From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 106446] Stutter at higher refresh rates ( 75 Hz) and artifacts on desktop Date: Wed, 09 May 2018 04:10:23 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0872740171==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 890D36E73C for ; Wed, 9 May 2018 04:10:23 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0872740171== Content-Type: multipart/alternative; boundary="15258390230.E9B7de.11489" Content-Transfer-Encoding: 7bit --15258390230.E9B7de.11489 Date: Wed, 9 May 2018 04:10:23 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D106446 Bug ID: 106446 Summary: Stutter at higher refresh rates ( 75 Hz) and artifacts on desktop Product: DRI Version: unspecified Hardware: Other OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: mike@exophase.com Created attachment 139436 --> https://bugs.freedesktop.org/attachment.cgi?id=3D139436&action=3Dedit Xorg log I've noticed that moving around windows and scrolling seems to stutter when running at 75 Hz on my monitor. When moving back down to 60 Hz it is comple= tely smooth. In fact, 60 Hz looks smoother, while 75 looks like it is skipping frames. In Windows however it is completely smooth at 75 Hz. This occurs on a Radeon Pro WX 7100. The other thing I noticed... is that when I run at 75 Hz I get artifacts all over the desktop, which show up as flashing blue lines. This behavior is exhibited on all AMD GPUs I own (also tested with a RX Vega 64), so it's no= t a faulty card. I found that it is fixed by forcing the performance profile to high, like so: echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level I attached my Xorg log. I'm running the 4.16.6 kernel. Full specs: Threadripper 1950X 64GB RAM WX 7100 LG 38UC99 monitor --=20 You are receiving this mail because: You are the assignee for the bug.= --15258390230.E9B7de.11489 Date: Wed, 9 May 2018 04:10:23 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated
Bug ID 106446
Summary Stutter at higher refresh rates ( 75 Hz) and artifacts on des= ktop
Product DRI
Version unspecified
Hardware Other
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter mike@exophase.com 

Created attachment 139436 [detai=
ls]
Xorg log

I've noticed that moving around windows and scrolling seems to stutter when
running at 75 Hz on my monitor. When moving back down to 60 Hz it is comple=
tely
smooth. In fact, 60 Hz looks smoother, while 75 looks like it is skipping
frames.

In Windows however it is completely smooth at 75 Hz. This occurs on a Radeon
Pro WX 7100.

The other thing I noticed... is that when I run at 75 Hz I get artifacts all
over the desktop, which show up as flashing blue lines. This behavior is
exhibited on all AMD GPUs I own (also tested with a RX Vega 64), so it's no=
t a
faulty card. I found that it is fixed by forcing the performance profile to
high, like so:

echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level

I attached my Xorg log. I'm running the 4.16.6 kernel. Full specs:

Threadripper 1950X
64GB RAM
WX 7100
LG 38UC99 monitor

You are receiving this mail because:
  • You are the assignee for the bug.
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