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: Wed, 27 Nov 2013 04:30:34 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1055350518==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 8C821FAD73 for ; Tue, 26 Nov 2013 20:30:34 -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 --===============1055350518== Content-Type: multipart/alternative; boundary="1385526634.bbBbbfFB2.26947"; charset="us-ascii" --1385526634.bbBbbfFB2.26947 Date: Wed, 27 Nov 2013 04:30:34 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=69723 --- Comment #43 from Alexandre Demers --- Created attachment 89884 --> https://bugs.freedesktop.org/attachment.cgi?id=89884&action=edit GPU-Z Cayman log playing a Youtube video I used GPU-Z under Windows to monitor mclk, sclk, VDDC and temperature. Temperature was pretty much the same as the one I had under Linux. However, power levels are different. First, under Windows, anytime the memory goes above the default mclk speed (150MHz), VDDC is set to 1.063V even if the GPU is not running at full speed. Under Linux, VDDC is set to 1.060V only if both mclk and sclk are running at full speed. Otherwise, VDDC is kept at 1.000V. Why this difference? Next, there is an intermediate power level where sclk runs at 500MHz and mclk runs at 650MHz with a VDDC at 1.063V. Even when running in 1080p, it never went above that speed. Under Linux, the intermediate power level (power level 1) uses a sclk at 500MHz (same) and mclk at 1300MHz (twice as fast, the same as the maximum power level 2) with only a VDDC of 1.000V. There was no indication about the VDDCI. -- You are receiving this mail because: You are the assignee for the bug. --1385526634.bbBbbfFB2.26947 Date: Wed, 27 Nov 2013 04:30:34 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 43 on bug 69723 from 
Created attachment 89884 [details]
GPU-Z Cayman log playing a Youtube video

I used GPU-Z under Windows to monitor mclk, sclk, VDDC and temperature.
Temperature was pretty much the same as the one I had under Linux.

However, power levels are different.

First, under Windows, anytime the memory goes above the default mclk speed
(150MHz), VDDC is set to 1.063V even if the GPU is not running at full speed.
Under Linux, VDDC is set to 1.060V only if both mclk and sclk are running at
full speed. Otherwise, VDDC is kept at 1.000V. Why this difference?

Next, there is an intermediate power level where sclk runs at 500MHz and mclk
runs at 650MHz with a VDDC at 1.063V. Even when running in 1080p, it never went
above that speed. Under Linux, the intermediate power level (power level 1)
uses a sclk at 500MHz (same) and mclk at 1300MHz (twice as fast, the same as
the maximum power level 2) with only a VDDC of 1.000V.

There was no indication about the VDDCI.

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