[linux-dvb] bt878(0): IRQ lockup, cleared int mask

Hamish Moffatt hamish at cloud.net.au
Mon Aug 1 00:55:51 CEST 2005

On Sun, Jul 31, 2005 at 09:56:56PM +0100, Matt wrote:
> David Johnson wrote:
> >On Sunday 31 July 2005 14:19, Hamish Moffatt wrote:
> >>Getting errors was as simple as
> >>tzap -r 'some channel' &
> >>cat /dev/dvb/adapter0/dvr0 > /path/to/sata/disk/file
> >
> >Yeah, that exactly the same behaviour I'm seeing.
> >So that's at least two SATA modules which conflict with bt878... strange. 
> >Is anyone using a bt878 card in a machine with SATA and /not/ having 
> >problems?
> >
> I do not have SATA in my machine and it works ok (with a kernel tweak), 
> the reason why I get so many errors is because the reception around here 
> is not great. By the way the 120 errors is in a row I think.

I don't see how poor reception could cause FDSR errors - the BT878 isn't
aware that the data you are transferring is corrupt.

One possibility is that your application software is writing to a log
file every time a corrupt packet is received. MythTV used to do that. I
suspect that hard disk activity contributes to the 878's problems.

Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>

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