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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 179D9C43603 for ; Fri, 20 Dec 2019 14:25:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D50F1206A5 for ; Fri, 20 Dec 2019 14:25:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727413AbfLTOZV (ORCPT ); Fri, 20 Dec 2019 09:25:21 -0500 Received: from mx3.molgen.mpg.de ([141.14.17.11]:54427 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727347AbfLTOZU (ORCPT ); Fri, 20 Dec 2019 09:25:20 -0500 Received: from rabammel.molgen.mpg.de (rabammel.molgen.mpg.de [141.14.30.220]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pmenzel) by mx.molgen.mpg.de (Postfix) with ESMTPSA id 7E8B82000BFE3; Fri, 20 Dec 2019 15:25:15 +0100 (CET) Subject: Re: USB devices on Dell TB16 dock stop working after resuming To: Mathias Nyman , Mika Westerberg Cc: Mario Limonciello , Andreas Noever , Michael Jamet , Yehezkel Bernat , Christian Kellner , linux-kernel@vger.kernel.org, Anthony Wong References: <20191104154446.GH2552@lahna.fi.intel.com> <20191104162103.GI2552@lahna.fi.intel.com> <20191120105048.GY11621@lahna.fi.intel.com> <20191122105012.GD11621@lahna.fi.intel.com> <20191122112921.GF11621@lahna.fi.intel.com> <20191122114108.GG11621@lahna.fi.intel.com> <4b25e707-d2b5-11d1-4b16-48122828fde7@linux.intel.com> From: Paul Menzel Message-ID: Date: Fri, 20 Dec 2019 15:25:14 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <4b25e707-d2b5-11d1-4b16-48122828fde7@linux.intel.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms020307020207010209000909" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms020307020207010209000909 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Dear Mathias, On 2019-11-26 13:44, Mathias Nyman wrote: > On 26.11.2019 13.33, Paul Menzel wrote: >> On 2019-11-25 10:20, Mathias Nyman wrote: >>> On 22.11.2019 13.41, Mika Westerberg wrote: >>>> On Fri, Nov 22, 2019 at 12:33:44PM +0100, Paul Menzel wrote: >> >>>>> On 2019-11-22 12:29, Mika Westerberg wrote: >>>>>> On Fri, Nov 22, 2019 at 12:05:13PM +0100, Paul Menzel wrote: >>>>> >>>>>>> On 2019-11-22 11:50, Mika Westerberg wrote: >>>>>>>> On Wed, Nov 20, 2019 at 12:50:53PM +0200, Mika Westerberg wrote:= >>>>>>>>> On Tue, Nov 19, 2019 at 05:55:43PM +0100, Paul Menzel wrote: >>>>>>> >>>>>>>>>> On 2019-11-04 17:21, Mika Westerberg wrote: >>>>>>>>>>> On Mon, Nov 04, 2019 at 05:11:10PM +0100, Paul Menzel wrote: >>>>>>>>>> >>>>>>>>>>>> On 2019-11-04 16:49, Mario.Limonciello@dell.com wrote: >>>>>>>>>>>> >>>>>>>>>>>>>> From: Mika Westerberg >>>>>>>>>>>>>> Sent: Monday, November 4, 2019 9:45 AM >>>>>>>>>>>> >>>>>>>>>>>>>> On Mon, Nov 04, 2019 at 04:44:40PM +0200, Mika Westerberg = wrote: >>>>>>>>>>>>>>> On Mon, Nov 04, 2019 at 04:25:03PM +0200, Mika Westerberg= wrote: >>>>>>>>>>>> >>>>>>>>>>>>>>>> On Mon, Nov 04, 2019 at 02:13:13PM +0100, Paul Menzel wr= ote: >>>>>>>>>>>> >>>>>>>>>>>>>>>>> On the Dell XPS 13 9380 with Debian Sid/unstable with L= inux 5.3.7 >>>>>>>>>>>>>>>>> suspending the system, and resuming with Dell=E2=80=99s= Thunderbolt TB16 >>>>>>>>>>>>>>>>> dock connected, the USB input devices, keyboard and mou= se, >>>>>>>>>>>>>>>>> connected to the TB16 stop working. They work for a few= seconds >>>>>>>>>>>>>>>>> (mouse cursor can be moved), but then stop working. The= laptop >>>>>>>>>>>>>>>>> keyboard and touchpad still works fine. All firmware is= up-to-date >>>>>>>>>>>>>>>>> according to `fwupdmgr`. >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> What are the exact steps to reproduce? Just "echo mem > >>>>>>>>>>>>>>>> /sys/power/state" and then resume by pressing power butt= on? >>>>>>>>>>>> >>>>>>>>>>>> GNOME Shell 3.34.1+git20191024-1 is used, and the user just = closes the >>>>>>>>>>>> display. So more than `echo mem > /sys/power/state` is done.