Suspend to ram (S3) fails on Supermicro X10SL7-F.

[drhugin]

Hi *,

I am trying to get suspend to ram (S3) working with my FreeBSD fileserver. After calling
'acpiconf -s 3' the system does not suspsend and dmesg gives me the following error message:

    acpi0: device_suspend failed
    ahcich2: Timeout on slot 25 port 0
    ahcich2: is 00000000 cs 03000000 ss 03000000 rs 03000000 tfd d0 serr 00000000 cmd 0004d817
    (ada2:ahcich2:0:0:0): READ_FPDMA_QUEUED. ACB: 60 08 a2 0d 61 40 03 00 00 00 00 00
    (ada2:ahcich2:0:0:0): CAM status: Command timeout
    (ada2:ahcich2:0:0:0): Retrying command

The motherboard is a Supermicro X10SL7-F with a LSI2308 SAS controller
(http://www.supermicro.com/products/motherboard/Xeon/C220/X10SL7-F.cfm). 
BIOS and LSI Firmware are updated to the current version. FreeBSD version is 10.2-RELEASE-p10.

Suspending (S3) with a arch linux live iso seems to be working correctly.

Can someone help me to get S3 working with FreeBSD, too?

Many thanks,
hugin