On Sun, 2008-10-05 at 16:22 +0200, Gerhard Pircher wrote: > > Recently I tried out Debian Lenny on my AmigaOne G4 with a Radeon 9250. > I have a LCD monitor connected to it through DVI-I. Unfortunately the X > server outputs a flickering display to which the monitor can't synchronize and > thus is simply black most of the time. The same hardware configuration works > fine under Debian Etch, thus I guess it is a problem with the X.org radeon > driver. Did anybody else experienced this problem? > I also included the X.org.log file, but as far as I can tell it doesn't show > any > information related to this problem.
It shows that the 1600x1200 mode has a pixel clock of 162 MHz, which is close the single link DVI limit of 165 MHz. There are a couple of reports of problems like this at http://bugs.freedesktop.org with various suggestions for workarounds; IIRC the most workable ones come down to using custom mode definitions, using either reduced blanking periods or a lower refresh rate. If you haven't yet, you might also want to try the driver upstream Git snapshot from experimental, there have been some tweaks to the clock programming code. -- Earthling Michel Dänzer | http://tungstengraphics.com Libre software enthusiast | Debian, X and DRI developer -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
