Re: Potentially dead bttv cards from 2.6.10

James Bruce
2005-03-01T06:42:28Z

Thanks for the hints. Unfortunately the cards in question really are
fairly generic and thus don't appear in the list. I tried the first 75
cards as insmod options (using a script of course), and some of them are
different, but none work properly.

I am lucky in that I still have a spare. If you could suggest a very
well tested kernel for bttv (2.6.9?), I can set up another machine with
that kernel and the remaining card. That should allow me to isolate the
problem better. At the very least I could get the right card= option
to use for the broken pair. Hopefully I will be able to generate a
table entry for this card for bttv-cards.c; I'll look some more at this
tomorrow.

I've heard that there is some way to dump eeproms; Is there a way to
write them also? If I could copy the eeprom from the unused cards to
the (now broken) pair that might fix things.

Thanks,
Jim

Gerd Knorr wrote:
> James Bruce <bruce@andrew.cmu.edu> writes:
>
>>Well, are there any theories as to why it would work flawlessly, then
>>after a hard lockup (due to what I think is a buggy V4L2 application),
>>that the cards no longer work?
>
> No idea why the eeprom doesn't respond any more. Maybe it's really
> broken. Note that the eeprom is read only at insmod time (and even
> that for some cards only), thus there isn't a clear connection between
> the crash and the eeprom issue. It could have died earlied unnoticed.
>
> The eeprom holds the PCI Subsystem ID, so without a working eeprom
> bttv can't figure automatically what exact card that is (see the
> "unknown/default" card name in the log) and maybe thats why does not
> work any more for the card in question. Thats should be easily
> fixable using the card= insmod option.
>
> Gerd