Comment 14 for bug 1727401

@Timo

Here is the test result of mesa (xenial-proposed)

A. Test Result:
1. DRI_PRIME=1 glxgear: Pass
2. DRI_PRIME=1 glxgear -fulscreen: Pass
3. glxgear: Pass
4. glxgear -fulscreen: Pass
5. Unigine_Heaven-4.0.run (5mins): Pass
6. Unigine_Heaven-4.0.run (Fullscreen, 5mins): Pass
7. DRI_PRIME=1 Unigine_Heaven-4.0.run (5mins): Pass
8. DRI_PRIME=1 Unigine_Heaven-4.0.run (Fullscreen, 5mins): Pass

B. Test Environment:
1. Ubuntu: Xenial 16.04
2. Graphic Card:
 b. Intel [8086:5917] (rev 07) + AMD [1002:6900] (rev ff)
3.Installed package:
 a. Online Update
 b. Enable xenial-proposed and then upgrade mesa
libglapi-mesa_17.2.4-0ubuntu1~16.04.3~1_amd64.deb
libgl1-mesa-dri_17.2.4-0ubuntu1~16.04.3~1_amd64.deb
libxatracker2_17.2.4-0ubuntu1~16.04.3~1_amd64.deb
libwayland-egl1-mesa_17.2.4-0ubuntu1~16.04.3~1_amd64.deb
libgl1-mesa-glx_17.2.4-0ubuntu1~16.04.3~1_amd64.deb
libgbm1_17.2.4-0ubuntu1~16.04.3~1_amd64.deb
libegl1-mesa_17.2.4-0ubuntu1~16.04.3~1_amd64.deb