From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 101565] Intermittent graphical corruption since "radeonsi: don't emit partial flushes at the end of IBs (v2)" (c9040dc9) Date: Fri, 23 Jun 2017 14:03:45 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2107301400==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 8DD126E786 for ; Fri, 23 Jun 2017 14:03:45 +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 --===============2107301400== Content-Type: multipart/alternative; boundary="14982266250.A4dbcFD.4123"; charset="UTF-8" --14982266250.A4dbcFD.4123 Date: Fri, 23 Jun 2017 14:03:45 +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=3D101565 Bug ID: 101565 Summary: Intermittent graphical corruption since "radeonsi: don't emit partial flushes at the end of IBs (v2)" (c9040dc9) Product: Mesa Version: git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: greg@chown.ath.cx QA Contact: dri-devel@lists.freedesktop.org Created attachment 132156 --> https://bugs.freedesktop.org/attachment.cgi?id=3D132156&action=3Dedit Example of graphical corruption Commit c9040dc9 seems to cause graphical corruption on VI for me. It looks = like some caching issue, since the corruption is intermittent and mostly appears only for a single frame. Maybe some assumptions made about the kernel's handling of IBs aren't true? I can trigger issues reliably by running some OpenCL load in the background (for instance, an Ethereum miner). That will make X (glamor) and gnome-shell rendering glitch randomly with high probability. Reverting the commit fixes the problem completely. Attached is a screenshot, showing what kind of artefacts I encounter. (Using the screenshot tool doesn't work as it'll rerender everything before captur= e) --=20 You are receiving this mail because: You are the assignee for the bug.= --14982266250.A4dbcFD.4123 Date: Fri, 23 Jun 2017 14:03:45 +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 101565
Summary Intermittent graphical corruption since "radeonsi: don't= emit partial flushes at the end of IBs (v2)" (c9040dc9)
Product Mesa
Version git
Hardware Other
OS All
Status NEW
Severity normal
Priority medium
Component Drivers/Gallium/radeonsi
Assignee dri-devel@lists.freedesktop.org
Reporter greg@chown.ath.cx
QA Contact dri-devel@lists.freedesktop.org 

Created attachme=
nt 132156 [details]
Example of graphical corruption

Commit c9040dc9 seems to cause graphical corruption on VI for me. It looks =
like
some caching issue, since the corruption is intermittent and mostly appears
only for a single frame. Maybe some assumptions made about the kernel's
handling of IBs aren't true?

I can trigger issues reliably by running some OpenCL load in the background
(for instance, an Ethereum miner). That will make X (glamor) and gnome-shell
rendering glitch randomly with high probability.

Reverting the commit fixes the problem completely.

Attached is a screenshot, showing what kind of artefacts I encounter. (Using
the screenshot tool doesn't work as it'll rerender everything before captur=
e)

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