From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 67178] discrete radeon HD 6400M/7400M intense heating even though it's "off" Date: Mon, 22 Jul 2013 20:43:00 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0638616044==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 48949E5CCE for ; Mon, 22 Jul 2013 13:43:00 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0638616044== Content-Type: multipart/alternative; boundary="1374525780.d1A00.1689"; charset="us-ascii" --1374525780.d1A00.1689 Date: Mon, 22 Jul 2013 20:43:00 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=67178 --- Comment #2 from Tomas Pospisek --- So if I boot with "radeon.dpm=1" then, as allready described, the laptop uses "relatively little" power, and is faning off some heat continuously, even when I set: # echo "battery" > /sys/class/drm/card1/device/power_dpm_state Whether I do the following does *not* seem to matter: # echo IGD > /sys/kernel/debug/vgaswitcheroo/switch # echo OFF > /sys/kernel/debug/vgaswitcheroo/switch But if I boot *without* "radeon.dpm=1" then the laptop will stay cool without fans running out of the box using around 14W. The various settings will show this then: # cat /sys/class/drm/card1/device/power_method dpm # cat /sys/class/drm/card1/device/power_profile default # cat /sys/class/drm/card1/device/power_dpm_state balanced Weird that power_method would show "dpm" even though I have booted *without* "radeon.dpm=1" ?! When I then set: # echo "battery" > /sys/class/drm/card1/device/power_dpm_state Power consumption will drop even further to ~11W. The overal logic of all of this is evidently completely escaping me... 8-o -- You are receiving this mail because: You are the assignee for the bug. --1374525780.d1A00.1689 Date: Mon, 22 Jul 2013 20:43:00 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 2 on bug 67178 from 
So if I boot with "radeon.dpm=1" then, as allready described, the laptop uses
"relatively little" power, and is faning off some heat continuously, even when
I set:

  # echo "battery" > /sys/class/drm/card1/device/power_dpm_state

Whether I do the following does *not* seem to matter:

  # echo IGD > /sys/kernel/debug/vgaswitcheroo/switch
  # echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

But if I boot *without* "radeon.dpm=1" then the laptop will stay cool without
fans running out of the box using around 14W.

The various settings will show this then:

  # cat /sys/class/drm/card1/device/power_method
  dpm
  # cat /sys/class/drm/card1/device/power_profile
  default
  # cat /sys/class/drm/card1/device/power_dpm_state
  balanced

Weird that power_method would show "dpm" even though I have booted *without*
"radeon.dpm=1" ?!

When I then set:

  # echo "battery" > /sys/class/drm/card1/device/power_dpm_state

Power consumption will drop even further to ~11W.

The overal logic of all of this is evidently completely escaping me... 8-o

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