[mythtv-users] Excessive log messages from bt878 driver using Nebula card

[Ben]

Justin Hornsby wrote:

> John Winters wrote:
>
>> I'm using a Nebula DVB-T card with the bt878 driver and kernel 2.6.8.
>> When MythTV is recording, the bt878 driver seems to generate several
>> hundred log messages per second, like this:
>>
>> Aug 26 17:04:39 bluebox kernel: bt878(0): irq FDSR risc_pc=1eb84210
>> Aug 26 17:04:39 bluebox last message repeated 523 times
>> Aug 26 17:04:39 bluebox kernel: bt878(0): irq FDSR risc_pc=1eb84010
>>
>> Note - all that in less than a second.
>>
>> Looking at the code for the bt878 driver it appears that turning off
>> "bt878_verbose" might reduce this, but is it normal?  It seems odd to
>> want to produce quite so many log messages.
>>
> <snip!>
>
> I've seen something similar with my DVB-T card - it was then that I 
> realised that I'd not compiled IDE DMA support into the kernel.  The 
> DVB-T card is probably not getting a response to its interrupt quickly 
> enough because the system isn't running quite as it should.
>
> Hope this helps some.
>
> Justin.
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>
I had the same problem with a Dvico fusion lite. Unfortunately Bt878a 
based cards can cause problems, your mileage me vary, I never could 
shake the problem ;(
Check this mailing list post at dtvforum.info
http://www.dtvforum.info/index.php?showtopic=22808&st=0&p=250334&#entry250334 


also google on    irq fbus site:linuxtv.org

Ben