broadwell bugs with fglrx in xserver-xorg-video-intel

[Impact]
* Fixes crash when using SNA with fglrx IGPU mode.
* Adds UXA support for broadwell.

[Test Case]
* On an affected system:
* Run aticonfig --px-igpu to force intel driver being used.
* Disable gpu-manager, set accelmethod in /etc/X11/xorg.conf to UXA or SNA
* SNA: Observe a crash in freescreen, while a normal xserver with full acceleration is expected.
* UXA (default): xserver starts normally, but llvmpipe is used and no acceleration is used in intel at all.

[Regression Potential]
* Adding pci-id and names for broadwell and crv should always be safe, no regressions expected there.
* The uxa patches seem to be a noop for < gen8, which means I don't expect any regressions either.
* The sna-freescreen patch can not make things worse, because if sna is NULL the next statement would already crash, so in the worst case intel would crash elsewhere.
* I'll watch for regressions in -proposed, but I don't expect any from them because those patches are in utopic too. :-)

Hello Maarten, or anyone else affected,

Accepted xserver-xorg-video-intel into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/xserver-xorg-video-intel/2:2.99.910-0ubuntu1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Tested by woodrow.

The verification of the Stable Release Update for xserver-xorg-video-intel has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package xserver-xorg-video-intel - 2:2.99.910-0ubuntu1.1

---------------
xserver-xorg-video-intel (2:2.99.910-0ubuntu1.1) trusty; urgency=medium

  * Backport fixes from upstream driver for fglrx and broadwell. (LP: #1359105)
  * Add more pci-ids for broadwell.
    - add-pci-ids-crv.diff
    - add-pci-ids-brw.diff
    - add-names-brw.diff
  * Enable basic UXA blit acceleration for broadwell.
    - uxa-bdw-0.diff
    - uxa-bdw-1.diff
    - uxa-bdw-2.diff
  * Fix a crash in FreeScreen with sna when used with fglrx.
    - sna-freescreen.diff
 -- Maarten Lankhorst <email address hidden> Wed, 20 Aug 2014 10:48:06 +0200

This bug was fixed in the package xserver-xorg-video-intel - 2:2.99.914-1~exp1ubuntu3

---------------
xserver-xorg-video-intel (2:2.99.914-1~exp1ubuntu3) utopic; urgency=medium

  * Add patch to enable SNA with fglrx. (LP: #1359105)
 -- Maarten Lankhorst <email address hidden> Mon, 22 Sep 2014 15:29:05 +0200

Hello Maarten, or anyone else affected,

Accepted xserver-xorg-video-intel-lts-trusty into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/xserver-xorg-video-intel-lts-trusty/2:2.99.910-0ubuntu1.3~precise1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

This bug was fixed in the package xserver-xorg-video-intel-lts-trusty - 2:2.99.910-0ubuntu1.3~precise1