So, to correct me, the open-source-"driver" for your graphics (R9) is xserver-xorg-video-amdgpu . It's installed by default. Upon purge of fglrx, it should get selected as by default for ur graphics. To follow this see log-file: /var/log/gpu-manager-log.
As u can see [1] the provided version for Wily is rather old. You could test the newer version by incorporating the OIBAF-ppa into your Wily-Installation, since it doesn't have LTS-Enablement-Stack. I have this since a while in use in Wily with the most current mainline Kernel and tested also if ppa-purge works. It does. Mentioning this, because u should do so before an upgrade to 16.04.
Just for the completeness: Usage of PPA can lead to unexspected results and can eventually cause instabilities of a system.
Luca,
you may catch some interest in an article from Softpedia (Mar 10, 2016):
http:// news.softpedia. com/news/ canonical- recommends- open-source- amdgpu- and-radeon- drivers- for-ubuntu- 16-04-lts- 501556. shtml
So, to correct me, the open-source- "driver" for your graphics (R9) is xserver- xorg-video- amdgpu . It's installed by default. Upon purge of fglrx, it should get selected as by default for ur graphics. To follow this see log-file: /var/log/ gpu-manager- log.
As u can see [1] the provided version for Wily is rather old. You could test the newer version by incorporating the OIBAF-ppa into your Wily-Installation, since it doesn't have LTS-Enablement- Stack. I have this since a while in use in Wily with the most current mainline Kernel and tested also if ppa-purge works. It does. Mentioning this, because u should do so before an upgrade to 16.04.
Just for the completeness: Usage of PPA can lead to unexspected results and can eventually cause instabilities of a system.
[1] http:// packages. ubuntu. com/search? keywords= xserver- xorg-video- amdgpu& searchon= names&suite= all§ion= all