Bug#452909: hal: there is big regressions about the pmu support

[Matthieu Gallien <matthieu_gallien@yahoo.fr>]

Package: hal
Version: 0.5.10-2
Severity: normal

Due to the last upload of hal, there is regression in the support of pmu.
None of them seems complicated to fix as I was able to find workarounds
without prior knowledge of hal and dbus stuff..

The symptom was that I was no longer able to suspend to ram using kpowersave.
I used qdbusviewer to interacts with hald and also executed hals in a console.
I found that /usr/lib/hal/hal-system-power-pm-is-supported reports to hal that
my computer cannot suspend to ram. This is wrong. Since the regression, I was
able to suspend my computer using:
/usr/lib/hal/hal-system-power-pmu sleep

I believe that /usr/lib/hal/hal-system-power-pm-is-supported should be fixed to
at least say yes when an hal helper is able to do the job.
So I have added:

dbus-send --system --type=method_call --print-reply --dest=org.freedesktop.Hal \
/org/freedesktop/Hal/devices/computer org.freedesktop.Hal.Device.SetPropertyBoolean \
string:'power_management.can_suspend' boolean:true

dbus-send --system --type=method_call --print-reply --dest=org.freedesktop.Hal \
/org/freedesktop/Hal/devices/computer org.freedesktop.Hal.Device.SetPropertyBoolean \
string:'power_management.can_suspend_to_ram' boolean:true

to my /etc/rc.local to enforce hal to believe that my computer can suspend to ram.
Now kpowersave offers the command. Yeah !!!

Second problem, /usr/lib/hal/scripts/linux/hal-system-power-suspend-linux is not
able to suspend to ram my computer. There the problem is that hal apparently only
supports pm-utils. Again, adding those some lines solved the problem:

if [ $HAL_PROP_POWER_MANAGEMENT_TYPE == "pmu" ] ; then
        if [ -x "/usr/lib/hal/hal-system-power-pmu" ] ; then
                /usr/lib/hal/hal-system-power-pmu sleep
                RET=$?
        else
                unsupported
        fi
else
[...]
fi

My computer is an iBook G4 with those informations:
cat /proc/cpuinfo
processor       : 0
cpu             : 7447A, altivec supported
clock           : 666.666000MHz
revision        : 0.2 (pvr 8003 0102)
bogomips        : 36.73
timebase        : 18432000
platform        : PowerMac
machine         : PowerBook6,5
motherboard     : PowerBook6,5 MacRISC3 Power Macintosh
detected as     : 287 (iBook G4)
pmac flags      : 0000001b
L2 cache        : 512K unified
pmac-generation : NewWorld

So I submit this report to debian as I know that other debian users have the
problem. I do not really have time to forward it to hal bug tracking system,
even if I think that the regression is theirs. Do not hesitate to ask for more
informations.

So, I do not know what you can do, but it had to be reported.
Thanks for your work on hal.
Thanks in advance for your attention.

Best regards

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (900, 'unstable'), (500, 'testing'), (2, 'stable'), (1, 'experimental')
Architecture: powerpc (ppc)

Kernel: Linux 2.6.22-2-powerpc
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to fr_FR.UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages hal depends on:
ii  adduser                      3.105       add and remove users and groups
ii  dbus                         1.1.1-3     simple interprocess messaging syst
ii  hal-info                     20071030-1  Hardware Abstraction Layer - fdi f
ii  libc6                        2.6.1-6     GNU C Library: Shared libraries
ii  libdbus-1-3                  1.1.1-3     simple interprocess messaging syst
ii  libdbus-glib-1-2             0.74-1      simple interprocess messaging syst
ii  libexpat1                    1.95.8-4    XML parsing C library - runtime li
ii  libglib2.0-0                 2.14.3-1    The GLib library of C routines
ii  libhal-storage1              0.5.10-2    Hardware Abstraction Layer - share
ii  libhal1                      0.5.10-2    Hardware Abstraction Layer - share
ii  libusb-0.1-4                 2:0.1.12-7  userspace USB programming library
ii  libvolume-id0                0.114-2     libvolume_id shared library
ii  lsb-base                     3.1-24      Linux Standard Base 3.1 init scrip
ii  mount                        2.13-10     Tools for mounting and manipulatin
ii  pciutils                     1:2.2.4-1.1 Linux PCI Utilities
ii  pm-utils                     0.99.2-3    utilities and scripts for power ma
ii  udev                         0.114-2     /dev/ and hotplug management daemo
ii  usbutils                     0.73-4      Linux USB utilities

Versions of packages hal recommends:
ii  eject                         2.1.5-6    ejects CDs and operates CD-Changer

-- no debconf information