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 20:37:32 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2097937940==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 7588DFB6D1 for ; Mon, 9 Dec 2013 12:37:32 -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 --===============2097937940== Content-Type: multipart/alternative; boundary="1386621452.4a6F662.15758"; charset="us-ascii" --1386621452.4a6F662.15758 Date: Mon, 9 Dec 2013 20:37:32 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=69723 --- Comment #61 from Alexandre Demers --- (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? -- You are receiving this mail because: You are the assignee for the bug. --1386621452.4a6F662.15758 Date: Mon, 9 Dec 2013 20:37:32 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 61 on bug 69723 from 
(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?

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