Hi Thanks for your response. > 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. Yep, that's HDA Intel. I only use the internal card as somewhere to plug in my headphones - think I might take the driver out of the kernel and just use my external Behringer USB card. > 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 This, unfortunately, is not an option for me :( I have to run ACPI in able to get the system fan to run at full speed - if it doesn't, the whole machine freezes up after about 20 minutes (or less) run time due to what I suspect is the GPU overheating. I'm beginning to seriously regret getting this ThinkPad - Lenovo is ruining them; should have stuck to Toshiba... Cheers M -- Matthew Smith Smiffytech - Technology Consulting & Web Application Development Business: http://www.smiffytech.com/ Personal: http://www.smiffysplace.com/ LinkedIn: http://www.linkedin.com/in/smiffy _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user