From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 93826] 2560x1440 @144Hz graphic glitches and bad refresh rate
Date: Thu, 15 Jun 2017 22:05:03 +0000 [thread overview]
Message-ID: <bug-93826-502-kS1kKSHfuz@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-93826-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=93826
--- Comment #68 from iuno@posteo.net ---
(In reply to Alex Deucher from comment #67)
> Do you get flickering at 144Hz without forcing the mclk to high? I.e.,
> without these patches:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/
> ?id=0a646f331db0eb9efc8d3a95a44872036d441d58
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/
> ?id=58d7e3e427db1bd68f33025519a9468140280a75
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/
> ?id=09be4a5219610a6fae3215d4f51f948d6f5d2609
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/
> ?id=2275a3a2fe9914ba6d76c8ea490da3c08342bd19
Yes, I've experienced that before and just tested it again.
> > Do you know how this works on Windows? Do they increase voltage without
> > raising clocks and could this be an option for amdgpu too?
>
> It's not the mclk frequency or voltage, it's the blanking period for the
> display timing, it's apparently too short on some monitors at very high
> refresh rates for the mclk to finish switching in time. If part of the mclk
> switch happens outside of the vblank period, you end up with flickering or
> other display artifacts.
I assumed it is related to any voltage because higher sclk helps too. I'll just
call sclk/mclk dpm states "sdpm" and "mdpm"
auto (sdpm 0, mdpm 0 or switching through states): very bad flickering and
artifacts
sdpm 1-7, mdpm 0: better (still flickering/artifacts, but only when bigger
areas on the screen are updated)
sdpm any, mdpm 1: no flickering and artifacts
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next prev parent reply other threads:[~2017-06-15 22:05 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-22 18:29 [Bug 93826] 144Hz graphic glitches and bad resolution bugzilla-daemon
2016-01-22 18:30 ` bugzilla-daemon
2016-01-22 18:31 ` bugzilla-daemon
2016-01-22 18:32 ` bugzilla-daemon
2016-01-22 18:32 ` bugzilla-daemon
2016-01-22 18:33 ` bugzilla-daemon
2016-01-22 18:34 ` bugzilla-daemon
2016-01-22 18:35 ` bugzilla-daemon
2016-01-22 18:36 ` bugzilla-daemon
2016-01-22 18:36 ` bugzilla-daemon
2016-01-22 18:37 ` [Bug 93826] 144Hz graphic glitches and bad refresh rate bugzilla-daemon
2016-01-22 18:41 ` bugzilla-daemon
2016-01-22 18:41 ` bugzilla-daemon
2016-01-22 18:42 ` bugzilla-daemon
2016-01-22 18:42 ` bugzilla-daemon
2016-01-23 23:23 ` bugzilla-daemon
2016-01-25 7:27 ` bugzilla-daemon
2016-01-25 8:39 ` bugzilla-daemon
2016-02-24 17:25 ` bugzilla-daemon
2016-02-27 14:05 ` bugzilla-daemon
2016-02-27 14:11 ` bugzilla-daemon
2016-02-29 22:42 ` bugzilla-daemon
2016-02-29 22:59 ` bugzilla-daemon
2016-03-01 7:12 ` bugzilla-daemon
2016-05-12 18:11 ` bugzilla-daemon
2016-05-23 11:17 ` bugzilla-daemon
2016-05-23 11:31 ` bugzilla-daemon
2016-05-24 16:21 ` bugzilla-daemon
2016-06-19 16:28 ` bugzilla-daemon
2016-07-06 16:28 ` bugzilla-daemon
2016-10-09 7:11 ` bugzilla-daemon
2016-10-09 7:15 ` bugzilla-daemon
2016-10-09 7:16 ` [Bug 93826] 2560x1440 @144Hz " bugzilla-daemon
2016-10-12 9:03 ` bugzilla-daemon
2016-10-12 13:34 ` bugzilla-daemon
2016-10-13 17:41 ` bugzilla-daemon
2016-10-14 1:16 ` bugzilla-daemon
2016-10-14 18:50 ` bugzilla-daemon
2016-10-15 6:30 ` bugzilla-daemon
2016-10-19 11:07 ` bugzilla-daemon
2016-10-19 11:11 ` bugzilla-daemon
2016-10-19 21:07 ` bugzilla-daemon
2016-10-20 17:16 ` bugzilla-daemon
2016-10-21 11:12 ` bugzilla-daemon
2016-12-07 20:06 ` bugzilla-daemon
2016-12-08 0:53 ` bugzilla-daemon
2016-12-08 0:54 ` bugzilla-daemon
2016-12-08 17:51 ` bugzilla-daemon
2016-12-10 1:28 ` bugzilla-daemon
2017-04-26 23:14 ` bugzilla-daemon
2017-05-11 9:46 ` bugzilla-daemon
2017-05-22 14:34 ` bugzilla-daemon
2017-05-22 14:55 ` bugzilla-daemon
2017-05-22 16:23 ` bugzilla-daemon
2017-05-23 11:29 ` bugzilla-daemon
2017-05-29 9:32 ` bugzilla-daemon
2017-06-07 15:36 ` bugzilla-daemon
2017-06-07 16:41 ` bugzilla-daemon
2017-06-07 19:04 ` bugzilla-daemon
2017-06-08 1:46 ` bugzilla-daemon
2017-06-11 23:57 ` bugzilla-daemon
2017-06-12 23:40 ` bugzilla-daemon
2017-06-14 8:15 ` bugzilla-daemon
2017-06-15 14:19 ` bugzilla-daemon
2017-06-15 15:16 ` bugzilla-daemon
2017-06-15 18:29 ` bugzilla-daemon
2017-06-15 19:33 ` bugzilla-daemon
2017-06-15 19:41 ` bugzilla-daemon
2017-06-15 20:06 ` bugzilla-daemon
2017-06-15 20:24 ` bugzilla-daemon
2017-06-15 20:49 ` bugzilla-daemon
2017-06-15 21:30 ` bugzilla-daemon
2017-06-15 22:05 ` bugzilla-daemon [this message]
2017-06-16 22:20 ` bugzilla-daemon
2017-06-19 17:33 ` bugzilla-daemon
2017-06-19 17:42 ` bugzilla-daemon
2017-06-20 10:07 ` bugzilla-daemon
2017-06-20 22:05 ` bugzilla-daemon
2017-06-21 19:38 ` bugzilla-daemon
2017-07-09 20:25 ` bugzilla-daemon
2017-08-31 16:48 ` bugzilla-daemon
2017-09-16 10:55 ` bugzilla-daemon
2017-09-16 10:56 ` bugzilla-daemon
2018-11-07 21:40 ` bugzilla-daemon
2018-11-28 13:28 ` bugzilla-daemon
2019-11-19 9:12 ` bugzilla-daemon
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