On Sat, November 3, 2012 2:40 am, Ralf Mardorf wrote:
I noticed something interesting about kernel
3.6.5-rt14.
spinymouse@qrc:~$ uname -a
Linux qrc 3.5.0-17-lowlatency #18-Ubuntu SMP PREEMPT Tue Oct 9 20:04:43
UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
spinymouse@qrc:~$ /etc/init.d/rtirq status | grep radeon
768 FF 50 - 90 0.0 S irq/18-radeon
spinymouse@qrc:~$ /etc/init.d/rtirq status | grep irq/18
777 FF 85 - 125 0.0 S irq/18-snd_hdsp
56 FF 78 - 118 0.0 S irq/18-ohci_hcd
58 FF 77 - 117 0.0 S irq/18-ohci_hcd
768 FF 50 - 90 0.0 S irq/18-radeon
spinymouse@qrc:~$ uname -a
Linux qrc 3.6.5-rt14 #1 SMP PREEMPT RT Fri Nov 2 21:36:37 CET 2012
x86_64 x86_64 x86_64 GNU/Linux
spinymouse@qrc:~$ /etc/init.d/rtirq status | grep radeon
807 FF 50 - 90 0.0 S irq/43-radeon
spinymouse@qrc:~$ /etc/init.d/rtirq status | grep irq/18
832 FF 85 - 125 0.0 S irq/18-snd_hdsp
58 FF 78 - 118 0.0 S irq/18-ohci_hcd
60 FF 77 - 117 0.0 S irq/18-ohci_hcd
Unfortunately it didn't solve xrun issues for the RME card. However,
the kernel does switch to another IRQ for the graphics, for all other
kernels on different distros, the graphics always gets IRQ18, also if I
switch the integrated ATI with a Nvidia.
Thats strange.
In any case, I would work at getting your hdsp off of irq18. Put it in a
different slot whatever. It made a difference for my stuff in terms of
xruns or not.
--
Len Ovens
www.OvenWerks.net