Call for testing: drm/i915 update to Linux 3.16

Francois Tigeot ftigeot at
Sat Jul 25 10:34:51 PDT 2015


An update of the drm/i915 gpu driver to Linux 3.16 is almost ready

It is available in this git branch:
(detailled instructions below)

What you can expect:

* A critical function has been fixed to handle errors which could
  previously cause Xorg crashes.
* Much improved support for Broadwell GPUs. They should now be fully

* Various unrelated bug fixes and performance improvements on all GPU

This new driver version is currently known to be broken on some Core 2
machines but it will take time to bisect what change caused the regression.
The only working Core 2 box I have left is a single Core Celeron, which
isn't exactly fast for compiling kernels.

Apart from that, the code should work fine on Ivy-Bridge, Haswell, Broadwell
and hopefully other recent GPUs.

How to test the new branch:

* You must use a recent DragonFly 4.3 (-master) system
* git remote add leaf git://
* git fetch leaf
* git checkout drm_i915_linux_3_16v9
* make kernel && reboot


Francois Tigeot

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