From: bugzilla-daemon@kernel.org
To: linux-pm@vger.kernel.org
Subject: [Bug 218171] amd-pstate not loading on zen2 threadripper 3960x (trx40
Date: Thu, 07 Dec 2023 05:52:32 +0000 [thread overview]
Message-ID: <bug-218171-137361-ZnG7aGtoHZ@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-218171-137361@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=218171
Mithat (ozin@itu.edu.tr) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ozin@itu.edu.tr
--- Comment #19 from Mithat (ozin@itu.edu.tr) ---
Hello Everyone,
I dunno if its relevant but my observations regarding the problem are:
As far as I understand, AMD CPUs declares CPPC via CPUID intruction.
1) cpuid 0x80000008 (ebx) CPPC bit is always 0 (disabled) whether you enable or
disable CPPC in BIOS.
2) Asus AMI Bios does not have _OSC declaration for CPPC support in DSDT and
SSDT tables.
3) There exists _CPC declarations in a SSDT table but since CPPC support is not
declared, it is omitted by Linux kernel ?
Hence, amd_pstate module declares "the _CPC object is not present in SBIOS or
ACPI disabled" ?
Hope it helps.
Mithat
--
You may reply to this email to add a comment.
You are receiving this mail because:
You are the assignee for the bug.
next prev parent reply other threads:[~2023-12-07 5:52 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-21 9:51 [Bug 218171] New: amd-pstate not loading on zen2 threadripper 3960x (trx40 bugzilla-daemon
2023-11-21 9:56 ` [Bug 218171] " bugzilla-daemon
2023-11-21 10:16 ` bugzilla-daemon
2023-11-21 10:48 ` bugzilla-daemon
2023-11-22 2:43 ` bugzilla-daemon
2023-11-22 8:34 ` bugzilla-daemon
2023-11-22 8:45 ` bugzilla-daemon
2023-11-22 8:49 ` bugzilla-daemon
2023-11-22 8:56 ` bugzilla-daemon
2023-11-22 9:01 ` bugzilla-daemon
2023-11-22 9:04 ` bugzilla-daemon
2023-11-22 9:25 ` bugzilla-daemon
2023-11-23 7:57 ` bugzilla-daemon
2023-12-01 12:28 ` bugzilla-daemon
2023-12-04 5:31 ` bugzilla-daemon
2023-12-04 5:55 ` bugzilla-daemon
2023-12-04 8:30 ` bugzilla-daemon
2023-12-04 8:45 ` bugzilla-daemon
2023-12-04 9:43 ` bugzilla-daemon
2023-12-07 5:52 ` bugzilla-daemon [this message]
2023-12-15 11:25 ` bugzilla-daemon
2023-12-15 11:46 ` bugzilla-daemon
2023-12-30 3:28 ` bugzilla-daemon
2024-01-02 3:23 ` bugzilla-daemon
2024-01-02 10:10 ` bugzilla-daemon
2024-01-16 22:27 ` bugzilla-daemon
2024-01-16 22:33 ` bugzilla-daemon
2024-01-17 3:12 ` bugzilla-daemon
2024-01-17 16:24 ` bugzilla-daemon
2024-01-17 21:42 ` bugzilla-daemon
2024-01-17 21:49 ` bugzilla-daemon
2024-01-18 6:30 ` bugzilla-daemon
2024-01-18 22:46 ` bugzilla-daemon
2024-01-22 22:08 ` bugzilla-daemon
2024-01-22 22:09 ` bugzilla-daemon
2024-01-22 22:10 ` bugzilla-daemon
2024-01-25 6:17 ` bugzilla-daemon
2024-01-25 9:21 ` bugzilla-daemon
2024-01-25 12:25 ` bugzilla-daemon
2024-01-25 14:39 ` bugzilla-daemon
2024-01-25 18:41 ` bugzilla-daemon
2024-01-26 4:33 ` bugzilla-daemon
2024-01-26 16:36 ` bugzilla-daemon
2024-02-01 19:34 ` bugzilla-daemon
2024-02-02 14:28 ` bugzilla-daemon
2024-02-04 14:08 ` bugzilla-daemon
2024-03-10 15:33 ` bugzilla-daemon
2024-03-22 7:38 ` bugzilla-daemon
2024-03-25 2:28 ` bugzilla-daemon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-218171-137361-ZnG7aGtoHZ@https.bugzilla.kernel.org/ \
--to=bugzilla-daemon@kernel.org \
--cc=linux-pm@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.