X.Org X server

  1. Bug #1393205
  2. Comment #68

Comment 68 for bug 1393205

Revision history for this message
In , Janus (ysangkok+launchpad) wrote :

I was wrong, DebugWait didn't help. I disabled DebugWait again of course.

It looks as if upgrading to kernel v3.19-rc1 did though.

I got the kernel here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-rc1-vivid/

However, the commit ID of the patch doesn't match the one Daniel Vetter gave above. I found this though, with the same commit description: https://github.com/torvalds/linux/commit/656bfa3afc14e45e2d9e1624bf60d79b3beb12f2

In debugfs, I can see that the new code paths are getting hit:

# cat /sys/kernel/debug/dri/0/i915_swizzle_info
bit6 swizzle for X-tiling = bit9/bit10/bit11
bit6 swizzle for Y-tiling = bit9/bit11
DDC = 0x000f0002
DDC2 = 0x00000000
C0DRB3 = 0x0000
C1DRB3 = 0x0000
L-shaped memory detected