[alsa-devel] "modprobe snd_hda_intel" crashes on my hardware

Clemens Ladisch clemens at ladisch.de
Wed Sep 28 17:01:15 CEST 2011

Abdelghani Ouchabane wrote:
> in /proc/asound/card0/codec#2
> system 1 : Subsystem Id: 0x7fafffdd
> system 2 : Subsystem Id: 0xffffffff
> system 3 : Subsystem Id: 0xff7f7fa3
> Why the "Subsystem Id" is different between the three systems?

This is a HDA codec register that should be initialized by the BIOS.
Apparently, yours doesn't, and the register contents are somewhat random.

Bug whoever is responsible for that BIOS.  A system not initializing
the pin config and subsystem registers is a violation of the HDA


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