kacpid using lot of cpu on packard bell SB87 (ubuntu 7.10-amd64)

[Valombre]

On a packard bell SB87-p-001 (laptop) (http://www.packardbell.fr/products/ordinateurs-portables/easynote-sb/EasyNote-SB87-P-001/productsheet-PC07Q00002-1160.html)
 sometimes kacpid use arround 50% of the cpu times (core 2 T7500) and i have to reboot to return to a normal state.
I can't kill the process kacpid.
I use the last official BIOS of the laptop (PB3G3A03)

For info ubuntu 7.10 64 bits version is uptodate
Other info :
- Dualboot with vista, where i have a similar problem of cpu intensive usage (not all the time), but no way to see the specific process using cpu, as task manager not as good as ubuntu :)
- sometimes i lost wifi signal, no way to link up again until i reboot or use the special on/off button for wifi
- All other peripheral working well webcam to !

I'm ready to test what is necessary to help solving the issues, installing other versions of ubuntu or kernel etc ...

[Valombre (valombre-d)]

I tried hardy Alpha 3 (alternate as i couldn't install in graphical mode) with all updates (date 26/01/08) same issue .. kacpid after a while is taking arround 50% of cpu time.
Only a reboot is necessary to go back in a normal state.

[Valombre (valombre-d)]

Well, Well after a lot of search and using different forum it seams that the problem is specific to some packard bell series SB85/86/87 a bad ACPI coding in BIOS i hope i'll have a real suport from PB for this laptop.
You can close this bug.