Subsequent investigation reveals that if I add the i915 module to the /etc/modprobe.d/blacklist.conf file and reboot the problem goes away. Checking the Debian 6 partition on the same machine shows that Debian does not attempt to load both modules, so the question is why does Ubuntu?
Subsequent investigation reveals that if I add the i915 module to the /etc/modprobe. d/blacklist. conf file and reboot the problem goes away. Checking the Debian 6 partition on the same machine shows that Debian does not attempt to load both modules, so the question is why does Ubuntu?