From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 108917] gamma adjustments cause stuttering with amdgpu.dc=1, especially problematic with RedShift etc. Date: Tue, 19 Mar 2019 16:47:53 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0723357814==" 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 D7FB389A4E for ; Tue, 19 Mar 2019 16:47:53 +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 --===============0723357814== Content-Type: multipart/alternative; boundary="15530140732.F406BCA.3154" Content-Transfer-Encoding: 7bit --15530140732.F406BCA.3154 Date: Tue, 19 Mar 2019 16:47:53 +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=3D108917 --- Comment #9 from Nicholas Kazlauskas --- (In reply to tempel.julian from comment #8) > Unfortunately, Linux 5.0.3 with >=20 > drm: Block fb changes for async plane updates > commit 25dc194b34dd5919dd07b8873ee338182e15df9d >=20 > hasn't changed the situation, as far as I can tell. :( That's the DRM level bugfix for use after free on async updates for plane framebuffer swaps. It actually hurts performance rather than helps it. There's a fix that allows framebuffer swaps again being developed right now with some patches in dri-devel: https://patchwork.freedesktop.org/series/57524/ You'd have to revert "drm/amd/display: Skip fast cursor updates for fb changes" as well though to actually allow this series to work. --=20 You are receiving this mail because: You are the assignee for the bug.= --15530140732.F406BCA.3154 Date: Tue, 19 Mar 2019 16:47:53 +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

Commen= t # 9 on bug 10891= 7 from Nicholas Kazlauskas<= /a> 
(In reply to tempel.julian from comment #8)
> Unfortunately, Linux 5.0.3 with
>=20
> drm: Block fb changes for async plane updates
> commit 25dc194b34dd5919dd07b8873ee338182e15df9d
>=20
> hasn't changed the situation, as far as I can tell. :(

That's the DRM level bugfix for use after free on async updates for plane
framebuffer swaps. It actually hurts performance rather than helps it.

There's a fix that allows framebuffer swaps again being developed right now
with some patches in dri-devel:

https://patchwo=
rk.freedesktop.org/series/57524/

You'd have to revert

"drm/amd/display: Skip fast cursor updates for fb changes"

as well though to actually allow this series to work.

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