From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 108379] high idle power consumption Date: Tue, 16 Oct 2018 03:37:54 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0794497093==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id EA5996E188 for ; Tue, 16 Oct 2018 03:37:53 +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 --===============0794497093== Content-Type: multipart/alternative; boundary="15396610730.5ea7cFf.15647" Content-Transfer-Encoding: 7bit --15396610730.5ea7cFf.15647 Date: Tue, 16 Oct 2018 03:37:53 +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=3D108379 Bug ID: 108379 Summary: high idle power consumption Product: DRI Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: grmat@sub.red system: - Polaris10 (Ellesmere) - Linux 4.18.14 - WQHD (2560*1440 pixels) monitor with 144 Hz (DisplayPort) expected behaviour: GPU power states should be lowered to the minimum states while idling to sa= ve power, heat and noise. actual behaviour: - DC on (default): GPU stuck at highest SCLK DPM state, power consumption as per amdgpu_pm_i= nfo is ~24 Watts - amdgpu.dc=3D0: MCLK stuck at high DPM state, power consumption as per amdgpu_pm_info is = ~26 Watts - Windows: correct (lowest) SCLK/MCLK DPM states, measured power consumption is ~16 Watts lower compared to Linux Note: https://bugzilla.kernel.org/show_bug.cgi?id=3D201275 fixed a regressi= on causing *additional* power draw (SCLK and MCLK both at max, power consumpti= on at ~38 Watts while idling). I can't tell if it's a regression as I've just recently got the GPU. Random= ly tested kernels from within 4.17 to 4.18.14 all suffer from this issue. --=20 You are receiving this mail because: You are the assignee for the bug.= --15396610730.5ea7cFf.15647 Date: Tue, 16 Oct 2018 03:37:53 +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 108379
Summary high idle power consumption
Product DRI
Version unspecified
Hardware Other
OS All
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter grmat@sub.red 

system:
- Polaris10 (Ellesmere)
- Linux 4.18.14
- WQHD (2560*1440 pixels) monitor with 144 Hz (DisplayPort)

expected behaviour:
GPU power states should be lowered to the minimum states while idling to sa=
ve
power, heat and noise.

actual behaviour:
- DC on (default):
  GPU stuck at highest SCLK DPM state, power consumption as per amdgpu_pm_i=
nfo
is ~24 Watts

- amdgpu.dc=3D0:
  MCLK stuck at high DPM state, power consumption as per amdgpu_pm_info is =
~26
Watts

- Windows:
  correct (lowest) SCLK/MCLK DPM states, measured power consumption is ~16
Watts lower compared to Linux


Note: http=
s://bugzilla.kernel.org/show_bug.cgi?id=3D201275 fixed a regression
causing *additional* power draw (SCLK and MCLK both at max, power consumpti=
on
at ~38 Watts while idling).

I can't tell if it's a regression as I've just recently got the GPU. Random=
ly
tested kernels from within 4.17 to 4.18.14 all suffer from this issue.

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