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modprobe error -22 on bt878 card
http://forums.linhes.org/viewtopic.php?f=2&t=15431		 Page 1 of 1
Author:  ffrr [ Thu May 31, 2007 1:36 am ]
Post subject:  modprobe error -22 on bt878 card
Still trying to solve a problem in R5E50 where I have been using 2 DVB cards for a long time, and now one is not working. The /dev/dvb directory only shows one adapter even though lspci sees the card. See this thread for more info http://mysettopbox.tv/phpBB2/viewtopic.php?t=15418

I have found an error in the logs that looks like it could be related, and I wanted to ask about it specifically. Is it normal (doesn't look like it) and what does it mean? How should I fix it?


Code:
May 31 17:01:44 mythtv kernel: bttv0: Bt878 (rev 17) at 0000:00:14.0, irq: 5, latency: 32, mmio: 0xe8001000
May 31 17:01:44 mythtv kernel: bt878: AUDIO driver version 0.0.0 loaded
May 31 17:01:44 mythtv kernel: bt878: Bt878 AUDIO function found (0).
May 31 17:01:44 mythtv kernel: bt878_probe: card id=[0x1fefe], Unknown card.
May 31 17:01:44 mythtv kernel: bt878: probe of 0000:00:14.1 failed with error -22


and also

Code:
dmesg|grep 878
bttv0: Bt878 (rev 17) at 0000:00:14.0, irq: 5, latency: 32, mmio: 0xe8001000
bt878: AUDIO driver version 0.0.0 loaded
bt878: Bt878 AUDIO function found (0).
bt878_probe: card id=[0x1fefe], Unknown card.
bt878: probe of 0000:00:14.1 failed with error -22
Author:  ffrr [ Thu May 31, 2007 5:03 pm ]
Post subject: 
This is not looking good. At this page http://www.linuxtv.org/wiki/index.php/Twinhan_VP-1020A, I find this info about a very similar card with very similar symptoms.

Code:
If your kernel freezes at startup with the following last messages:

bttv0: subsystem: fefe:0001 (UNKNOWN)
bttv0: using: *** UNKNOWN/GENERIC *** [card=0,autodetected]

This means your card's eeprom has been corrupted. The card takes it subsystem id from this eeprom, fefe:0001 is an unknown id, which makes the bttv driver hang. Due to unknown reasons (or cheapness on TwinHan's part) the eeprom is not write protected, and something (maybe a buggy driver?) stomped over it.


It offers a fix, but, at the cheap cost of another card, I think I'll just acquire a conexant card like my other, still working, one, then this won't happen anymore.
Author:  ffrr [ Fri Jun 01, 2007 6:32 pm ]
Post subject: 
That was it. Putting in a new TV card has it all working again. I guess people should beware of the twinhan cards like the ones mentioned on that web page, and also mine, which was a twinhan mini ter DVB-T card.
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