amd64/153746: kernel crash with 2 X11 sessions on amd64 with radeon drm

[fbsdmail at dnswatch.com]

On Thu, January 6, 2011 2:45 pm, Patrick Mackinlay wrote:
>

>> Number:         153746
>> Category:       amd64
>> Synopsis:       kernel crash with 2 X11 sessions on amd64 with radeon
>> drm
>> Confidential:   no
>> Severity:       non-critical
>> Priority:       medium
>> Responsible:    freebsd-amd64
>> State:          open
>> Quarter:
>> Keywords:
>> Date-Required:
>> Class:          sw-bug
>> Submitter-Id:   current-users
>> Arrival-Date:   Thu Jan 06 22:50:07 UTC 2011
>> Closed-Date:
>> Last-Modified:
>> Originator:     Patrick Mackinlay
>> Release:        8.1-RELEASE-p2 (affects 8.0 as well)
>> Organization:
>> Environment:
>>
> FreeBSD patrick.uknet.spacesurfer.com 8.1-RELEASE-p2 FreeBSD
> 8.1-RELEASE-p2 #3: Thu Jan  6 21:40:18 GMT 2011
> root at patrick.uknet.spacesurfer.com:/usr/obj/usr/src/sys/PATRICK  amd64
>
>> Description:
>>
> If I start 2 X11 sessions (startx and start -- :1). The close the
> sessions on display :1, when I switch to the session on display :0 the
> system reboots. I have an amd64 with a ATI radeon card:
>
> drm0: <ATI Radeon HD 4650> on vgapci0
>
>
> Note that if I never close either X11 session there is no problem with
> stability (weeks uptime), however the only graphics intensive app I use
> is mplayer. mplayer is the only reason I need drm, however the bug will
> be triggered even if I havn't used mplayer in my X11 session.
Greetings,
 Fact is, Mplayer has nothing to do with when/how drm is loaded. 2
possibilities exist for loading; @boot via loader.conf(5), or when
starting X via xorg.conf(5).
If you're loading it via xorg.conf(5), and suspect drm to be the culprit.
The easiest solution would be to comment the line that loads it in your
xorg.conf(5) file. Then startx(1), and see if there's any difference in
behavior. FWIW I haven't been able to use HALd on _any_ 64bit box. So
against the suggested entries in rc.conf(8):
dbus_enable="YES"
hald_enable="YES"

I need to use

hald_enable="NO"
or I have big problems running X. I only mention it, in case this
might also apply to your situation.

HTH

--Chris

>
> I will attach the output from dmesg with my full system setup and the
> output from the two xorg log files.
>> How-To-Repeat:
>>
>
>> Fix:
>>
>
>
>> Release-Note:
>> Audit-Trail:
>> Unformatted:
>>
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-- 
kern:
FreeBSD 8.1-RELEASE amd64