From: bugzilla-daemon@kernel.org
To: platform-driver-x86@vger.kernel.org
Subject: [Bug 218305] Ryzen 7 7840HS gets stuck at 544MHz frequency after resuming after unplugging the power cord during sleep
Date: Mon, 06 May 2024 17:26:23 +0000 [thread overview]
Message-ID: <bug-218305-215701-YWevupMWqK@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-218305-215701@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=218305
--- Comment #59 from Mario Limonciello (AMD) (mario.limonciello@amd.com) ---
Created attachment 306264
--> https://bugzilla.kernel.org/attachment.cgi?id=306264&action=edit
debugging patch
I'm attaching a patch that isn't upstreamed at the moment, but you can apply to
your kernel to try to capture a debug register for me. Apply it to your kernel
and then read the register value like this:
echo "0x59804" | sudo tee /sys/kernel/debug/amd_nb/smn_address
sudo cat /sys/kernel/debug/amd_nb/smn_value
Here is what a reasonable value looks like on my local system:
$ echo "0x59804" | sudo tee /sys/kernel/debug/amd_nb/smn_address
$ sudo cat /sys/kernel/debug/amd_nb/smn_value
0x017f1201
Share to me the values that you get from smn_value in these 3 situations:
1) At bootup (before you suspend)
2) After you've suspended and reproduced the issue
3) After you've done the W/A to undo the issue.
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next prev parent reply other threads:[~2024-05-06 17:26 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-24 7:21 [Bug 218305] New: Ryzen 7 7840HS gets stuck at 544MHz frequency after a random number of suspend/resume cycles bugzilla-daemon
2023-12-24 7:27 ` [Bug 218305] " bugzilla-daemon
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2024-03-06 17:17 ` [Bug 218305] Ryzen 7 7840HS gets stuck at 544MHz frequency after resuming after unplugging the power cord during sleep bugzilla-daemon
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