* [BUG] Again panning problems on i830 chipsets
@ 2015-06-01 9:33 Thomas Richter
0 siblings, 0 replies; only message in thread
From: Thomas Richter @ 2015-06-01 9:33 UTC (permalink / raw)
To: intel-gfx
Hi folks,
when playing with the 4.1.0-rc5 kernel coming from the latest
intel-drm-nightly branch yesterday, I noted that this branch again
introduces problems with panning on i830 based machines. This panning
bug seems to be unrelated to the long-ago resolved mis-configuration of
the watermark registers.
From the effects I see, I would guess that the problem is due to some
i830 registers now changing mid-screen rather than synchronized to the
top of the screen (or vertical blank). In fact, I see some tearing-type
artifacts during scrolling where the panel misses synchronization
mid-screen.
I have not yet tried to bisect the error due to the slowness of the
kernel compilation on those machines, but this seems to be a relatively
recent bug.
Greetings,
Thomas
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2015-06-01 10:20 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-06-01 9:33 [BUG] Again panning problems on i830 chipsets Thomas Richter
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox