This bug was fixed in the package mesa - 10.1.3-0ubuntu0.3
---------------
mesa (10.1.3-0ubuntu0.3) trusty; urgency=medium
* Backport Braswell support (LP: #1404217)
- i965-add-cherryview-support.diff
- i965-drop-bogus-instructions-use-mov.diff
- i965-initialize-more-device-info-fields-chv.diff
- i965-store-absolute-thread-count.diff
- i965-use-mov-not-or-for-setting-urb.diff
-- Timo Aaltonen <tjaal...@debian.org> Fri, 19 Dec 2014 14:47:21 +0200
** Changed in: mesa (Ubuntu Trusty)
Status: Fix Committed => Fix Released
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Touch seeded packages, which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/1404217
Title:
Backport support for Cherryview/Braswell
Status in mesa package in Ubuntu:
Invalid
Status in mesa source package in Trusty:
Fix Released
Bug description:
[Impact]
Mesa 10.1.x doesn't enable support for CHV/BSW, like it didn't for
Broadwell. Enabling it needs five commits backported from 10.2:
70285f607ce2a06 i965: initialize more device info fields for Cherryview
9b6b084eb7b10d0 i965: Add Cherryview support.
850e372fc7ff337 i965: Drop bogus F32TO16/F16TO32 instructions on Broadwell -
use MOV.
a5e54c91a3b7355 i965: Store absolute thread count in max_wm_threads on
Broadwell.
dca84b4b5b23b68 i965: Use MOV, not OR for setting URB write channel enables
on Gen8+.
[Test Case]
install trusty on a BSW machine, unity falls back to software rendering which
is slow.
[Regression potential]
Slim, since it enables new HW, and though some commits are shared with BDW
(they are both gen8) they are bugfixes.
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