= What >>>>>>>>>>>> distribution do you use? >>>>>>>>>>> >>>>>>>>>>> I have buildroot based "distro" so there is no UI running. >>>>>>>>>> >>>>>>>>>> Hmm, this is quite different from the =E2=80=9Cnormal=E2=80=9D= use-case of the these devices. >>>>>>>>>> That way you won=E2=80=99t hit the bugs of the normal users. ;= -) >>>>>>>>> >>>>>>>>> Well, I can install some distro to that thing also :) I suppose= Debian >>>>>>>>> 10.2 does have this issue, no? >>>>>>>>> >>>>>>>>>>>>>>> I tried v5.4-rc6 on my 9380 with TB16 dock connected and = did a couple of >>>>>>>>>>>>>>> suspend/resume cycles (to s2idle) but I don't see any iss= ues. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> I may have older/different firmware than you, though. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Upgraded BIOS to 1.8.0 and TBT NVM to v44 but still can't = reproduce this >>>>>>>>>>>>>> on my system :/ >>>>>>>>>>>> >>>>>>>>>>>> The user reported the issue with the previous firmwares 1.x = and TBT NVM v40. >>>>>>>>>>>> Updating to the recent version (I got the logs with) did not= fix the issue. >>>>>>>>>>> >>>>>>>>>>> I also tried v40 (that was originally on that system) but I w= as not able >>>>>>>>>>> to reproduce it. >>>>>>>>>>> >>>>>>>>>>> Do you know if the user changed any BIOS settings? >>>>>>>>>> >>>>>>>>>> We had to disable the Thunderbolt security settings as otherwi= se the USB >>>>>>>>>> devices wouldn=E2=80=99t work at cold boot either. >>>>>>>>> >>>>>>>>> That does not sound right at all. There is the preboot ACL that= allows >>>>>>>>> you to use TBT dock aready on boot. Bolt takes care of this. >>>>>>>>> >>>>>>>>> Are you talking about USB devices connected to the TB16 dock? >>>>>>>>> >>>>>>>>> Also are you connecting the TB16 dock to the Thunderbolt ports = (left >>>>>>>>> side of the system marked with small lightning logo) or to the = normal >>>>>>>>> Type-C ports (right side)? >>>>>>>>> >>>>>>>>>> So, I built Linux 5.4-rc8 (`make bindeb-pkg -j8`), but unfortu= nately the >>>>>>>>>> error is still there. Sometimes, re-plugging the dock helped, = and sometimes >>>>>>>>>> it did not. >>>>>>>>>> >>>>>>>>>> Please find the logs attached. The strange thing is, the Linux= kernel detects >>>>>>>>>> the devices and I do not see any disconnect events. But, `lsus= b` does not list >>>>>>>>>> the keyboard and the mouse. Is that expected. >>>>>>>>> >>>>>>>>> I'm bit confused. Can you describe the exact steps what you do = (so I can >>>>>>>>> replicate them). >>>>>>>> >>>>>>>> I managed to reproduce following scenario. >>>>>>>> >>>>>>>> 1. Boot the system up to UI >>>>>>>> 2. Connect TB16 dock (and see that it gets authorized by bolt) >>>>>>>> 3. Connect keyboard and mouse to the TB16 dock >>>>>>>> 4. Both mouse and keyboard are functional >>>>>>>> 5. Enter s2idle by closing laptop lid >>>>>>>> 6. Exit s2idle by opening the laptop lid >>>>>>>> 7. After ~10 seconds or so the mouse or keyboard or both do not = work >>>>>>>> =C2=A0=C2=A0=C2=A0=C2=A0 anymore. They do not respond but they a= re