Comment 51 for bug 149665

My short experience of ubuntu is almost satisfying, mainly because I'm learning a lot about my OS.
But looking the huge number of post, and the variety of their subject, I'm quite affraid for my hardware (power management, hard disk..).

To summarize : the power management doesn't work well with gutsy + kernel 2.6.22,
I give you some detail in the following, comparing how it works with feisty and gutsy

My laptop is a Lenovo 3000 C200 8922AZG

I have first intalled Feisty with kernel 2.6.20-15 and then 2.6.20-16 without problems :
- wifi proprietary driver works with ndiswrapper
- sound chipset driver has to be install manualy with realtek add-on.
- special buttons and power management (sleep/hibernation/resume) works well

I try migration from Feisty to Gutsy but I encountered some problems :
- first a freeze of the installation with alternate CD, so I use network install
And with kernel 2.6.22 :
- conflict between nidiswrapper installation and the new management of proprietary driver.
- the main problem is the power management
One or two times, after entering in sleep mode, the system doesn't resume but goes into hybernation... After wake up (with power button), the "half moon" diode continue to light even after entering gnome session...
BUT with the 2.6.20 kernel : the power management works normally.

NOW, with a clean installation of Gutsy, using desktop CD :
- the sound (integrated Intel HDA realtek) works directly and seems to works normally (headphone mic...).
BUT : the chipset caracteristics are not the same under Feisty (ALC862) and Gutsy (ALC861VD) !!

- the wifi proprietary driver works with bcm43xx-cutter
BUT : the hard switch desactivate the connection but doesn't stop lightening

- with both AC or battery supply : after entering in sleep or hibernation mode it's impossible to resume normally. I'm obliged to shutdown using the power button.
This point is the most important : it was working well with kernel 2.6.20 (Gutsy or Feisty) so I think that the 2.6.22 kernel is in cause...;

There is one bug in the syslog which present with kernel 2.6.22 and was not with kernel 2.6.20 :
[ 0.000000] ACPI: BIOS bug: multiple APIC/MADT found, using 0

and other lines looks strange (I do understand nothing!!):
[ 0.000000] ACPI: If "acpi_apic_instance=2" works better, notify <email address hidden>
[ 15.534057] ACPI: Looking for DSDT in initramfs... error, file /DSDT.aml not found.
[ 18.289957] Failure registering capabilities with primary security module.
[ 18.311924] ACPI Exception (processor_core-0783): AE_NOT_FOUND, Processor Device is not present [20070126]
[ 18.319217] ACPI Exception (thermal-0400): AE_NOT_FOUND, Invalid active threshold [0] [20070126]

I also notice that powernowd doesn't works (I'm cheking, but I suppose it's the same cause)

I don't no what to do to make hardware working properly (compile or change(?) kernel ??..)

I apologize for my poor english (I'm a Fu... Froggy!!, funny?)

Could you to solve this hardware problems, and Ubuntu Gutsy (kernel 2.6.22) would be perfect !!

thanks,