From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 69365] New: vgaswitcheroo crashes when passing "OFF" to the "switch" file Date: Sun, 15 Sep 2013 01:07:31 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1024809053==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 6D68CE5C05 for ; Sat, 14 Sep 2013 18:07:31 -0700 (PDT) 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 --===============1024809053== Content-Type: multipart/alternative; boundary="1379207251.52cf0.1817"; charset="us-ascii" --1379207251.52cf0.1817 Date: Sun, 15 Sep 2013 01:07:31 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=69365 Priority: medium Bug ID: 69365 Assignee: dri-devel@lists.freedesktop.org Summary: vgaswitcheroo crashes when passing "OFF" to the "switch" file Severity: normal Classification: Unclassified OS: Linux (All) Reporter: lbdkmjdf@sharklasers.com Hardware: Other Status: NEW Version: unspecified Component: DRM/Radeon Product: DRI I have an HP laptop with dual AMD graphics cards (radeon HD 6520g + HD 6750M) running Ubuntu 13.10 beta1, kernel 3.11.0-7-generic amd64. This command # echo "OFF" > /sys/kernel/debug/vgaswitcheroo/switch throws a WARNING in the kernel logs, after which the folder /sys/kernel/debug/vgaswitcheroo/ and the dGPU disappear (as noted in the logs) (and power usage is notably lowered, guessing from the temperatures). dmesg: http://pastebin.com/Pb7ELyqP , lines 1196+ Someone else in the #radeon channel also found this report: http://lists.freedesktop.org/archives/dri-devel/2013-September/045157.html which links to another old report from the same person. Thanks. -- You are receiving this mail because: You are the assignee for the bug. --1379207251.52cf0.1817 Date: Sun, 15 Sep 2013 01:07:31 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
Priority medium
Bug ID 69365
Assignee dri-devel@lists.freedesktop.org
Summary vgaswitcheroo crashes when passing "OFF" to the "switch" file
Severity normal
Classification Unclassified
OS Linux (All)
Reporter lbdkmjdf@sharklasers.com
Hardware Other
Status NEW
Version unspecified
Component DRM/Radeon
Product DRI 

I have an HP laptop with dual AMD graphics cards (radeon HD 6520g + HD 6750M)
running Ubuntu 13.10 beta1, kernel 3.11.0-7-generic amd64.
This command
# echo "OFF" > /sys/kernel/debug/vgaswitcheroo/switch
throws a WARNING in the kernel logs, after which the folder
/sys/kernel/debug/vgaswitcheroo/ and the dGPU disappear (as noted in the logs)
(and power usage is notably lowered, guessing from the temperatures).

dmesg: http://pastebin.com/Pb7ELyqP , lines 1196+

Someone else in the #radeon channel also found this report:
http://lists.freedesktop.org/archives/dri-devel/2013-September/045157.html
which links to another old report from the same person.

Thanks.

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