Arnold Krille wrote: > On Monday 27 July 2009 01:36:57 Martin Horn wrote: >> 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. 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 ... > 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@xxxxxxxxxxxxx authenticity, honesty, community _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
