Freebsd 7-stable on Asus Pro31j - suspend and resume

[John Baldwin]

On Saturday 28 June 2008 05:25:29 am Mark Kirkwood wrote:
> I've just seen Christopher's post on the nc6230 suspend and resume - I'm 
> suffering what looks like the same problem with an Asus pro31j:
> 
> 1/ Suspend to S1 and resume works fine
> 2/ Suspend to S3 and resume works *but* I have no video thereafer.
> 
> I've have these set:
> 
> hw.syscons.sc_no_suspend_vtswitch=1
> hw.acpi.reset_video: 1
> 
> 
> plus the ata-resume patch:
> 
> http://people.freebsd.org/~jhb/patches/ata_resume.patch
> 
> I know S3 is resuming ok, as I can ssh in via re0 interface and check 
> the message log:
> 
> Jun 28 14:50:04 zul acpi: suspend to 0x03 at 20080628 14:50:04
> Jun 28 14:53:41 zul kernel: wakeup from sleeping state (slept 00:03:30)
> Jun 28 14:53:43 zul acpi: resumed from 0x03 at 20080628 14:53:43
> 
> (I've patched rc.suspend and rc.resume to log both $subsystem and $state)
> 
> 
> I have not tried setting:
> 
> hw.acpi.video.lcd0.active=1
> 
> as I have no such sysctl oid!

You have to use the acpi_video(4) driver (kldload acpi_device or 'device 
acpi_video').  Your BIOS also has to provide video control via ACPI.

> Any suggestions welcome, and thanks Christopher for raising this!

You can also try http://www.FreeBSD.org/~jhb/patches/dpms.patch (you'll need 
to either add 'device dpms' to your kernel config or build dpms.ko and 
kldload it).  It is a committable version of the old DPMS patch that uses 
VESA DPMS to turn off the monitor on suspend and turn it back on on resume.

-- 
John Baldwin