On Sat 08 Oct 2016 at 13:50:19 +0200, Hans Kraus wrote: > after following the propositions of Brian: > > > > dpkg -l | grep fglrx > > > >Lines with "ii" indicate installed packages. Purge and see what a reboot > >does. > and Jörg-Volker Peetz: > > Hi, > > > > I also saw the other e-mail exchange with Brian where you concluded to > purge all > > "fglrx"-related packages. Similarily, there seem to be "nvidia" packages > on your > > system. Try > > > > dpkg -l | grep -i nvidia > > > > Purge them also. Then have a look which xorg-video drivers are left: > > > > dpkg -l | grep xorg-video > > > > Leave only xserver-xorg-video-radeon on the system. > > > > And have a look if there's still an "glx-alternative" package left, like > > glx-alternative-mesa. This could also be purged. > > I issued:
[Account of package purging snipped] > Which partially solved my problems. The system is now booting into Gnome > again. This is a fantastic step forwards. Before you had nothing, now you have something. Why the original issue occured is a mystery. Why it was cured is also a mystery. > A problem remains: the contents of the screen (I controlled only text > based ones like Thunderbird) are sometimes overwritten. This happens for > lines where the text is partially overwritten with other text (normally > or skewed) and line backgrounds. The contents are restored if I move the > mouse pointer to the distorted parts. > > This looks like a driver issue to me. Is there a better mailing list to > cope with these problems as 'debian-user'? But now the proposition is very different. We know you cannot have that much of a driver problem because you can boot into GNOME. But you think you have. Maybe its so. Let's eliminate GNOME. Boot and do 'ps ax | grep xinit'. Kill xinit with 'kill process_number'. Install fvwm and xterm (you can purge them later). Issue the command 'startx'. Check that nothing gnomish is running with 'ps ax | grep gnome. Start an xterm (right or left click, I forget which). Any problems? Start iceweasel (firefox) from an xterm. Any problems? Read a few man pages. Any problems? Play with opening any program on your system. Any problems? Which program? What are the symptoms? -- Brian.