From: bugzilla-daemon@kernel.org
To: linux-bluetooth@vger.kernel.org
Subject: [Bug 221878] MT7902 Bluetooth USB 0e8d:1ede firmware crashes during use; reset fails and controller becomes unresponsive
Date: Tue, 25 Aug 2026 06:34:08 +0000 [thread overview]
Message-ID: <bug-221878-62941-ea3bNvkHiq@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-221878-62941@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=221878
--- Comment #3 from maksheev777@mail.ru (maksheev777@mail.ru) ---
I tested an older MT7902 Bluetooth firmware continuously for approximately one
week (2026-08-18 through 2026-08-25) under normal use, including my usual
Bluetooth devices, without
reproducing the firmware coredump, subsystem-reset failure, USB timeouts, or
controller disappearance.
Working firmware:
- Build time/version: 20220107141051
- SHA-256: b720c3883aeaa926fe16930f3f4cddd29a3ecfd0a7c519f0a18efd42423b591e
- Source: historical community MT7902 firmware blob
- Current kernel: 7.1.9-arch1-2
- BlueZ: 5.87-2
Failing official firmware:
- Build time/version: 20250826211444
- SHA-256: 4f53b5e02fbd933172e18caf952bda410a877eaad00561781528cb4aff58dc38
The official blob is identical in Arch linux-firmware-mediatek releases
20260309 through 20260810; older official packages do not contain MT7902
Bluetooth firmware. With the official
blob, failure typically occurred within minutes, whereas the 2022 blob has
remained stable for about one week. This strongly suggests a regression or
hardware-variant incompatibility in the
current official MT7902 Bluetooth firmware rather than a general BlueZ failure.
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next prev parent reply other threads:[~2026-08-25 6:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-13 10:58 [Bug 221878] New: MT7902 Bluetooth USB 0e8d:1ede firmware crashes during use; reset fails and controller becomes unresponsive bugzilla-daemon
2026-08-18 7:16 ` [Bug 221878] " bugzilla-daemon
2026-08-18 7:29 ` bugzilla-daemon
2026-08-25 6:34 ` bugzilla-daemon [this message]
2026-08-25 7:02 ` bugzilla-daemon
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