Pallipadi, Venkatesh wrote: >>> Also, can both of you send the complete acpidump output from >> your system. You can find acpidump in latest version of >> pmtools package here: >> http://www.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/ >> >> May be obtained over there: >> >> [...] >> >>>>>> processor, but speedstep-centrino returns ENODEV because of >>>>>> lack of _PCT et al >>>>>> entries in DSDT (http://www.fi.muni.cz/~xslaby/sklad/adump). >> ----------------------^^^^ >> > > Looking at the acpidump, looks like BIOS doesn't have this feature enabled. Can you also make sure you have latest BIOS for the platform and also, check in BIOS whether there are any options to enable this feature. Oh my god, I am a chump! Sorry; I had disabled this in BIOS. After enabling it, acpidump contains _PCT et al and speedstep-centrino works. thanks, -- http://www.fi.muni.cz/~xslaby/ Jiri Slaby faculty of informatics, masaryk university, brno, cz e-mail: jirislaby gmail com, gpg pubkey fingerprint: B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html