From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 96868] AMDGPU Tonga only does 2560x1440 at 120hz, switching to 144hz causes display errors, same thing used to happen with fglrx. Date: Sat, 26 Nov 2016 21:02:33 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0926315901==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 412486E176 for ; Sat, 26 Nov 2016 21:02:33 +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 --===============0926315901== Content-Type: multipart/alternative; boundary="14801941531.ff9A.28314"; charset="UTF-8" --14801941531.ff9A.28314 Date: Sat, 26 Nov 2016 21:02:33 +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=3D96868 --- Comment #11 from sonyp2p@gmail.com --- (In reply to Alex Deucher from comment #4) > Does forcing the clocks to high or low fix the issue? (as root): > echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level > or > echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level I did this test and I can confirm that if I set power_dpm_force_performance_level to high or log the flickering stops. So at 144Hz with power_dpm_force_performance_level set to auto there is flickering. With power_dpm_force_performance_level set to high or low this bug is not present. --=20 You are receiving this mail because: You are the assignee for the bug.= --14801941531.ff9A.28314 Date: Sat, 26 Nov 2016 21:02:33 +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

Commen= t # 11 on bug 96868<= /a> from sonyp2p@gmail.co= m 
(In reply to Alex Deucher from comment #4)
> Does forcing the clocks to high or low fix the i=
ssue? (as root):
> echo high > /sys/class/drm/card0/device/power_dpm_force_performance=
_level
> or
> echo low > /sys/class/drm/card0/device/power_dpm_force_performance_=
level

I did this test and I can confirm that if I set
power_dpm_force_performance_level to high or log the flickering stops.
So at 144Hz with power_dpm_force_performance_level set to auto there is
flickering.
With power_dpm_force_performance_level set to high or low this bug is not
present.

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