From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 98004] RX470 doesn't reclock memory if a second display has been plugged in at some point Date: Sat, 01 Oct 2016 14:31:01 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1420850124==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 4E0E16E07B for ; Sat, 1 Oct 2016 14:31:01 +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 --===============1420850124== Content-Type: multipart/alternative; boundary="14753322610.d194CE29C.10002"; charset="UTF-8" --14753322610.d194CE29C.10002 Date: Sat, 1 Oct 2016 14:31:01 +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=3D98004 Bug ID: 98004 Summary: RX470 doesn't reclock memory if a second display has been plugged in at some point Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: minor Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: jonathanmoerman@gmail.com If a second display has been plugged in the memory clock gets stuck at the highest frequency, even if the display is disabled (using xrandr) or unplug= ged again. How to reproduce: plug in a second display and either disable it or unplug = it again, the memory will continue to be clocked at its maximal frequency (Her= e: 1750Mhz). Kernels used for testing: Linux 4.4 (amdgpu-pro kernel driver), 4.7, 4.8rc5 The hardware is perfectly capable of clocking back to its lowest frequency = if only one display is actually enabled. (It works as expected in Windows) This issue doesn't cause any problems other than using more watts than necessary. I'm not currently using the system with the RX470 GPU, I'll upload a dmesg = log in a few minutes. I'm sorry if this isn't the correct place to post this bug, I'm new here. --=20 You are receiving this mail because: You are the assignee for the bug.= --14753322610.d194CE29C.10002 Date: Sat, 1 Oct 2016 14:31:01 +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 98004
Summary RX470 doesn't reclock memory if a second display has been plu= gged in at some point
Product DRI
Version unspecified
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity minor
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter jonathanmoerman@gmail.com 

If a second display has been plugged in the memory clock gets =
stuck at the
highest frequency, even if the display is disabled (using xrandr) or unplug=
ged
again.

How to reproduce: plug in a second display and either disable it or unplug =
it
again, the memory will continue to be clocked at its maximal frequency (Her=
e:
1750Mhz).

Kernels used for testing: Linux 4.4 (amdgpu-pro kernel driver), 4.7, 4.8rc5

The hardware is perfectly capable of clocking back to its lowest frequency =
if
only one display is actually enabled. (It works as expected in Windows)

This issue doesn't cause any problems other than using more watts than
necessary.

I'm not currently using the system with the RX470 GPU, I'll upload a dmesg =
log
in a few minutes.

I'm sorry if this isn't the correct place to post this bug, I'm new here.

You are receiving this mail because:
  • You are the assignee for the bug.
= --14753322610.d194CE29C.10002-- --===============1420850124== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlz dHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg== --===============1420850124==--