From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 102646] Screen flickering under amdgpu-experimental [buggy auto power profile] Date: Mon, 31 Dec 2018 15:10:41 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0462284251==" 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 EF18F6E708 for ; Mon, 31 Dec 2018 15:10:41 +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 --===============0462284251== Content-Type: multipart/alternative; boundary="15462690416.4f5BAbf.31007" Content-Transfer-Encoding: 7bit --15462690416.4f5BAbf.31007 Date: Mon, 31 Dec 2018 15:10:41 +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=3D102646 --- Comment #62 from Alex Deucher --- (In reply to Scias from comment #60) > I also noticed it doesn't happen if using dual/multiple screens. Looks li= ke > the vram clock is forced to the highest state in this case. Is this a nor= mal > behavior? Yes. Memory reclocking has to happen during the vblank period to avoid flickering. If the vblank period is too short or you have multiple monitors where the vblank periods are not aligned memory cannot be dynamically reclocked. --=20 You are receiving this mail because: You are the assignee for the bug.= --15462690416.4f5BAbf.31007 Date: Mon, 31 Dec 2018 15:10:41 +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

Comme= nt # 62 on bug 10264= 6 from Alex Deucher 
(In reply to Scias from comment #60)
> I also noticed it doesn't happen if using dual/m=
ultiple screens. Looks like
> the vram clock is forced to the highest state in this case. Is this a =
normal
> behavior?

Yes.  Memory reclocking has to happen during the vblank period to avoid
flickering.  If the vblank period is too short or you have multiple monitors
where the vblank periods are not aligned memory cannot be dynamically
reclocked.

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