Bug#990106:

To: 990106@bugs.debian.org
Subject: Bug#990106:
From: Davide Beatrici <me@davidebeatrici.dev>
Date: Mon, 21 Jun 2021 03:14:47 +0200 (CEST)
Message-id: <[🔎] Mcg5X11--3-2@davidebeatrici.dev>
Reply-to: Davide Beatrici <me@davidebeatrici.dev>, 990106@bugs.debian.org
References: <[🔎] MceWGIo--3-2@davidebeatrici.dev>

After leaving the computer on for a while I reproduced the problem on 5.10.0-6 as well, even after disconnecting the SPDIF cable.

Considering that I've been using this machine for at least one year and I've never encountered the issue, I believe the relay in the amplifier is going bad and pushing noise into mains.

I would expect the power supply to filter it out though, as it's a quality one: Sharkoon SilentStorm Cool Zero 850W.

Out of curiosity, were there perhaps changes related to power management in the platform or amdgpu drivers?

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Follow-Ups:
- Bug#990106:
  - From: Diederik de Haas <didi.debian@cknow.org>

References:
- Bug#990106: Switching on/off 5.1 audio amplifier/receiver causes graphics card to turn off
  - From: Davide Beatrici <me@davidebeatrici.dev>

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