4 Aug
2008
4 Aug
'08
7:08 p.m.
Matthew Smith wrote:
<snip/>
In an attempt to fix any latency issues, I have
used the RT-modified
ketchup to get myself a kernel 2.6.25.8-rt7.
<snip/>
> Whilst going from the 'low-latency desktop' of my standard kernel to the
> RT kernel has made a huge difference in the number of xruns that I am
> seeing on Jack, it hasn't cured them completely. <snip>
1) Does anyone have any idea what's going wrong?
2) Does anyone have a .config for a 2.6.24 kernel with the RT patch that
is working well with Jack that they would be willing to share? I guess
that starting from a known-good configuration would be my next logical
step unless anyone can just spot the error.
Cheers
M
Hi, Matthew.
Looking at your /proc/interrupts it appears that your sound card
( HDA intel ? ) is sharing an interrupt with a usb port.
It really it needs one to itself.
Assuming your system uses grub bootloader, as root-user edit the file
/boot/grub/menu.lst and add the following to the kernel line ( try one
at a time and then both ) :
acpi=off
noapic
so that the boot entry looks something like this ( my system ) :
title Debian GNU/Linux, kernel 2.6.24.3-rt3
root (hd0,4)
kernel /boot/vmlinuz-2.6.24.3-rt3 root=/dev/hda5 ro acpi=off noapic
initrd /boot/initrd.img-2.6.24.3-rt3
be aware that this may effect the power management facilities of your
box. for example my desktop box no longer turns itself off on shutdown,
i have to switch it off.
hope this helps, best wishes G.