Subject: Re: Call for testers: ACPI suspend/resume, part 2
To: None <,,>
From: Alan Barrett <>
List: port-amd64
Date: 12/19/2007 22:43:40
On Tue, 18 Dec 2007, Jared D. McNeill wrote:
> Now that the power management framework is merged and things have settled 
> down a bit, now is a great time for you to provide us feedback on results 
> of your suspend/resume tests.

HP/Compaq nc6230 suspends but doesn't resume.

>       # sysctl -w machdep.acpi_vbios_reset=0

I tried both ways.

>       # vbetool post
>     This can either be typed blindly, or scripted.

Doesn't help.

>   * If you can't suspend because a loaded driver doesn't support the PMF,
>     boot into userconf with 'boot -c' and disable those drivers if
>     possible. Even better, send-pr with patches to make them properly
>     capture and restore state.

I had to disable lpt0 in a GENERIC or GENERIC.MP kernel.  In my own custom
kernel, com0 (at acpi), lpt0 (at acpi) and bthub0 (at ubt) all complained
about missing PMF capability.

--apb (Alan Barrett)