kern/174504: [ACPI] Suspend/resume broken on Lenovo x220

[Ganael Laplanche]

>Number:         174504
>Category:       kern
>Synopsis:       [ACPI] Suspend/resume broken on Lenovo x220
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Dec 17 07:50:00 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Ganael Laplanche
>Release:        10-CURRENT
>Organization:
http://contribs.martymac.org
>Environment:
FreeBSD laptop.martymac.org 10.0-CURRENT FreeBSD 10.0-CURRENT #2 r231062M: Fri Dec 14 16:08:50 CET 2012     martymac at laptop.martymac.org:/usr/obj/files/Src/sys/GENERIC  amd64
>Description:
Hi,

See this thread :

http://lists.freebsd.org/pipermail/freebsd-current/2012-December/038530.html

and this one :

http://lists.freebsd.org/pipermail/freebsd-current/2012-March/032519.html

Suspend/resume is broken on my Lenovo x220 (amd64) since revision 231797.

To find this regression, I used a kernel patched with KMS patch "all.13.7.patch", as well as the new Xorg and the intel+KMS driver. Suspend/resume breaks at revision 231797 while it works fine until 231796.

To be more precise, suspend does not seem to terminate ; resume make the computer hang.
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: