I have done some research on this problem and I believe the following info may be helpful in narrowing this problem down.
I believe the problem is related to interrupts. Creative Labs claims they think the problem is errant bias voltages on the circuit boards but the noise only begins as the operating system finishes loading and starts polling devices. a bad voltage would be there whether the OS is running or not. If you shut the system down to the BIOS menus there is no noise. I have played around with interrupts in the BIOS and am able to prevent the noise by reserving the interrupt that was assigned to the board on the previous boot-up. For some reason, the board then gets a soft-IRQ typically IRQ=23. In that case there is a brief flurry of pops during the boot up and then absolutely clear sound after that no matter what sound apps are running. -- Popping or clicking sound in Audigy 4 https://bugs.launchpad.net/bugs/464949 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
