Red Hat Bugzilla – Bug 91344
SMP machine doesn't power off when told to.
Last modified: 2007-04-18 12:53:53 EDT
Description of problem:
When selecting power off in either desktop or gdm the machine goes all the way
to the disk flush and sais powering down but it doesn't.
Version-Release number of selected component (if applicable):
All kernels shipped with RHL 9.
I can't say for sure but I have an ABIT BP6 mobo with two PIII CPUs.
Steps to Reproduce:
1. Install ABIT BP6 mobo
2. Install RHL9 or RHL8
3. Try to power off with SMP kernel.
The cure for this is simple on my machine. I add an apm=power-off to the kernel
parameters and it works.
I have the same problem on my Fujitsu-Siemens Lifebook E7010 (i815 chipset, P4)
but the apm=power-off doesn't help there.
"The cure for this is simple on my machine. I add an apm=power-off to the kernel
parameters and it works."
Since this crashes on a huge part of the machines out there we can't make this
the default unfortionatly.
On your laptop, does dmesg show that APM is enabled AT ALL ?
dmesg | grep -i apm sais
apm: BIOS version 1.2 Flags 0x1b (Driver version 1.16)
Just to clarify. The laptop bug should be separate from the SMP bug as the
laptop isn't a SMP machine.
I managed to get the laptop to power down. I found no power management in bios
on machine and figured that it must be ACPI only. I recompiled the kernel with
no APM and all ACPI and the machine powers down as expected.
The SMP one we can't fix. The laptop will resolve when ACPI is in a state we are
happy to ship it