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Bug#1091822: linux-image-6.12.6-amd64: The linux kernel 6.11 and 6.12 seems to have a bug in the mt7921e driver for MediaTek bluetooth adapters, which is in my Lenovo e14 laptop.

Cross-posted to 2 groups.

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Package: linux-image-6.12.6-amd64
Version: 6.12-6
Severity: normal
X-Debbugs-Cc: mark2332@gmail.com

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
Testing Lenovo E14 AMD laptop with Mediatek MT7921 Wifi/Bluetooth adapter built-in, with Debian Trixie
or previously 6.11 or 6.12 linux kernels on Debian bookworm.
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
Upon suspending Debian Trixie with 6.12 linux kernel, the laptop goes into suspend mode. Then it won't light up
the screen when it resumes. This only occurs with bluetooth ON in the top right gnome control panel.
If you turn bluetooth off, resuming from suspend works properly.
   * What was the outcome of this action?
The laptop does not resume from suspend - the screen does not light up.  No response from the laptop can be
obtained except for the power light.
   * What outcome did you expect instead?
The screen should light up upon resuming from suspend as per usual.

The following snippet from my journal may be relevant:
Dec 31 20:45:38 debian kernel: mt7921e 0000:02:00.0: Message 00020007 (seq 5) timeout
Dec 31 20:45:38 debian kernel: mt7921e 0000:02:00.0: PM: dpm_run_callback(): pci_pm_resume returns -110
Dec 31 20:45:38 debian kernel: mt7921e 0000:02:00.0: PM: failed to resume async: error -110


*** End of the template - remove these template lines ***


-- System Information:
Debian Release: Trixie
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-28-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

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Bug#1091822: linux-image-6.12.6-amd64: The linux kernel 6.11 and 6.12 seems to have a bug in the mt7921e driver for MediaTek bluetooth adapters, which is in my Lenovo e14 laptop. Mark 4332 <mark2332@gmail.com> - 2024-12-31 21:30 +0100

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