[linux-dvb] Re: Twinhan Vision Plus & WinFast DTV1000-T

Manu Abraham abraham.manu at gmail.com
Mon Mar 6 10:35:55 CET 2006


Matt Pratt wrote:
> On 2/27/06, *Matt Pratt* <mattpratt.au at gmail.com 
> <mailto:mattpratt.au at gmail.com>> wrote:
>
>
>     Non-working case:
>
>     bttv0: Bt878 (rev 17) at 0000:02:0c.0, irq: 169, latency: 132,
>     mmio: 0xf9000000
>     bttv0: using:  *** UNKNOWN/GENERIC ***  [card=0,autodetected]
>     bttv0: gpio: en=00000000, out=00000000 in=00fffffe [init]
>
>     Which seems to indicate that the pci_read_config_word() of
>     PCI_SUBSYSTEM_ID and PCI_SUBSYSTEM_VENDOR_ID is failing.
>
>     Does this indicate larger PCI problems, like a conflict between
>     the boards?
>
>     Can some ACPI fiddling help here?
>
>
>
> So even lspci -x was showing that the Subsystem Id and Subsustem 
> Vendor Id were being cleared to zeros in the PCI config space of this 
> card. But only when the two cards were in the machine. No amount of 
> slot swapping seemed to make a difference. Upgrade of motherboard 
> firmware made no difference. noacpi, lacpi, pci=routeirq, pci=noacpi 
> made no difference. Went to the effort of putting the cards into 
> another machine. They just worked. Eventually tried acpi=off (which I 
> thought noacpi would have done the same thing) and they both worked!
>

It all sounds very scary/crazy. If you can get in some logs on that, 
lspci -vvv in both cases would be a bit interesting.


Manu




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