Build VAAPI with support for VP8/9 decode and encode hardware acceleration on a Skylake validation testbed:
Build platform: Ubuntu 16.04LTS.
First things first:
Install baseline dependencies first
sudo apt-get -y install autoconf automake build-essential libass-dev libtool pkg-config texinfo zlib1g-dev libva-dev cmake mercurial libdrm-dev libvorbis-dev libogg-dev git libx11-dev libperl-dev libpciaccess-dev libpciaccess0 xorg-dev intel-gpu-tools
To limit a CPU to a certain C-state, you can pass the processor.max_cstate=X option in the kernel line of /boot/grub/grub.conf.
Here we limit the system to only C-State 1:
kernel /vmlinuz-2.6.18-371.1.2.el5 ... processor.max_cstate=1
On some systems, the kernel can override the BIOS setting, and the parameter intel_idle.max_cstate=0 may be required to ensure sleep states are not entered:
| commit 3c1bdd234926334b36f68a2a522044eee5a80066 | |
| Author: Tiago Vignatti <tiago.vignatti@intel.com> | |
| Date: Thu Jul 3 16:32:09 2014 -0300 | |
| hack for starting secondary display | |
| diff --git a/ui/ozone/platform/dri/screen_manager.cc b/ui/ozone/platform/dri/screen_manager.cc | |
| index ada162d..6fbf94c 100644 | |
| --- a/ui/ozone/platform/dri/screen_manager.cc | |
| +++ b/ui/ozone/platform/dri/screen_manager.cc |
| #include <cstdio> | |
| #include <algorithm> | |
| #include <cmath> | |
| using namespace std; | |
| struct point_type{ | |
| double x; | |
| double y; | |
| }; | |
| bool cmp(point_type a,point_type b) | |
| { |