Dear friends, I am reporting a little improvement wrt the posted situation.
uninstalled packages: - Debian's xserver-fbdev (which provides the file /usr/X11R6/bin/XF68_FBDev for XF3) - LinuxPPC's xfree-xvfb (which provides the file /usr/X11R6/bin/Xvfb for XF4, via alien) installed packages: - Debian's xvfb (which provides the file /usr/X11R6/bin/Xvfb for XF4) I then renamed /etc/X11/XF86Config to XF86Config-4, as recommended in the manual for XF86Config, and modified its content to use 0:17:0 as bus for the ATI card. WRT yesterday's reported bug, the resulting system does not crash anymore. I also noted that the setting for the PCI pus may be commented out, as startx will auto-probe its value (single video system). What remains to do is to actually see the picture. I have been kindly advised by Michel Dänzer on the existence of a kernel patch from Michael Schmitz. Dear Michael, as I am now using a different machine with a proper mail client, and I do not have your address here, could you please tell me where I can find your patch and, in the first place, if you think it may be of help in the present situation? Thank you in advance. Sergio