With Ubuntu 16.04, fglrx and Catalyst Center is no more. How can I change my primary video card on dual graphic systems like Intel/AMD or AMD/AMD. Is there a script for this, or a good manual?
Update 1: I found a manual about vgaswitcheroo. It just gives me more problems. The laptop in my hands has an Intel Haswell and an AMD Radeon HD 8850M / R9 M265X.
sudo cat /sys/kernel/debug/vgaswitcheroo/switch gives:
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Pwr:0000:03:00.0
I tried using echo DDIS on the file, which should normally switch to the dedicated at the next X-session start. Using reboot, there was no effect. Giving the command and using Logout, I only got low graphics mode error and couldn't get back to the system. Thankfully after a hard reboot things returned back to the original.
I also tried using echo OFF (if I can't get it to work, why leave it on). On next reboot this worked, but too efficiently. Not only the dedicated device was no more listed in lspci, even the switch file vanished. Not sure, if this is intentional. A bit later I somehow managed to get back to the starting point.
My aim is still the same. I would like to use the dedicated one and be able to switch between the two.
Update 2: My dedicated card uses the radeon kernel driver, so the problem shouldn't be related to the amdgpu driver being new and not supported by vgaswitcheroo.
Update 3: Haven't read it through in details, but seems to be a bug listed here: bugs.launchpad At least he doesn't get black screen like me whenever trying.
