Re: Mother Board IRQ allocation

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 01/02/2013 12:08 PM, Len Ovens wrote:
I don't know how useful this will be. My MB, an A-bit AC7 (10 years old?),
has the option to turn off IRQs for USB and/or video. My first thought was
that would not be useful, but it turns out what it does is turn of the
bios IRQ selection. This means the Linux kernel has to do this... and the
Linux kernel does a better job of allocating IRQs than the bios does. The
ehci IRQ is now on it's own (USB 2.0) where it used to be lumped on 16
with 4 other things. eth0 has it's own irq too, as do both my audio cards.
I was still able to boot from a USB 2 device as well.

So in the case of finding PCI slots that give solo IRQs, it is worth
playing with the bios settings, even things that do not make sense.

That's interesting! Here I've always thought that it was turning off the IRQ (disabling the device)!

--
David
gnome@xxxxxxxxxxxxx
authenticity, honesty, community
http://clanjones.org/david/
http://dancing-treefrog.deviantart.com/
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@xxxxxxxxxxxxxxxxxxxx
http://lists.linuxaudio.org/listinfo/linux-audio-user


[Index of Archives]     [Linux Sound]     [ALSA Users]     [Pulse Audio]     [ALSA Devel]     [Sox Users]     [Linux Media]     [Kernel]     [Photo Sharing]     [Gimp]     [Yosemite News]     [Linux Media]

  Powered by Linux