From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 69723] GPU lockups with kernel 3.11.0 / 3.12-rc1 when dpm=1 on r600g (Cayman) Date: Mon, 09 Dec 2013 20:43:13 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2009927122==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 2E6C7FB998 for ; Mon, 9 Dec 2013 12:43:13 -0800 (PST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============2009927122== Content-Type: multipart/alternative; boundary="1386621793.C8802.17017"; charset="us-ascii" --1386621793.C8802.17017 Date: Mon, 9 Dec 2013 20:43:13 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=69723 --- Comment #62 from Martin Andersson --- (In reply to comment #61) > (In reply to comment #60) > > Instead of triggering the power level switches by running GpuTest in bursts, > > I put this in a bash script: > > > > for i in {1..3600} > > do > > echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level > > sleep 1 > > echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level > > sleep 5 > > done > > > > and just let GpuTest, and piglit, run continously. I found that this also > > trigger the lockups within minutes. > > > > Then I ran the script by itself, no GpuTest or piglit, and left it running > > while I was at work. When I came home the machine was still running, so it > > ran for six hours without any lockup. So it seems the power level switching > > alone is not sufficient to trigger the lockups, it also needs a load of some > > sort. > > Do you mean while spread spectrum is still enabled? Yes -- You are receiving this mail because: You are the assignee for the bug. --1386621793.C8802.17017 Date: Mon, 9 Dec 2013 20:43:13 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 62 on bug 69723 from 
(In reply to comment #61)
> (In reply to comment #60)
> > Instead of triggering the power level switches by running GpuTest in bursts,
> > I put this in a bash script:
> > 
> > for i in {1..3600}
> > do
> >    echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level
> >    sleep 1
> >    echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
> >    sleep 5
> > done
> > 
> > and just let GpuTest, and piglit, run continously. I found that this also
> > trigger the lockups within minutes.
> > 
> > Then I ran the script by itself, no GpuTest or piglit, and left it running
> > while I was at work. When I came home the machine was still running, so it
> > ran for six hours without any lockup. So it seems the power level switching
> > alone is not sufficient to trigger the lockups, it also needs a load of some
> > sort.
> 
> Do you mean while spread spectrum is still enabled?

Yes

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