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Bug#955407: linux-image-4.19.0-8-amd64: "Uhhuh. NMI received for unknown reason" on AMD Ryzen

Started byDiederik de Haas <didi.debian@cknow.org>
First post2021-10-10 08:20 +0200
Last post2021-10-10 08:20 +0200
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  Bug#955407: linux-image-4.19.0-8-amd64: "Uhhuh. NMI received for unknown reason" on AMD Ryzen Diederik de Haas <didi.debian@cknow.org> - 2021-10-10 08:20 +0200

#73242 — Bug#955407: linux-image-4.19.0-8-amd64: "Uhhuh. NMI received for unknown reason" on AMD Ryzen

FromDiederik de Haas <didi.debian@cknow.org>
Date2021-10-10 08:20 +0200
SubjectBug#955407: linux-image-4.19.0-8-amd64: "Uhhuh. NMI received for unknown reason" on AMD Ryzen
Message-ID<D6AlH-1kL-1@gated-at.bofh.it>

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On Saturday, 9 October 2021 21:28:19 CEST Diederik de Haas wrote:
> I'll try later whether I can reliably reproduce it with hibernate mode.

That appears to be the case. Hibernated my PC yesterday and started it up
today. After some time, I got the msgs again, this time also in dmesg:

# dmesg | tail -n15
[248910.645828] pl2303 5-4:1.0: pl2303 converter detected
[248910.645936] PM: hibernation: Basic memory bitmaps freed
[248910.645937] OOM killer enabled.
[248910.645938] Restarting tasks ... done.
[248910.647538] PM: hibernation: hibernation exit
[248910.650035] snd_hda_codec_hdmi hdaudioC0D0: HDMI: ELD buf size is 0, force 128
[248910.650051] snd_hda_codec_hdmi hdaudioC0D0: HDMI: invalid ELD data byte 0
[248910.672631] usb 5-4: pl2303 converter now attached to ttyUSB0
[248910.672669] pl2303 5-3:1.0: pl2303 converter detected
[248910.699625] usb 5-3: pl2303 converter now attached to ttyUSB1
[248910.699669] pl2303 5-2:1.0: pl2303 converter detected
[248910.726626] usb 5-2: pl2303 converter now attached to ttyUSB2
[249275.040414] Uhhuh. NMI received for unknown reason 2c on CPU 0.
[249275.040417] Do you have a strange power saving mode enabled?
[249275.040417] Dazed and confused, but trying to continue

HTH,
  Diederik

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