Ubuntu
alsa-driver package

  1. Bug #1428121
  2. Comment #50

Comment 50 for bug 1428121

Revision history for this message
In , patrakov (patrakov-linux-kernel-bugs) wrote :

This is not an introduced regression. It is a motherboard (hardware) bug well-hidden by some configuration option that differs in my kernel and in Debian kernel.

I have not yet identified the relevant set of configuration options, but disabling VT-d in the BIOS, or, alternatively, passing intel_iommu=off to the kernel command line allows the hardware to play the first period. Then it hangs (receives no further interrupts) in my kernel and happily continues in the Debian kernel.