still "present". >>>>>>>> >>>>>>>> The above does not happen always but from time to time. >>>>>>>> >>>>>>>> Is this the scenario you see as well? >>>>>>> >>>>>>> Yes, it is. Though I=E2=80=99d say it=E2=80=99s only five seconds= or so. >>>>>>> >>>>>>>> This is on Ubuntu 19.10 with the 5.3 stock kernel. >>>>>>> >>>>>>> =E2=80=9Cstock=E2=80=9D in upstream=E2=80=99s or Ubuntu=E2=80=99s= ? >>>>>> >>>>>> It is Ubuntu's. >>>>>> >>>>>>>> I can get them work again by unplugging them and plugging back (= leaving >>>>>>>> the TBT16 dock connected). Also if you run lspci when the proble= m >>>>>>>> occurs it still shows the dock so PCIe link stays up. >>>>>>> >>>>>>> Re-connecting the USB devices does not help here, but I still sus= pect it=E2=80=99s >>>>>>> the same issue. >>>>>> >>>>>> Yeah, sounds like so. Did you try to connect the device (mouse, >>>>>> keyboard) to another USB port? >>>>> >>>>> I do not think I did, but I can=E2=80=99t remember. Next week would= be the next chance >>>>> to test this. >>>>> >>>>>>> Yesterday, I had my hand on a Dell XPS 13 7390 (10th Intel genera= tion) and >>>>>>> tried it with the shipped Ubuntu 18.04 LTS. There, the problem wa= s not >>>>>>> always reproducible, but it still happened. Sometimes, only one o= f the USB >>>>>>> device (either keyboard or mouse) stopped working. >>>>>> >>>>>> I suppose this is also with the TB16 dock connected, correct? >>>>> >>>>> Correct. >>>>> >>>>> Can I ask again, how the USB devices connected to the dock can be l= isted on >>>>> the command line? lsusb needs to be adapted for that or is a differ= ent >>>>> mechanism needed? >>>> >>>> The TB16 dock has ASMEDIA xHCI controller, which is PCIe device so y= ou >>>> can see it by running lsusb and looking at the devices under that >>>> controller. I think maybe 'lsusb -t' is helpful. >>>> >>>> The xHCI controller itself you can see by running lspci. >>> >>> I got traces from the ASMedia xHC controller in the TB16 dock. >> >> Nice. Thank you for looking into that. How can these traces be capture= d? >=20 > The Linux tracepoints added to the xhci driver can be enabled by: >=20 > mount -t debugfs none /sys/kernel/debug > echo 81920 > /sys/kernel/debug/tracing/buffer_size_kb > echo 1 > /sys/kernel/debug/tracing/events/xhci-hcd/enable > < Trigger the issue > >=20 > Copy traces found in /sys/kernel/debug/tracing/trace >=20 > Trace file grows fast. >>> There are issues with split transactions between the ASMedia host and= the 7 port >>> High speed hub built in to the dock. >>> >>> host reports a split transaction error for mouse or keyboard full-spe= ed/low-speed >>> interrupt transactions. Endpoint doesn't recover after resetting it. >>> >>> Split transaction allows full- and low-speed devices to be attached t= o high-speed >>> hubs, and are used only between the host and the HS hub. A transactio= n translator (TT) >>> in the HS hub will translate the high-speed split transactions on its= upstream port to >>> low/full speed transactions on the downstream port. >>> >>> I'll see if there are any xHC parameters driver is setting that trigg= er these >>> split transaction errors to trigger more easy. >> >> I always wonder how Microsoft Windows driver do it. >> >> Mario, should I contact the Dell support regarding this issue? Sorry for bothering, but were you able to find some workaround for this i= ssue? 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