From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (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 100AC3A5435 for ; Fri, 29 May 2026 06:34:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780036466; cv=none; b=MFtvOauyVVtRdRBzZ3USvGlAWvU18zn4HHBjWjSfP1/oqiKByzIHNZQf6bwAz/Ayb6sz9yTMFUxjJ4oaQFad66uYUFGhg42OZy2a3PFwsOJjTlf8uIhJfhsG3K7iZ5enaugyorSyJN81KV2xAo+niCgPOWdQ16XgbPYLS4ZYQDE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780036466; c=relaxed/simple; bh=qSkOTjNhPBFBARr91j1h9z92DpGXRTnmpoZsTSzDj/I=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=prJsrNL0b2IQJm8FMEhs3/cLp3da11WJ3z90w0izGU3i3igGL29Cp+b78JbheOXKklp5hwuJbuPn26L4YzMuc+JQ4Ns3bllBz6GFkg3yDsfnd5UkpPM0cUHTCYHrvAfZR7IPJ5brC7CaA3c3/3wZwRhdh15Ic7UFy+r9HapeS+w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=KFVDvYW2; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="KFVDvYW2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1780036465; x=1811572465; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=qSkOTjNhPBFBARr91j1h9z92DpGXRTnmpoZsTSzDj/I=; b=KFVDvYW2NJjtexMtYMEtI5QqgdOH5lMZKYADO8vu1zJ3nXtGGFjqA3/v dmSuMYflYMoMlnZ/oHhv/UIK1TeTB/UAUhunAjmelXqt3NOEMwOj2BMyH HWcb65bCO7N2GlqOYsMUkVSBpqT5Ht/H4TNuYQc+ZS2FsqxlmwLm3OqTA N67utw58urAaLsjYW/8PpV2kKu11xgP0YnljoCduLm2ThKHgG/Cv9biKu m27/2rB78GcwRRwzi79xczrVs4GCrFh4iwXxGd0QyUUtSSC+CDclPbc7D 8xVQqAFZAFKFImmYJ4tusMNZupZ6KWLWsPZwgI7EYlFLZKu92+GYFTK1N Q==; X-CSE-ConnectionGUID: 99w+omf/SvyaBZnU+vWSNg== X-CSE-MsgGUID: lay2PjhuQfmz3hdJG1IW+g== X-IronPort-AV: E=McAfee;i="6800,10657,11800"; a="106336059" X-IronPort-AV: E=Sophos;i="6.24,174,1774335600"; d="scan'208";a="106336059" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2026 23:34:25 -0700 X-CSE-ConnectionGUID: TvAorfpHT5OM3oD3FRrYxQ== X-CSE-MsgGUID: NHOEmUySQJGL2g/z+Mf0Fg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,174,1774335600"; d="scan'208";a="240215490" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa008.fm.intel.com with ESMTP; 28 May 2026 23:34:23 -0700 Received: by black.igk.intel.com (Postfix, from userid 1001) id 7582495; Fri, 29 May 2026 08:34:22 +0200 (CEST) Date: Fri, 29 May 2026 08:34:22 +0200 From: Mika Westerberg To: Sebastian Loscher Cc: Mario Limonciello , linux-usb@vger.kernel.org, andreas.noever@gmail.com Subject: Re: [BUG] thunderbolt: USB4 v2 TBGAA tunnel creation crash in TMU enhanced uni-directional mode Message-ID: <20260529063422.GJ3102@black.igk.intel.com> References: <13787e02-75d9-8000-65d5-41434a0e817c@krang.de> <20260525044421.GI8580@black.igk.intel.com> <8c753210-e399-4ddf-8ca4-d250fd4af369@kernel.org> <20260526040732.GO8580@black.igk.intel.com> <523ddc3e-2047-c202-482a-02d76de17cd4@krang.de> <20260527122624.GC3102@black.igk.intel.com> <536cc913-8ae8-9000-69f9-02f604b7edfe@krang.de> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <536cc913-8ae8-9000-69f9-02f604b7edfe@krang.de> Hi, On Wed, May 27, 2026 at 09:19:56PM +0200, Sebastian Loscher wrote: > Hey Mika, > > Please find attached some more tbtraces (and dmesg however I think they tell > you less of a story). > > I have the previously used cable and repeated the usual boot, plugin. Then I > dumped the files and rebooted and repeated with a 2nd cable (it's from a three > months old Lenovo and it charges with 140W, says TB in the package; the > original cable came with the dock and was only unpacked the day before I > reached out to you). I attached two different dumps for the 2nd, no reboot in > between. > You wondered about the initial couple of disconnects in the logs and blamed the > cable - rightfully so - but here are some more details, maybe not fully obvious > from the logs: > Onbiously there is a GPU in the dock that runs at 100% fan speed, expected of > course no PC tells it to do otherwise. When I plug the USB cable in there is > 50% chance that the fans go down in speed for a second during the initial > handshake (did so with tbtrace_cable1 and cable2_2 | but fails at speed > negotiation) or it just keeps spinning high (tbtrace_cable2) which seems like, > at least when I watched dmesg, that it doesn't go beyond the initial handshake > and disconnects right away. That was, in the previous test, for me the reason > to plugin it in and out multiple times until I could ‘hear’ something more was > happening. > > A bit adventurous description but maybe the extra info is worth it. I noticed in your dmesg you have pcie_port_pm=off, can you remove that from the command line, and add "thunderbolt.dyndbg=+p" instead and try again? Then provide full dmesg?