From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 106428] reported VDDGFX GPU voltage jumps above set limits in pp_od_clk_voltage when UVD is used for VAAPI/VDPAU Date: Mon, 07 May 2018 13:12:27 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0440314838==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 910E06E3CD for ; Mon, 7 May 2018 13:12:27 +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 --===============0440314838== Content-Type: multipart/alternative; boundary="15256987470.CF73Ada.14251" Content-Transfer-Encoding: 7bit --15256987470.CF73Ada.14251 Date: Mon, 7 May 2018 13:12:27 +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=3D106428 Bug ID: 106428 Summary: reported VDDGFX GPU voltage jumps above set limits in pp_od_clk_voltage when UVD is used for VAAPI/VDPAU Product: DRI Version: unspecified 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 I adjusted my pstates in "/sys/class/drm/card0/device/pp_od_clk_voltage" th= at the GPU voltage should never be above 900 mV: (...) 5: 1126Mhz 880 mV 6: 1180Mhz 890 mV 7: 1209Mhz 900 mV And in normal 3D applications "watch -n 0.5 cat /sys/kernel/debug/dri/0/amdgpu_pm_info" accordingly never reports more than= 900 mV for VDDGFX. But when I play a video in mpv with VAAPI/VDPAU, reported VDDGFX often jump= s to 1100 mV, which clearly is undesired behavior. It sticks again to normal 900= mV as soon as I disable hardware decoding. Now the question is, if the reported voltage is correct (then adjusting pp_od_clk_voltage has a bug) or if the real voltage is just reported wrong (than information in amdgpu_pm_info would be wrong). Happens with both 4.17rc2 and drm-next-4.18-wip. GPU is RX 560. --=20 You are receiving this mail because: You are the assignee for the bug.= --15256987470.CF73Ada.14251 Date: Mon, 7 May 2018 13:12:27 +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 106428
Summary reported VDDGFX GPU voltage jumps above set limits in pp_od_c= lk_voltage when UVD is used for VAAPI/VDPAU
Product DRI
Version unspecified
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 

I adjusted my pstates in "/sys/class/drm/card0/device/pp_=
od_clk_voltage" that
the GPU voltage should never be above 900 mV:

(...)
5:       1126Mhz        880 mV
6:       1180Mhz        890 mV
7:       1209Mhz        900 mV

And in normal 3D applications "watch -n 0.5  cat
/sys/kernel/debug/dri/0/amdgpu_pm_info" accordingly never reports more=
 than 900
mV for VDDGFX.

But when I play a video in mpv with VAAPI/VDPAU, reported VDDGFX often jump=
s to
1100 mV, which clearly is undesired behavior. It sticks again to normal 900=
 mV
as soon as I disable hardware decoding.

Now the question is, if the reported voltage is correct (then adjusting
pp_od_clk_voltage has a bug) or if the real voltage is just reported wrong
(than information in amdgpu_pm_info would be wrong).

Happens with both 4.17rc2 and drm-next-4.18-wip.
GPU is RX 560.

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