From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (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 723A2346A08; Thu, 18 Dec 2025 10:20:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766053227; cv=none; b=BDFMDEznS8ENh/v+v5ZCvVNYlV4v6CcBoJrg7PebcfEltRCD9YLx9ChKyWHtPscoQaaUhwoNkoFamztudKqsJ2NT8/h2r9QFAwY8Wa/kRpabACU8khQuWCQFbkbWz1TKrck25JrfbMYf7OGdbxshfhO81M2XZoWw+LkSKjdqEK4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766053227; c=relaxed/simple; bh=KoK7e/3h6e13eRjLuAuqEv/mD4f7/qd/2dnukRXwsk8=; h=Date:From:To:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=j++3AxY+0z7ws6CyqFOV/E1NqXQaa9vLwalItVPVcwlwNio4QBOgK5tpL7tzC0LTxJ+IE1doGyi9SIHZcl81fFDPrmIoVpQXu0PG7AxijQcDlErk+gvWMttn6bB4+rMcJzZCq4Mgv5dzu6Fb2U1rXwmxe3p64vUFfJhEplylbJY= 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=Md1ZYcsF; arc=none smtp.client-ip=192.198.163.12 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="Md1ZYcsF" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766053225; x=1797589225; h=date:from:to:subject:message-id:references:mime-version: in-reply-to; bh=KoK7e/3h6e13eRjLuAuqEv/mD4f7/qd/2dnukRXwsk8=; b=Md1ZYcsFD+2oAIhkZvKMVYRhjCccXlKarK+Vylt4W8VS0suWRFwp4m2+ 4T175COPhpqjnfMmh0T4KPZZww8AOIwLbkiEyOJF49VwpRbdBI4KDfEqw UdeFIL48tK7TagI5HvK661QJXSnd/ePkk32wwZeWgU4bxOgmgG9uxLPuq kENka1w+ub3yYHGrs0QVxm73wgRX+cmMq46foJt2YekNh73qVQsi4rb0B OvKibEVDgrW5+G3dUZhgVADK/L3TC9maNC9sRVim0fl4nfOY0DFANWfek L9/Rc09UXsHHidz/uqBgn5PmUuJafwXie6MrXNCahp4kvZ820iQbXyf0V A==; X-CSE-ConnectionGUID: wGxJU3LhSiWyYvmOoSfH8A== X-CSE-MsgGUID: 4X9PrKVKQJ6vK6ePJTwlfQ== X-IronPort-AV: E=McAfee;i="6800,10657,11645"; a="71862861" X-IronPort-AV: E=Sophos;i="6.21,158,1763452800"; d="scan'208";a="71862861" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Dec 2025 02:20:24 -0800 X-CSE-ConnectionGUID: WNrRx+wGQHOvpFpIW97cYg== X-CSE-MsgGUID: 7A7Oo+JrRl6lFJLMb15ZpA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,158,1763452800"; d="scan'208";a="199380610" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa010.fm.intel.com with ESMTP; 18 Dec 2025 02:20:22 -0800 Received: by black.igk.intel.com (Postfix, from userid 1001) id AA21F8E; Thu, 18 Dec 2025 11:20:21 +0100 (CET) Date: Thu, 18 Dec 2025 11:20:21 +0100 From: Mika Westerberg To: "Chia-Lin Kao (AceLan)" , Mario Limonciello , Andreas Noever , Mika Westerberg , Yehezkel Bernat , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Sanath.S@amd.com, "Lin, Wayne" Subject: Re: [PATCH] [RFC] thunderbolt: Add delay for Dell U2725QE link width Message-ID: <20251218102021.GV2275908@black.igk.intel.com> References: <4634177b-8ed1-4d65-9f3c-754d8c1eb828@amd.com> <20251212123941.GK2275908@black.igk.intel.com> <484ff606-ec10-477c-acfe-d4d781e2873d@amd.com> <20251217125507.GR2275908@black.igk.intel.com> <5d7f2661-f02b-4985-b438-196b48c10237@amd.com> <20251218072125.GU2275908@black.igk.intel.com> <6inne3luvw4ot3wqnsaw3gzhlxtd4756i465oto6so5ox3syxp@kibuv4vhvexx> 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 In-Reply-To: <6inne3luvw4ot3wqnsaw3gzhlxtd4756i465oto6so5ox3syxp@kibuv4vhvexx> On Thu, Dec 18, 2025 at 03:35:05PM +0800, Chia-Lin Kao (AceLan) wrote: > > Now since USB 2.x has its own wires in Type-C cable this tells me that > > there is some real problem with the connection. Have you tried different > > cables already? > Here is the log I got with another tbt4 cable. > I'm using the kernel with Mario suggests modification. > > https://people.canonical.com/~acelan/bugs/tbt_call_trace/intel/merged_6.18.0-d358e5254674+.patched2.2_new_cable.out Here I see (assuming I read it right) that the USB 2.x enumerates only after the first unplug: [ 28.589861] usb 3-2: New USB device found, idVendor=1d5c, idProduct=5801, bcdDevice= 1.01 [ 28.589864] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 28.589865] usb 3-2: Product: USB2.0 Hub [ 28.589866] usb 3-2: Manufacturer: Fresco Logic, Inc. Since Goshen Ridge is pretty stable in Linux I'm kind of suspecting still a connection issue rather than SW. Or could be power related too. AFAIK the USB 2.x should be rock solid but here it seems not. Are you using active or passive cables and do they have the lightning logo? You could still try to comment out both tb_retimer_scan() calls and see if that makes any difference but I doubt since your last log unplug happened when we were reading DROM of the second device router not when sidband access was done.