In the olden days I would have said IRQ problem, which it still may be. I'd check and see if there is some sort of conflict being related by dmesg.
i guess you are exactly right. Thanks for the pin-point sugestion. dmesg gave me the following error message in the last: ########################################################## irq 5: nobody cared (try booting with the "irqpoll" option) <c043e006> __report_bad_irq+0x36/0x7d <c043e1d4> note_interrupt+0x187/0x1b7 <c043db42> handle_IRQ_event+0x23/0x4c <c043dc0b> __do_IRQ+0xa0/0xd1 <c0405042> do_IRQ+0x70/0x80 <c055a68d> ide_dma_intr+0x58/0x9d <e08f82f1> rhine_interrupt+0x970/0x9b9 [via_rhine] <c04036f2> common_interrupt+0x1a/0x20 <c043db36> handle_IRQ_event+0x17/0x4c <c043dbe7> __do_IRQ+0x7c/0xd1 <c0405035> do_IRQ+0x63/0x80 ======================= <e0fcec29> rm_isr_bh+0x61/0x68 [nvidia] <c04036f2> common_interrupt+0x1a/0x20 <c0420702> __do_softirq+0x2c/0x7f <c040508a> do_softirq+0x38/0x42 ======================= <c0405047> do_IRQ+0x75/0x80 <c04036f2> common_interrupt+0x1a/0x20 <c0512ca1> acpi_safe_halt+0x15/0x1b <c0512e34> acpi_processor_idle+0x137/0x32b <c0401f4d> cpu_idle+0x3a/0x4f <c071f724> start_kernel+0x2d7/0x2db <c071f249> unknown_bootoption+0x0/0x204 handlers: [<c05765b9>] (usb_hcd_irq+0x0/0x4f) Disabling IRQ #5 application firefox-bin uses obsolete OSS audio interface ################################################################## After fresh installation of FC5 I saw this message "Disabling IRQ#5" serveral times (few boots) in my KDE desktop but ignored it. I didn't suspect the sound card that time because I was not using any audio player. Now how to reassign the different IRQ for my sound card? By the way why firefox is involved in this sound problemat the last error message? Thanks
