[mythtv] ivtv driver stop responding (Solution?)

[Karm may]

I am posting this to both to the ivtv board and to the
mythtv board so that if others are having the same
problem they can see my work around.

Symptoms:
My mythbox have been plague with the ivtv driver not
responding after the mythbox had been up for less then
24 hours.  If I go to watch live TV I would see the
dread black screen.  Mythfrontend would state that it
could not connect to the mythbackend.  The mythbackend
was still running.  At that point I could not watch
previous recordings because the frontend would state
unable to connect to backend.  Rebooting was so common
that when my 2 year old wanted to watch one of his
shows, he was no longer bring me the remote but the
keyboard...

Log Entries:
I start to try to determine why the myth box was so
unstable.  The first thing I notice was
"dmesg:spurious 8259A interrupt: IRQ7."  Well
according to some searches that I did this was
"normal", because it was relate to the printer port. 
The interesting thing was that I had my
printer/parallel port disables.  I then seen these
entries:
kernel: irq 7: nobody cared (try booting with the
"irqpoll" option.
pvr kernel:  [<c013e0a0>] __report_bad_irq+0x2b/0x68
kernel:  [<c013e169>] note_interrupt+0x73/0x96
kernel:  [<c013d6cc>] __do_IRQ+0x1bd/0x249
Mar 11 06:37:33 pvr kernel:  [<c0104e04>]
do_IRQ+0x5e/0x7a
kernel:  =======================
kernel:  [<c01035b2>] common_interrupt+0x1a/0x20
kernel:  [<c010103b>] default_idle+0x23/0x29
kernel:  [<c010108f>] cpu_idle+0x1f/0x34
kernel:  [<c03a5665>] start_kernel+0x16b/0x16d
kernel: handlers:
kernel: [<de950b83>] (ivtv_irq_handler+0x0/0x5b6 
ivtv])
kernel: Disabling IRQ #7
**************************************************

I also notice that when I did "lspci -v" that my
pvr-250 was using IRQ 7

*** SOLUTION ****
NOT GOOD TO DISABLE THE IRQ 7 ON THE PVR CARD...
So I went in the BIOS->"PCI Settings" and set the IRQ
specifically to 3 for my pvr 250 and IRQ 4 for my
pvr-350.

Conclusion:
I have been up for 3 days without a reboot.  My 2 year
old is now starting bring me the remote once again.
;-)

** QUESTIONS ***
Why was the kernel "disabling" the PVR card?
Is IRQ 7 supposed to be only used by parallel port
operations?



	
		
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