Public bug reported: Binary package hint: xserver-xorg-video-fbdev
Ubuntu 9.04PPC "out-of-the-box" fresh install on an iMac DV 400MHz (G3, slot-loader): After the install, xorg.conf stays empty. Hence, X tries to figure out the correct settings and driver automatically. On my iMac, X fails to detect the built-in ATI Rage 128 card (see https://bugs.launchpad.net/ubuntu/+source/xserver-xorg- video-r128/+bug/400864 ) and subsequently tries to use the fbdev driver. When doing so, X does start, however, only 256 colours are used (8bit PseudoColor mode). I tried to investigate the cause for this and tried several things: 1) Create a minimal xorg.conf (the attached version contains some commented out lines from experimenting) with "DefaultDepth 24" in the Screen section. This results in an error message "FBIOPUT_VSCREENINFO succeeded but modified mode" (see attached Xorg.0.log). 2) I tried the same thing using "DefaultFbBpp 32" instead of "DefaultDepth 24". The result was the same. 3) I noticed in the log file that apparently the modes are checked against the fbdev set-up. The default frame-buffer set-up as listed by "fbset -i -v" is attached as well. It can be seen from this output and Xorg.0.log that the frame buffer seems to have 8bit only and only some 600KB of video memory. Hence, I tried modifying these settings with fbset - to no avail. I also tried adding a "VideoRam" statement to xorg.conf - also to no avail. I was not able to change any settings. In the end, I am still not able to run anything but 8bit graphics using the fbdev driver. My impression is that this is due to the frame buffer being in the wrong mode itself, but this seemingly cannot be changed easily. The same hardware works fine with 24bit under 8.04, using the r128 driver. ** Affects: xserver-xorg-video-fbdev (Ubuntu) Importance: Undecided Status: New ** Tags: apple ati fbdev imac ppc rage xorg -- 9.04 PPC: fbdev wrongly configured in X https://bugs.launchpad.net/bugs/400875 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs