[linux-dvb] Re: Twinhan Vision Plus & WinFast DTV1000-T
gunther.mayer at gmx.net
Mon Mar 6 19:59:09 CET 2006
Manu Abraham wrote:
> 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.
@Matt: Can you report "lspci -vvv" for a cold boot (disconnect power
cord for 30 seconds !) without loading the "bttv" module (i.e. disable
automatic load on boot)
Try several times to make sure this is no random effect.
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