First one does not crash, and gives this message in terminal:
$ LIBGL_DRIVERS_DIR=/usr/lib/dri /usr/lib/xscreensaver/pipes
radeon: The kernel rejected CS, see dmesg for more information.
Second one crashes after ~7seconds (see terminal message below), but I don't know how to give you the backtrace.
$ LIBGL_DRIVERS_DIR=/usr/lib/dri-classic /usr/lib/xscreensaver/pipes
pipes: ../../radeon/radeon_cs_gem.c:129: cs_gem_write_reloc: Assertion `boi->space_accounted' failed.
Abandon (core dumped)
Ok, I installed the PPA packages.
First one does not crash, and gives this message in terminal: DIR=/usr/ lib/dri /usr/lib/ xscreensaver/ pipes
$ LIBGL_DRIVERS_
radeon: The kernel rejected CS, see dmesg for more information.
Second one crashes after ~7seconds (see terminal message below), but I don't know how to give you the backtrace. DIR=/usr/ lib/dri- classic /usr/lib/ xscreensaver/ pipes radeon_ cs_gem. c:129: cs_gem_write_reloc: Assertion `boi->space_ accounted' failed.
$ LIBGL_DRIVERS_
pipes: ../../radeon/
Abandon (core dumped)