At Mon, 04 May 2009 10:26:27 -0500, Guy Stalnaker wrote:
Hello again, Takashi,
Can you think of why a new distribution might be the cause, or a change that a new distribution makes, that would result in such behavior? The new distribution includes a new kernel and a new version of xorg (I think), so everything on top of the hardware is new. What's damned peculiar is that the HTML output interface is always recognized successfully. It's only the Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) on pci 00:14.2 that seems to have this issue.
To add oddity to the issue, I brought the laptop to work this morning and on boot the Audio device was successfully recognized and aplay -l shows it a card 0!!
I wonder ... do you think that it's possible that a keyboard, mouse, printer, or some other USB device plugged into the laptop at boot could affect something like this? That's really the only difference between work and home.
I guess it's an issue with ACPI or core PCI layer. Or suspend, if this happens only after suspend/resume and not after a fresh boot.
In any way, I recommend you to report this on kernel bugzilla.
Takashi