linux-kernel - [2.6.25-rc3] ACPI _PPC limiting processor speed...

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <6278d2220802251329x75b6d4c5lc3fab6fe6e75363f@mail.gmail.com>
Date:	Mon, 25 Feb 2008 21:29:24 +0000
From:	"Daniel J Blueman" <daniel.blueman@...il.com>
To:	"Linux Kernel" <linux-kernel@...r.kernel.org>
Subject: [2.6.25-rc3] ACPI _PPC limiting processor speed...

My 2.2GHz [1] Thinkpad T61 is unable to get past 1.2GHz, seemingly
because of the _PPC ACPI objects [2].

Given that the _PPC object is different for both cores, is this more
of a BIOS bug or an ACPI interpreter problem? The problem was present
in 2.6.24-rc, 2.6.24 final and since.

BIOS is 7LETA9WW/2.09, so current - would any further information be
useful for debugging this problem, and would dumping the ACPI tables
be useful?

Thanks,
  Daniel

--- [1]

freq-table: table entry 0: 2201000 kHz, 0 index
freq-table: table entry 1: 2200000 kHz, 1 index
freq-table: table entry 2: 1600000 kHz, 2 index
freq-table: table entry 3: 1200000 kHz, 3 index
freq-table: table entry 4: 800000 kHz, 4 index

--- [2]

cpufreq-core: CPU 0: _PPC is 3 - frequency  limited
cpufreq-core: CPU 1: _PPC is 0 - frequency not limited
-- 
Daniel J Blueman
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/