[Bug 98146] DRI_PRIME=1 and fullscreen issues

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98146

--- Comment #5 from Darek Deoniziak <darekdeoniziak at gmail.com> ---
"Also are you using DRI2 or DRI3?"
Not sure how to check it. The `cat /var/log/Xorg.0.log | grep -i DRI3` command
gives me: `[ 40491.158] (==) RADEON(G0): DRI3 enabled` so looks like it is only
enabled, but not probably not used, when I look for DRI2 the outpout looks like
this: http://pastebin.com/Nevad1GD

Also in xorg.conf.d I have file `10-amdgpu.conf` with content:
Section "OutputClass"
        Identifier "AMDgpu"
        MatchDriver "amdgpu"
        Driver "amdgpu"
EndSection

but in `10-monitor.conf` I have setup at the end of file (which works fine,
except for issues I've mention earlier):
...
Section "Device"
    Identifier "Device0"
    Driver "intel"
EndSection

Section "Device"
    Identifier "Device1"
    Driver "radeon"
EndSection

Not sure what's the difference between radeon and amdgpu driver in this case,
can 10-amdgpu.conf be related to amdgpu-pro? I've tried amdgpu-pro few weeks
ago but that didn't work out at all so I decided to stick with opensource one.

Asking because I would like to try to enable DRI3 and recently it got kind of
harder to understand what drivers for radeon are in use (recently I think it
was only mesa and fglrx). To use DRI3 should file look like `20-radeon.conf` as
filename and inside:
Section "Device"
   Identifier "Radeon"
   Driver "radeon"
   Option "SwapBufferWait" "0"
   Option "DRI" "3"
EndSection

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