[PATCH 0/1] [Karmic] LP#351756 -- enable dual head setups on i915

[Andy Whitcroft]

When enabling dual head setups on Intel we commonly risk blowing the
2048x2048 limit meant to protect us from overrunning the scanout capacity
of the chip.  When this limit is exceeded Xorg will crash on start.  Actually
for the majority of i915 family chips the real limit is 4096 which is more
than enough for current monitors in side-by-side mode.  The patch which
follows ups the limit for the appropriate chipsets.  This patch has been
validate by and comes from Intel.

This missed 2.6.31-rc4 and is expected to make it upstream for v2.6.31.
However without this change we are unable to continue testing of dual-head
configurations which is a pain point the X team is trying to improve
currently.  As this is being hit in the wild and inhibiting testing I am
proposing we pull it into Karmic ahead of its acceptance into mainline.

-apw

Keith Packard (1):
  UBUNTU: SAUCE: drm/i915: Allow frame buffers up to 4096x4096 on
    915/945 class hardware

 drivers/gpu/drm/i915/intel_display.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)