I'm trying to test Intel's SNA acceleration on Haswell, but Xorg is not loading my settings. All of the documentation on enabling SNA is basically the same. Create /etc/X11/xorg.conf.d/20-intel.conf containing
Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "sna" BusID "PCI:0:2:0" EndSection
Then reboot. Unfortunately, my Fedora 20 system always keeps using UXA acceleration based on
~: grep -ie uxa -ie sna /var/log/Xorg.0.log (II) UXA(0): Driver registered support for the following operations:
I've read through the full /var/log/Xorg.0.log file and don't see any sort of errors. From the beginning of the log, this section seems like the only relevant part:
(==) Using config directory: "/etc/X11/xorg.conf.d" (==) Using system config directory "/usr/share/X11/xorg.conf.d" (==) No Layout section. Using the first Screen section. (==) No screen section available. Using defaults. (**) |-->Screen "Default Screen Section" (0) (**) | |-->Monitor "<default monitor>" (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. (==) Automatically adding devices (==) Automatically enabling devices (==) Automatically adding GPU devices
Has anyone else been able to enable SNA in Fedora 20 and were any special steps needed?
Thanks, Justin
On 16.05.2014, Justin Brown wrote:
Has anyone else been able to enable SNA in Fedora 20 and were any special steps needed?
Yes, has been working for me quite some time.
20-intel.conf:
Section "Device" Identifier "Card0" Driver "intel" Option "AccelMethod" "SNA" EndSection
Are you sure that your Device-ID is correct?
On 17.05.2014, Heinz Diehl wrote:
Section "Device" Identifier "Card0" Driver "intel" Option "AccelMethod" "SNA" EndSection
[htd@kiera ~]$ grep -ie uxa -ie sna /var/log/Xorg.0.log [ 4.564] (**) intel(0): Option "AccelMethod" "SNA" [ 4.565] (II) intel(0): SNA initialized with Ironlake (gen5) backend