[mythtv-users] Mythtv and kernel 2.6.25

[Mario Limonciello]

Paulo Cavalcanti wrote:
> 
> 
> On Sun, Jun 15, 2008 at 8:05 PM, Mario Limonciello
> <mario.mailing at gmail.com <mailto:mario.mailing at gmail.com>> wrote:
> 
>     Alexander Petkov wrote:
>     > Qute:
>     > ================
>     > Hi,
>     >
>     > I am having problems to make mythtv work with kernel 2.6.25
>     (Fedora 8).
>     >
>     > The problem seems to be my capture card, a Prolink Pixelview.
>     >
>     > Myth starts just fine, but the first time I choose LiveTV,
>     > mythfrontend becomes unresponsive. If I press 'esc' to go back,
>     > it takes 30 seg to return to the main menu, and I have to kill the
>     frontend.
>     >
>     > After that, mythbackend can not be restarted or killed (there is a
>     defunct
>     > myth process running).
>     > If I reboot the computer, the partitions are busy (can not be
>     unmounted
>     > cleanly).
>     >
>     > Going back to kernel 2.6.24, everything works just fine. I have
>     been using
>     > this card for years
>     > with myth just fine. I can also play TV using mplayer without any
>     issue on
>     > kernel 2.6.25. <http://2.6.25.>
>     > Therefore, the problem seems to be really the interaction between
>     mythtv and
>     > my card.
>     > ==============
>     > End quote
>     >
>     >
>     > I am experiencing the very same symptoms after upgrading to kernel
>     2.6.25. <http://2.6.25.>
>     > Initally, I get the "Strange error flushing buffer" mesage. Afterwards
>     > I cannot restart the backend. I m using an Avertv and hauppage bttv
>     > cards. Going back to kernel 2.6.24 brings things back to a working
>     > mythtv system.
>     >
>     > Any ideas?
>     >
>     > Alex
>     > _______________________________________________
>     > mythtv-users mailing list
>     > mythtv-users at mythtv.org <mailto:mythtv-users at mythtv.org>
>     > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>     There was a similar issue in a patch related to scheduling on
>     Ubuntu's 2.6.24. <http://2.6.24.>
>     In between ABI bumps from 2.6.24-16 to 2.6.24-17 it got resolved by
>     pulling a patch.
> 
>     I suspect the scheduler for 2.6.25 was pulled into Ubuntu, and then
>     when there
>     was a realization that it was broke, then the patch was added.
> 
> 
> 
> Mario,
> 
> can you point me this patch?
> 
> I would be willing to try it.
> 
> Thanks.
> 
> -- 
> Paulo Roma Cavalcanti
> LCG - UFRJ
Paulo:

There are a few relevant patches I believe, but the biggest thing is make sure
that you are turning on CONFIG_FAIR_CGROUP_SCHED.

-- 
Mario Limonciello
mario.mailing at gmail.com

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