/6B21489A 61F0 6138 BE7B FEBF A223 E9D1 BFE1 2065 6B21 489A
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