From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 105300] amd-staging-drm-next-git 4.16 & RX 560 DL-DVI: corruption with refreshrates >73Hz when DPM changing VRAM clock Date: Wed, 31 Oct 2018 18:58:30 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1575266925==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 9CC646E386 for ; Wed, 31 Oct 2018 18:58:30 +0000 (UTC) In-Reply-To: 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 --===============1575266925== Content-Type: multipart/alternative; boundary="15410123102.3aeE0cfb.28061" Content-Transfer-Encoding: 7bit --15410123102.3aeE0cfb.28061 Date: Wed, 31 Oct 2018 18:58:30 +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=3D105300 --- Comment #15 from tempel.julian@gmail.com --- Issue still exists with current 4.21-wip kernel. As a workaround, it's enough to force the highest VRAM clock state (Forcing higher clocks on the GPU itself is not necessary.): echo "manual" > /sys/class/drm/card0/device/power_dpm_force_performance_lev= el echo "2" > /sys/class/drm/card0/device/pp_dpm_mclk Odd side note: It doesn't help to overclock the lower VRAM pstates to the s= ame clocks and voltages as the highest one. --=20 You are receiving this mail because: You are the assignee for the bug.= --15410123102.3aeE0cfb.28061 Date: Wed, 31 Oct 2018 18:58:30 +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

Comme= nt # 15 on bug 10530= 0 from tempel.j= ulian@gmail.com 
Issue still exists with current 4.21-wip kernel.

As a workaround, it's enough to force the highest VRAM clock state (Forcing
higher clocks on the GPU itself is not necessary.):

echo "manual" > /sys/class/drm/card0/device/power_dpm_force_pe=
rformance_level
echo "2" >  /sys/class/drm/card0/device/pp_dpm_mclk

Odd side note: It doesn't help to overclock the lower VRAM pstates to the s=
ame
clocks and voltages as the highest one.

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