http://qa.mandrakesoft.com/show_bug.cgi?id=6077
Product: kernel
Component: kernel
Summary: Closing laptop lid freezes kernel (BIOS pm disabled)
Product: kernel
Version: 2.4.22-10mdk
Platform: PC
OS/Version: All
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: kernel
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
As noted in bug #5356 there are problems with ACPI on laptops, but also with
APM. I tried to isolate the problem on my Dell Inspiron 4150. It seems the
problem is not in ACPI or APM at least in my case.
I've used APM successfully with 2.4.21, so I first tried 2.4.22-10mdk acpi=off
apm=on. Closing the lid freezes the system (even SysRq is dead). But doing a
manual pmsuspend2 or apm --suspend works just fine.
I proceeded to test without ACPI, APM and BIOS power management support. Here's
a description of my testing procedure:
- disabled all power management in the BIOS (version A05)
- disabled SpeedStep
- set Display Close to "Active" (shouldn't suspend when lid closed)
- disabled the acpid and apmd services
- tested 2.4.21 and 2.4.22 with acpi=off apm=off, booting to console without X
Results when closing and re-opening the lid:
2.4.21: as expected, no effect; system is still functional
2.4.22: system freezes, console display still visible, cursor blinks, keyboard
and mouse dead, even SysRq doesn't work
I also tried the noapic option suggested in another bug report, but it didn't
affect the results.
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