I've found an mainline patch that hasn't made its way into the stable kernels and that may fix the issue (without reverting the commit mentioned in comment #37).
Would you be able to test the new kernel I've uploaded in:
Basically, it contains the Precise kernel plus commit bfc89dec97a3db0f14393a86b2fc3d8e13b33c86 ("ALSA: hda/idt - Clean up power-map check code"). Could you also attach the kernel log for this kernel? (You can get the kernel log in /var/log/dmesg after booting the kernel)
I've found an mainline patch that hasn't made its way into the stable kernels and that may fix the issue (without reverting the commit mentioned in comment #37).
Would you be able to test the new kernel I've uploaded in:
http:// people. canonical. com/~henrix/ lp1013183/
Basically, it contains the Precise kernel plus commit bfc89dec97a3db0 f14393a86b2fc3d 8e13b33c86 ("ALSA: hda/idt - Clean up power-map check code"). Could you also attach the kernel log for this kernel? (You can get the kernel log in /var/log/dmesg after booting the kernel)
Thanks!