[mythtv] [mythtv-commits] Ticket #5356: Internal DVD playback segfaults using multiple cores.

[John]

MythTV wrote:
> #5356: Internal DVD playback segfaults using multiple cores.
> --------------------+-------------------------------------------------------
>  Reporter:  john    |        Owner:  awithers  
>      Type:  defect  |       Status:  closed    
>  Priority:  minor   |    Milestone:  unknown   
> Component:  mythtv  |      Version:  0.21-fixes
>  Severity:  medium  |   Resolution:  worksforme
>   Mlocked:  0       |  
> --------------------+-------------------------------------------------------
> Changes (by skamithi):
>
>   * status:  new => closed
>   * resolution:  => worksforme
>   * component:  mythvideo => mythtv
>
>
> Comment:
>
>  traceback appears to be on mmx functions.  I think this is a system
>  problem. perhaps your kernel is not configured correctly or mythtv is not
>  compiled with the correct options. i have a dual-core frontend and dual
>  core dev laptop. both of which have no issues when i select cpu = 2, and
>  this is my default setting.
>
>  unless someone else reports the same issue, i'm going to mark this as a
>  worksforme.  I had problems once on my dual core frontend when I compiled
>  mythtv with the pentiumpro option by mistake instead of pentium4 (32bit
>  kernel). opengl vsync stopped working properly causing all sorts of hangs
>  and lockups. when i compiled it with the correct cpu type, everything
>  works like a champ.
>
>   
Before you close this out, the fault is seen on vanilla ubuntu packages, 
on default mythbuntu installs,  as well as the svn build of 0.21-fixes I 
used to generate the backtrace. I see the same thing on both of my dual 
core machines (both e4300), all using default setups, apart from the cpu 
=2 setting. I have no problems playing back BBC-HD, or any other SD 
recordings, but I am seeing this on some but not all DVD isos.

Thanks for looking at it.