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 20:01:59 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0897365066==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id BD52EFB96C for ; Mon, 9 Dec 2013 12:01:59 -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 --===============0897365066== Content-Type: multipart/alternative; boundary="1386619319.b8E5FEf2.6919"; charset="us-ascii" --1386619319.b8E5FEf2.6919 Date: Mon, 9 Dec 2013 20:01:59 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=69723 --- Comment #60 from Martin Andersson --- 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. -- You are receiving this mail because: You are the assignee for the bug. --1386619319.b8E5FEf2.6919 Date: Mon, 9 Dec 2013 20:01:59 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 60 on bug 69723 from 
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.

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