From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vince Subject: Missing PSB or _PSS in BIOS Date: Sun, 19 Feb 2006 02:45:06 +0100 Message-ID: <43F7CDA2.8030209@online.fr> Reply-To: legoll@online.fr Mime-Version: 1.0 Content-Transfer-Encoding: 7BIT Return-path: Sender: linux-acpi-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-acpi@vger.kernel.org Cc: cpufreq@lists.linux.org.uk, legoll@online.fr Hello, I'm using an opteron 165 (dual-core) which frequency/voltage should be able to be scaled, but unfortunately the latest BIOS for my motherboard lacks the frequency transition tables needed by powernow-k8.c as shown by the boot message: powernow-k8: MP systems not supported by PSB BIOS structure powernow-k8: BIOS error - no PSB or ACPI _PSS objects Would it be possible to write suitable ACPI _PSS from AMD processor documentation ? Or take the infos from some other ACPI BIOS which has support, and put it in mine ? And use the "ACPI load custom DSDT" kernel option to get the patched one used by the powernow-k8 driver ? I found a lot of infos about fixing glitches in DSDT but could not find anything about adding missing _PSS entries... Would that be dangerous ? Is there something else I could do ? I don't think I'll get an answer from the vendor, even if I tried... Please, keep me on the CC list -- Vincent Legoll