Adam: I can confirm the behaviour you describe (loss of sound after timeout when using power_save) with kernels before May (e.g. 2.6.22). The problem seems to have been fixed in later 2.6.26 kernels.
Adam:
I can confirm the behaviour you describe (loss of sound after timeout when using power_save) with kernels before May (e.g. 2.6.22). The problem seems to have been fixed in later 2.6.26 kernels.