FW: [Bug 194897] New: acpi_cpufreq prevents suspend (Could not power down device <NULL>)

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-----Original Message-----
From: bugzilla@xxxxxxxxxx [mailto:bugzilla@xxxxxxxxxx] 
Sent: Monday, June 12, 2006 1:34 PM
To: davej@xxxxxxxxxx
Subject: [Bug 194897] New: acpi_cpufreq prevents suspend (Could not
power down device <NULL>)

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https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=194897

           Summary: acpi_cpufreq prevents suspend (Could not power down
                    device <NULL>)
           Product: Fedora Core
           Version: fc5
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: normal
         Component: cpuspeed
        AssignedTo: davej@xxxxxxxxxx
        ReportedBy: sitsofe@xxxxxxxxx
   Estimated Hours: 0.0


Description of problem:
Attempts to suspend some desktops we have were being vetoed my a
mysterious
device <NULL>. Iterative investigation traced it to the acpi_cpufreq
module as
loaded by the cpuspeed initscript.

Version-Release number of selected component (if applicable):
cpuspeed-1.2.1-1.33

How reproducible:
Reproducible every time.

Steps to Reproduce:
1. Boot computer to runlevel 1.
2. Run pm-suspend.
  
Actual results:
Computer turns off monitor and disk then turns them straight back on
again.
Following message is in the logs:
Jun  5 18:10:23 x kernel: Shrinking memory... done (29166 pages freed)
Jun  5 18:10:23 x kernel: pnp: Device 00:08 disabled.
Jun  5 18:10:23 x kernel: pnp: Device 00:07 disabled.
Jun  5 18:10:23 x kernel: skge eth0: disabling interface
Jun  5 18:10:23 x kernel: Class driver suspend failed for cpu0
Jun  5 18:10:23 x kernel: Could not power down device <NULL>: error -22
Jun  5 18:10:23 x kernel: Some devices failed to power down, aborting
suspend

Expected results:
Computer to stay powered down until ACPI wake up event (e.g. mouse,
keyboard,
RTC etc).

Additional info:
Using:
modprobe -r acpi_cpufreq
allows the suspension to happen successfully. Atempting to disable the
cpuspeed
initscript using
/sbin/chkconfig cpuspeed off
left it on in runlevel 1.

The contents of /proc/acpi/processor/CPU0/throttling is:
state count:             2
active state:            T0
states:
   *T0:                  00%
    T1:                  50%

That is the only CPU in the machine. The BIOS is the last revision
available to
the best of my knowledge. Motherboard is a GA-7DX+ (with a VIA chipset)
according to dmidecode. Probably dates from around 2002.

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