IRQ 11 Sharing Issues

digibliss · 11-22-2003, 02:11 PM

Hello, I know you guys here are helpful and will most likely be able to assist me in this problem!

Ok, I installed ALSA, since I was having issues with my SiS7012 card on Red Hat 9. I got it installed and everything working, except the sound seems to stutter.. so I looked at dmesg, and this is what I get from it reguarding the sound drivers:

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PCI: Found IRQ 11 for device 00:02.7 
PCI: Sharing IRQ 11 with 00:0b.0 
intel8x0: clocking to 48000 
Intel 810 + AC97 Audio, version 0.24, 10:11:52 Feb 27 2003

So, I believe ALSA is not the problem, but that IRQ 11 is connected to more then one device.. so I did a:

cat /proc/interrupts

and get the following results:

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           CPU0 
  0:     119688          XT-PIC  timer 
  1:          6          XT-PIC  keyboard 
  2:          0          XT-PIC  cascade 
  5:     198347          XT-PIC  usb-ohci, nvidia 
  8:          1          XT-PIC  rtc 
 11:      53559          XT-PIC  usb-ohci, usb-ohci, ehci-hcd, eth0, SiS SI7012 
 12:      59985          XT-PIC  PS/2 Mouse 
 14:      22663          XT-PIC  ide0 
 15:      11734          XT-PIC  ide1 
NMI:          0 
ERR:          0

My thought is that the reason my sound stutters, and sometime my USB Keyboard freezes is because of the IRQ 11 sharing, could they be fighting with eachother over the IRQ port mapping? This is my diagnosis, not I do not know how to fix this issue, and my BIOS does not allow me to set the IRQ ports.. so I am now lost. I am a Linux

and could use some help.

Thanks a lot, these forums are a real help for those who wish to learn something new.

digibliss · 11-22-2003, 02:56 PM

Also, this may be interesting, It seems that the sound card lists the sharing with 00:0b.0 and using lspci -v I found that the following is listed as 00:0b.0, a dial modem which I dont use:

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00:0b.0 Communication controller: ESS Technology ES2838/2839 SuperLink Modem (rev 01) 
        Subsystem: DIGICOM Systems, Inc.: Unknown device 1052 
        Flags: fast devsel, IRQ 11 
        I/O ports at d000 [size=16] 
        Capabilities: <available only to root>

Any ideas?

digibliss · 11-22-2003, 06:31 PM

I am bumping this thread because this topic is on the top of my list, with the sound and keyboard running astray, I cannot enjoy linux, and I am stuck in Windows, help, if any would be appriciated in advance.. thanks.

digibliss · 11-23-2003, 03:10 PM

Am I going to recieve any help here, I mean, it has been a day since this was originally posted, and it makes me feel as if people are ignoring perfectly valid posts and answering questions on where to buy sound cables...