[linux-dvb] Possible bug in cx88-dvb?

Hanno Zulla abos at hanno.de
Wed Jul 4 16:06:21 CEST 2007


Hi,

> Do you have shared interrupts?  Do a "lspci -v" and have a look there.

Yes, I do have shared interrupts:

http://launchpadlibrarian.net/8036103/lspci-vvnn.log

The DVB card uses irq 23 (which is shared with the mainboard's audio
chip) and it uses irq 10 (not shared with any other card).

http://launchpadlibrarian.net/8283449/lspci-vv.log

Pete's DVB card uses irq 11, which is shared with the mainboard
chipset's usb controller, ide controller and network chip.

> That being said, I don't notice any particular issue when the problem pops
> up.  Perhaps the driver is being too pedantic - after all, that's what
> buffers are for, right?

On my system, there is a visible skip of video output when this shows up
the syslog. Very annoying.

Of course, it is quite possible that the "cx88_wakeup: 2 buffers handled
(should be 1)" problem is not the cause of the skipping. I cannot tell.

> Try swapping your PCI cards around if you have any to spare.....

I did. Didn't help.

I also tried changing PCI latency in the BIOS settings and using
"pci=routeirq" or "pci=noacpi" kernel boot parameters. And I tried a
different kernel.

Those attempts didn't help either.

Thanks,

Hanno



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