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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 709ACC433F5 for ; Tue, 22 Mar 2022 18:03:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233389AbiCVSEb (ORCPT ); Tue, 22 Mar 2022 14:04:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232313AbiCVSEa (ORCPT ); Tue, 22 Mar 2022 14:04:30 -0400 Received: from netrider.rowland.org (netrider.rowland.org [192.131.102.5]) by lindbergh.monkeyblade.net (Postfix) with SMTP id DBD9814027 for ; Tue, 22 Mar 2022 11:03:01 -0700 (PDT) Received: (qmail 132790 invoked by uid 1000); 22 Mar 2022 14:03:00 -0400 Date: Tue, 22 Mar 2022 14:03:00 -0400 From: Alan Stern To: Petr Janecek Cc: alsa-devel@alsa-project.org, linux-usb@vger.kernel.org Subject: Re: Apogee ONEv2 keeps resetting Message-ID: References: <3f4d1bce-7459-9ea4-be73-9b51f569e526@ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3f4d1bce-7459-9ea4-be73-9b51f569e526@ucw.cz> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Sun, Mar 20, 2022 at 02:15:40AM +0100, Petr Janecek wrote: > Hi, > I'm trying to use Apogee ONEv2. From usb dumps under > macos or windows it seems like a usb Class Audio 2.0 > device, but in linux, it keeps resetting every two seconds > or so. It keeps resetting even when the snd-usb-audio > driver is disabled, so the problem is probably at a lower > level. Can you post the log output on a system where snd-usb-audio is disabled? > The messages below are from v5.16.16, but it behaves > the same no matter what I plug it into. > > [ 253.708616] usb 3-8: new high-speed USB device number 6 using xhci_hcd > [ 253.899363] usb 3-8: New USB device found, idVendor=0c60, idProduct=0017, > bcdDevice= 1.05 > [ 253.899370] usb 3-8: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [ 253.899373] usb 3-8: Product: ONEv2 > [ 253.899375] usb 3-8: Manufacturer: Apogee > [ 253.899377] usb 3-8: SerialNumber: 0C12FF2020204652334D513A7A2A9B > [ 253.960901] mc: Linux media interface: v0.10 Any idea where that line came from? You should try capturing a usbmon trace showing what happens when the device is plugged in and then resets. Preferably on a system where snd-usb-audio is disabled. One other thing you might try: Disable runtime PM for USB ("echo -1 >/sys/module/usbcore/parameters/autosuspend" before plugging in the device). Alan Stern