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Xywa Veteran
Joined: 23 Jul 2005 Posts: 1631 Location: /mnt/Gentoo/Europe
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Posted: Sun Apr 03, 2016 9:23 am Post subject: UXA vs SNA = Plasma 5 & Nvidia Optimus |
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Hi,
Here is interesting article:
http://news.softpedia.com/news/critical-intel-graphics-driver-bug-puts-kde-plasma-5-in-a-really-bad-light-488621.shtml
and interesting workaround:
Quote: | The good news is that a workaround for the bug is already available, and it requires you to modify the /etc/X11/xorg.conf.d/20-intel.conf file from your Linux kernel-based operating system, by switching back to the older UXA acceleration method instead of the default SNA method used in many distros. Below is an example of what your 20-intel.conf file should look like if you're running KDE Plasma 5. |
Does anyone tried this? Did it help in Plasma 5 & Optimus mistery?
My set up before the tests looks like:
Code: | # equery u xf86-video-intel
[ Legend : U - final flag setting for installation]
[ : I - package is installed with flag ]
[ Colors : set, unset ]
* Found these USE flags for x11-drivers/xf86-video-intel-2.99.917_p20160324:
U I
- - debug : Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see
https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
+ + dri : Enable direct rendering: used for accelerated 3D and some 2D, like DMA
+ + dri3 : Enable DRI3 support
+ + sna : Enable SandyBridge's New Acceleration (useful on all chipsets, not just SandyBridge)
+ + udev : Enable virtual/udev integration (device discovery, power and storage device support, etc)
- + uxa : Enable UMA Acceleration Architecture
- + xvmc : Enables X-Video Motion Compensation support |
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chithanh Developer
Joined: 05 Aug 2006 Posts: 2158 Location: Berlin, Germany
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Xywa Veteran
Joined: 23 Jul 2005 Posts: 1631 Location: /mnt/Gentoo/Europe
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