From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF40BC433DF for ; Sat, 17 Oct 2020 22:13:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF5A6207BC for ; Sat, 17 Oct 2020 22:13:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2439691AbgJQWNy (ORCPT ); Sat, 17 Oct 2020 18:13:54 -0400 Received: from l2mail1.panix.com ([166.84.1.75]:64046 "EHLO l2mail1.panix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439503AbgJQWNx (ORCPT ); Sat, 17 Oct 2020 18:13:53 -0400 X-Greylist: delayed 910 seconds by postgrey-1.27 at vger.kernel.org; Sat, 17 Oct 2020 18:13:53 EDT Received: from mailbackend.panix.com (mailbackend.panix.com [166.84.1.89]) by l2mail1.panix.com (Postfix) with ESMTPS id 4CDH383Z6wzDRQ for ; Sat, 17 Oct 2020 17:58:44 -0400 (EDT) Received: from xps-7390 (cpe-23-242-39-94.socal.res.rr.com [23.242.39.94]) by mailbackend.panix.com (Postfix) with ESMTPSA id 4CDH3664cSzrL4; Sat, 17 Oct 2020 17:58:42 -0400 (EDT) Date: Sat, 17 Oct 2020 14:58:40 -0700 (PDT) From: "Kenneth R. Crudup" Reply-To: "Kenneth R. Crudup" To: Mika Westerberg cc: linux-usb@vger.kernel.org Subject: Re: I get a new Thunderbolt domain UUID on every boot In-Reply-To: <20200721102812.GX5180@lahna.fi.intel.com> Message-ID: References: <20200720100723.GW5180@lahna.fi.intel.com> <20200721102812.GX5180@lahna.fi.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org > > Finally, every now and then on a reboot, my TB dock "flaps" (repeatedly > > connects and disconnects) and I have to either connect/reconnect the TB3 > > cable, or initate a power-off. I suspect this is a BIOS bug ... > > Have you seen this before or have any ideas? On Tue, 21 Jul 2020, Mika Westerberg wrote: > Not seen before, but IIRC some laptops require more power than what the > dock can supply and the symptoms for that are similar that the > connection goes down and then back up several times. BTW, apparently this was a Dell BIOS bug- they'd released version 1.6.2 a couple of weeks ago for my machine (XPS 7390 2-in-1) and I haven't seen it since. Considering this thing's a year old, I'm not confident in Dell's ability to be proactive about bugs (but I guess in their defense that did solve the the last issue I had with this thing). -Kenny -- Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Orange County CA