From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 105425] 3D & games produce periodic GPU crashes (Radeon R7 370) Date: Wed, 28 Mar 2018 23:03:05 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1709908369==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id BE7F06E1B2 for ; Wed, 28 Mar 2018 23:03:05 +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 --===============1709908369== Content-Type: multipart/alternative; boundary="15222781850.A85EC8b.30965" Content-Transfer-Encoding: 7bit --15222781850.A85EC8b.30965 Date: Wed, 28 Mar 2018 23:03:05 +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=3D105425 --- Comment #9 from MirceaKitsune --- And we have a verdict. The influential factor is by far the anti-aliasing, = at least in the case of Xonotic. The other cvars I previously mentioned have absolutely no effect on the frequency of this freeze. Today I enabled the feature again and tried playing another match: I instan= tly got two lockups, one after 8 minutes and the other after only 20 seconds! I then disabled it and let the bots play again while I was away: This time the machine froze after more than 2 whole hours of experiencing no issues. I find it interesting how the probability of the freeze seems to scale with= the number of samples: If I use 4x AA ("vid_samples 4"), I get a crash roughly every 30 minutes... if I disable AA ("vid_samples 1"), I get a crash less t= han once per 2 hours... 30 minutes * 4x =3D 2 hours. Maybe this is just me seei= ng patterns but I thought I should suggest the idea. I'd like to hear some thoughts from the developers or experienced users at = this point. Can we close in on the source of this GPU lockup, knowing that Anti Aliasing greatly affects its frequency in Darkplaces engine? Are there any = open bugs about AA related X11 crashes I should check out? What else can I test, ideally still under Xonotic where I have the best test case prepared? --=20 You are receiving this mail because: You are the assignee for the bug.= --15222781850.A85EC8b.30965 Date: Wed, 28 Mar 2018 23:03:05 +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 10542= 5 from MirceaKitsune 
And we have a verdict. The influential factor is by far the an=
ti-aliasing, at
least in the case of Xonotic. The other cvars I previously mentioned have
absolutely no effect on the frequency of this freeze.

Today I enabled the feature again and tried playing another match: I instan=
tly
got two lockups, one after 8 minutes and the other after only 20 seconds! I
then disabled it and let the bots play again while I was away: This time the
machine froze after more than 2 whole hours of experiencing no issues.

I find it interesting how the probability of the freeze seems to scale with=
 the
number of samples: If I use 4x AA ("vid_samples 4"), I get a cras=
h roughly
every 30 minutes... if I disable AA ("vid_samples 1"), I get a cr=
ash less than
once per 2 hours... 30 minutes * 4x =3D 2 hours. Maybe this is just me seei=
ng
patterns but I thought I should suggest the idea.

I'd like to hear some thoughts from the developers or experienced users at =
this
point. Can we close in on the source of this GPU lockup, knowing that Anti
Aliasing greatly affects its frequency in Darkplaces engine? Are there any =
open
bugs about AA related X11 crashes I should check out? What else can I test,
ideally still under Xonotic where I have the best test case prepared?

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