>James C. Dastrup wrote: >>> I have a weird problem when i'm watching recordings on my combined >>> frontend/backend. If I'm watching tv on or even a recording from my >>> pvr-500 or 350 while its trying to record a program on the HD-3000 via >>> QAM.. I get a lot of artifacts in the recording. >>> >>> If i were to azap -r channel and watch a recording it goes from LOCKED >>> unlocked LOCKED unlocked LOCKED over and over and over. The CPU is only >>> being used at about 30% during all of this. If I just do azap -r channel >>> without watching anything it is LOCKED all of the time. >>> >>> Anybody have any ideas of how I can track this down and try to fix it? >>> I'm lost with this one. >> >> >> Just one thought, check your interrupts. This has caused problems >> for me in the past. >> >> cat /proc/interrupts >> >> >From the dmesg output, it looks as if you may be sharing >> IRQ's with devices that don't like to be shared. The worst devices I've >> seen that often share and often cause problems are USB adapters and >> NIC's. Don't load the USB drivers if you don't have to. Also, move some >> cards around in the PCI slots if possible. >> >> >This would make sense in that "i only have the problem when sound is >playing back". > >0: 6427484 XT-PIC timer > 1: 10 XT-PIC i8042 > 2: 0 XT-PIC cascade > 4: 9 XT-PIC serial > 5: 110884 XT-PIC ivtv1 > 7: 40564 XT-PIC parport0 > 8: 1 XT-PIC rtc > 9: 1 XT-PIC acpi > 10: 7099603 XT-PIC ivtv0, nvidia > 11: 494167 XT-PIC ivtv2, uhci_hcd:usb1, uhci_hcd:usb2, eth0 > 12: 5256246 XT-PIC cx88[0], EMU10K1, cx88[0] > 14: 3480859 XT-PIC ide0 > 15: 1912283 XT-PIC ide1 >NMI: 0 >LOC: 0 >ERR: 21 >MIS: 0 > > >I guess I should go into the bios and try to somehow shove it on another >interrupt? Is it supposed to show up twice like that?
Suere enough, the evil USB's AND you NIC are on the same IRQ. Also, if possible, disable or don't load your parralel port when you're not using it, which should free up another IRQ, as well as your USB drivers, if you don't use them. My troubels have taught me that you should always have your NIC on it's own IRQ, same with USB. If your BIOS supports assigning IRQ's do that, or you may need to move cards arounds. Many mobo's have an unavoidable relationship between the onboard devices IRQ's and a particular slot, could be any slot, you'll have to move things around to find out which. The frustarting part of this is some IRQ's always go unused, no matter what you do, leaving you less to work with. I don't know whether ivtv or cx88 cards mind if they share IRQ's or not, or if there are other devices that don't mind. If someone else has experience with this, let us know.
<<winmail.dat>>
_______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
