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epsilon72
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Joined: 20 Sep 2007
Posts: 568
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 Posted: Wed Feb 03, 2016 11:48 pm Post subject: DRI_PRIME=1 only uses intel instead of radeon |
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I have an intel/radeon hybrid graphics laptop and I'm having trouble getting DRI_PRIME=1 rendering working. I'm thinking that I might be missing some kernel config option somewhere, but I don't really know.
When I run an application with DRI_PRIME=1, the intel gpu is used instead of the radeon gpu.
DRI_PRIME works fine in other distros that I've tried (Debian 8, CentOS 7, Fedora 23)
Intel GPU is HD 4600 and Radeon GPU is FirePro m6100 (HD 8950)
xrandr --listproviders shows both gpu's:
| Code: | $ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x82 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 5 associated providers: 0 name:Intel
Provider 1: id: 0x59 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 6 outputs: 4 associated providers: 0 name:radeon |
This is strange though, because in other distros the radeon is listed twice as provider 1 and 2.
gentoo-sources-4.3.4 kernel config: http://pastebin.com/RJwbWGi4
dmesg: http://pastebin.com/E29jkzEK
| Code: |
x11-base/xorg-server-1.17.4
x11-drivers/xf86-video-intel-2.99.917-r2
x11-drivers/xf86-video-ati-7.6.1
media-libs/mesa-11.0.6
sys-devel/llvm-3.7.1 |
Using gnome 3.16 w/ systemd.
Any ideas? |
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epsilon72
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Joined: 20 Sep 2007
Posts: 568
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| Posted: Tue Feb 16, 2016 6:36 pm Post subject: |
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I got it working, it looks like I still have to run:
| Code: | | xrandr --setprovideroffloadsink radeon Intel |
in order for DRI_PRIME=1 to work. I wish I knew how this is done automatically in other distros though. |
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