Public bug reported:

[Impact]

Mesa 10.5.x suffers from a GPU hang on Skylake HW, bisected fix in
10.6.x:

commit 74fd226e34d0cf5e9ff43174ae69b4a66f5de1ab
Author: Ben Widawsky <benjamin.widaw...@intel.com>
Date:   Wed Mar 25 16:52:46 2015 -0700

    i965/skl: Don't use the PMA depth stall workaround

the system freezes soon after, causing loss of data.

[Test Case]

* installl chromium version 41.x (webgl disabled on later versions)
* open https://jbouny.github.io/fft-ocean/
* grab the ship, rotate quickly
* should freeze in a few seconds

[Regression Potential]

* none, it's a gen9 specific workaround

** Affects: mesa (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: mesa-lts-vivid (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: mesa (Ubuntu Vivid)
     Importance: High
     Assignee: Timo Aaltonen (tjaalton)
         Status: New

** Affects: mesa-lts-vivid (Ubuntu Vivid)
     Importance: Undecided
         Status: New

** Also affects: mesa (Ubuntu Vivid)
   Importance: Undecided
       Status: New

-- 
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which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/1486522

Title:
  [SKL] GPU hang with webgl demo

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