unblock radeon on video-catalyst un-installation

Merged Philip Müller requested to merge Tids:master into master

Created by: Tids

In the installation routine, with the call of

mhwd-gpu --setmod catalyst

mhwd will create a blocking part for radeon, and a force loading of fglrx in /etc/modprobe.d/mhwd-gpu.conf & /etc/modules-load.d/mhwd-gpu.conf

Both parts will not removed, when uninstalling video-catalyst. Users of a radeon-supported graphicscard are now unable to to switch to video-ati or video-*-radeon-prime.

With this little change both blocking parts will removed and users should be able to load up radeon after system-restart just fine.

An example in our forums ^ unlike here, i dont remove the files completely, but only the lines with blacklist radeon, fglrx so it should be save to use.

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