Red Hat Bugzilla – Bug 179682
ALSA broken in 2.6.9-22
Last modified: 2007-11-30 17:07:22 EST
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Description of problem:
Hardware is an MAudio Revolution 7.1 using the ice1724 driver.
aplay produces errors unless I boot with the acpi=off kernel option. However, even with this option I get no sound output. I've checked the mixer and changed the volume still nothing. There are similar bugs like this logged against FC.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
*** Bug 179683 has been marked as a duplicate of this bug. ***
Have you updated to the most recent available BIOS version available for your
motherboard? If not, please do so and post the results of using sound after
the upgrade. Thanks!
This is a relatively old system. The last BIOS update was in 2001.
The solution was (relatively) simple. The sound card was sharing an IRQ with my
ethernet card. I swapped PCI slots and re-enabled ACPI and sound now works as
It doesn't seem like a shared IRQ should completely prevent playing audio, so I
don't know if this is a bug or a limitation of ALSA.
ACPI support in machines of that vintage is notoriously buggy. If your system
works now (or with ACPI disabled), that is probably the best we can do.
I'm glad you got it working!