27 Jul
2009
27 Jul
'09
3:56 a.m.
Arnold Krille wrote:
On Monday 27 July 2009 01:36:57 Martin Horn wrote:
Well, if the OP has an Intel chipset - practically everything could be
sharing an interrupt with the graphics. ;-)
More important to know which internal HUB the laptop's USB ports are
hooked to. My Toshiba laptop has 3 USB ports but only 2 USB internal
hubs ...
I try to run xwax on ubuntustudio 8.10 on a
Panasonic CF-T2 subnotebook
(1Ghz/512MB). Everytime I start real time audio apps like jack the graphic
gets very slow and freezes for some seconds, also the audio playback is
like timestretched and sounds filtered.
I guess it has something to do with interrupts shared by graphic and sound
(sound comes from a Maya44 USB sound card).
Can anybody give me a hint how to check or alter interrupt settings or do
you have any other ideas...?!
Most computers have more then one usb port. And these usb ports sit on
different irq's, I doubt it that all of them are shared with the graphics. How do you know which usb port uses which irq?
Check the output of "lsusb" and "cat /proc/interrupts" to see where
you audio-
device is connected and which irq that port has.
I had similar-sounding problems with my UCA202 USB sound card when I was
running it as USB device #7 on a powered external 7-port USB2 hub.
Problem went away when I hooked it directly to a port on the laptop.
--
David
gnome(a)hawaii.rr.com
authenticity, honesty, community