Re: [Bugme-new] [Bug 12690] New: DPMS (LCD powersave, poweroff) don't work

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

Help.

On Wed, 11 Feb 2009 09:40:40 -0800 (PST)
bugme-daemon@bugzilla.kernel.org wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=12690

           Summary: DPMS (LCD powersave, poweroff) don't work
           Product: Power Management
           Version: 2.5
     KernelVersion: 2.6.28.4
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: power-management_other@kernel-bugs.osdl.org
        ReportedBy: akolisek@linuxx.hyperlinx.cz


Latest working kernel version: 2.6.27.X
Earliest failing kernel version: 2.6.28.X
Distribution:Slackware 12.2 (current)
Hardware Environment: Lenovo 3000 C100 (i915GM)
Software Environment:  
Problem Description: If I boot on my PC linux-2.6.28.X LCD powerdown isn't
functional.

Steps to reproduce:
If I set "setterm -blank 5 -powerdown on, setterm -powerdown 15" it goes only
LCD blanking but powerdown isn't functional. In the X (x11-xorg + KDE4.2) I set
xset +dpms
xset dpms force off
DPMS don't work too.

We seem to have a DPMS-related regression here and I don't even know 
which subsystem might have caused the breakage.  (iow: who do I blame? ;))

Thanks.