From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D6F0624A06D for ; Tue, 25 Aug 2026 06:34:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787639648; cv=none; b=Cmw6rVE5VhNU876xR3xDDGaxBrbkCO8C7scrFC6YG4HHnf8DJOnd8xWuc6cjfEKgFNSaoisOvBUkzSJFs27syJ+cOuKrNqsN9vum3fDmxd2MrtXMO+L8nPZNOc8R5Re/yxNNX7Xj3KDgH7Cq3NuGQH21Rp94RFxTswrcG2e7SjQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787639648; c=relaxed/simple; bh=sY9tVUyfsEu/GDXg5BiC0/pVJC8R8XZh1z5m5YnTX2Y=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=hcKQbANtaFTMiCmgBeL7Z5XxcGHAZ8jqnMUUdhW2BbdUUpPaFKdYz80ndIBAbqunUyF+eA8bsmKCU8fl3ArZsdLyXNr4voJeumEO7YhsANnWECCOv9xV9xdlbj8CmU4uRFY0U2uZ+eN90tq2NcnBefSjy3BIF9LShpSV1oL+vN8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=abeFBb1Q; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="abeFBb1Q" Received: by smtp.kernel.org (Postfix) with ESMTPS id 77039C2BCB8 for ; Tue, 25 Aug 2026 06:34:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1787639648; bh=sY9tVUyfsEu/GDXg5BiC0/pVJC8R8XZh1z5m5YnTX2Y=; h=From:To:Subject:Date:In-Reply-To:References:From; b=abeFBb1QKoxh7XIKptpwEHBqgt7C8dDso99BsLnEUIr1WRUOVH6zv3nvzBp1j7oHR Vd78OcKASxnp2yhHqxDOHdUiCJixOVbGa37+Igi4xaKeH4Z//P6AGBHz3Zkd3r0dAk vl/gO5E2dWNmEv5e55Kob2zLK/W3sPnHLvko4FPAztr/3XxkHd7ZCtjKKXtQwBvkPD QmK/zSEgaVucgAG7re44Ogs04PfqRnEt5sTp4t3WSw0LGQNOY2XXpZrcdt3YfGzK8Y KhneRU64pYfby1Pvc48Wwv5RUSPlfuQgzXR48YibbnIU0q0npvDTHATYkz/oYNYBvi skL5uv/oY2+hg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 53E31C41613; Tue, 25 Aug 2026 06:34:08 +0000 (UTC) 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 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Drivers X-Bugzilla-Component: Bluetooth X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: maksheev777@mail.ru X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-bluetooth@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221878 --- 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 fail= ure. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=