[Intel-gfx] [PATCH 26/29] drm/i915: Invert watermarks used for i8xx, i9xx.
eric at anholt.net
Tue Aug 31 00:39:10 CEST 2010
On Sun, 22 Aug 2010 12:05:45 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> The calculation seem backwards as they compute the number of entries
> that would be drained during a memory fetch, and but return the opposite
> This fixes a common flicker [or even completely scrambled display] on
> high resolution outputs (e.g. 1920x1080 with 915GM). However, as we do not
> adjust DSPARB, we are still limited by the FIFO setup by the BIOS which may
> continue to cause underruns with high resolutions on some machines.
> Bug 22996 - [945GM] external lcd does not work on high resolution
> Bug 25284 - [915GM] random flickering when using metacity-compositor
> Bug 25857 - : Entire screen "jerks" randomly after removing external monitor
> Bug 27738 -  1920x1200 resolution fails, probable FIFO issue.
> Bug 28149 - [945GM] KMS regression.
> Also it may address some instances where the monitor fails to sync
> due to underruns.
What's up with all the bug references here? I hit the first 3 and
didn't see any mention of this patch. I'd probably prefer to see either
Tested-by or nothing.
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