[mythtv-users] saa7134 issue

[John Pilkington]

On 11/03/14 22:15, A Desai wrote:
> I am seeing a lot of this in my /var/log/messages:
>
> -------------------------
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: disagrees about version
> of symbol snd_pcm_set_ops
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: Unknown symbol
> snd_pcm_set_ops
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: disagrees about version
> of symbol snd_pcm_hw_constraint_integer
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: Unknown symbol
> snd_pcm_hw_constraint_integer
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: disagrees about version
> of symbol snd_card_create
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: Unknown symbol
> snd_card_create
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: disagrees about version
> of symbol snd_pcm_period_elapsed
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: Unknown symbol
> snd_pcm_period_elapsed
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: disagrees about version
> of symbol snd_pcm_hw_constraint_step
> Mar 11 17:07:41 localhost kernel: saa7134_alsa: Unknown symbol
> snd_pcm_hw_constraint_step
> ----------------------------------
>
>
> Is there something I need to do to fix this?
>
> I tried reading about it and it seems that most say it can either be
> fixed by updating my kernel or getting a newer one from somewhere.
>
> Now updating my system after a year means hoping my QT doesn't give me
> an issue like it does every time I update my CentOS.
>
> Any help is appreciated...
>
> Thanks
>
> Ash
>

This looks like something that I used to see before going almost 
exclusively digital several years ago.  I think it was related to the 
backports needed for kernels that don't provide native device support. 
The 3.10 series kernels from elrepo have worked well for me with 
Scientific Linux 6 (now 6.5) and Qt etc from KDE-unstable, but as Gary 
has said you will need to be careful about mixing packages from, or 
based on, third-party repos.  It's something of a journey into the 
unknown.

Your question about the benefits of updating MythTV really can't be 
answered generally.  Fixes has had 185 updates since 0.27 and presumably 
each was considered worthwhile by its author;  some might have no effect 
at all on your specific pattern of use, while others might be just what 
you never knew you wanted.  I'm at 0.27-178

Good luck!

John P