[Bug 69365] New: vgaswitcheroo crashes when passing "OFF" to the "switch" file

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Sep 14 18:07:31 PDT 2013


          Priority: medium
            Bug ID: 69365
          Assignee: dri-devel at lists.freedesktop.org
           Summary: vgaswitcheroo crashes when passing "OFF" to the
                    "switch" file
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: lbdkmjdf at 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:
which links to another old report from the same person.


You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20130915/39db43a9/attachment-0001.html>

More information about the dri-devel mailing list