From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 108613] amdgpu.dc=1 + xf86-video-amdgpu: changing to a GPU upscaling resolution resets pp_dpm_mclk Date: Wed, 31 Oct 2018 19:57:05 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1946707478==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id B3F246E342 for ; Wed, 31 Oct 2018 19:57:05 +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 --===============1946707478== Content-Type: multipart/alternative; boundary="15410158250.3Fa1D.7931" Content-Transfer-Encoding: 7bit --15410158250.3Fa1D.7931 Date: Wed, 31 Oct 2018 19:57:05 +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=3D108613 Bug ID: 108613 Summary: amdgpu.dc=3D1 + xf86-video-amdgpu: changing to a GPU upscaling resolution resets pp_dpm_mclk Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: tempel.julian@gmail.com My display doesn't offer upscaling resolutions. However, amdgpu.dc=3D1 + xf86-video-amdgpu does. When I change the resolution from native (2560x1440) to one of those automatically offered upscaling resolutions (e.g. 1920x1080), the value in "/sys/class/drm/card0/device/pp_dpm_mclk" gets set to default. I changed it before like this (to prevent flickering with 75Hz with my display): echo "manual" > /sys/class/drm/card0/device/power_dpm_force_performance_lev= el echo "2" > /sys/class/drm/card0/device/pp_dpm_mclk The VRAM runs with its maximum clock as long as I don't change resolution. = When I change the resolution like described above, the VRAM clock again gets dynamically changed according to load, which introduces nasty flickering in= my case. The desired behavior would be that the change done to pp_dpm_mclk remains untouched when changing to a GPU upscaling resolution. I haven't checked if pp_dpm_sclk is affected as well. Other powerplay/overdrive/fan settings remain untouched by resolution change. Using latest linux-amd-staging-drm-next-wip-git kernel. Xorg session --=20 You are receiving this mail because: You are the assignee for the bug.= --15410158250.3Fa1D.7931 Date: Wed, 31 Oct 2018 19:57:05 +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 108613
Summary amdgpu.dc=3D1 + xf86-video-amdgpu: changing to a GPU upscalin= g resolution resets pp_dpm_mclk
Product DRI
Version DRI git
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter tempel.julian@gmail.com 

My display doesn't offer upscaling resolutions. However, amdgp=
u.dc=3D1 +
xf86-video-amdgpu does.
When I change the resolution from native (2560x1440) to one of those
automatically offered upscaling resolutions (e.g. 1920x1080), the value in
"/sys/class/drm/card0/device/pp_dpm_mclk" gets set to default.

I changed it before like this (to prevent flickering with 75Hz with my
display):

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

The VRAM runs with its maximum clock as long as I don't change resolution. =
When
I change the resolution like described above, the VRAM clock again gets
dynamically changed according to load, which introduces nasty flickering in=
 my
case.

The desired behavior would be that the change done to pp_dpm_mclk remains
untouched when changing to a GPU upscaling resolution.

I haven't checked if pp_dpm_sclk is affected as well. Other
powerplay/overdrive/fan settings remain untouched by resolution change.

Using latest linux-amd-staging-drm-next-wip-git kernel.
Xorg session

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