* [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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.