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=-6.0 required=3.0 tests=MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 86BFBC433DF for ; Sun, 28 Jun 2020 17:50:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5D5782076C for ; Sun, 28 Jun 2020 17:50:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726373AbgF1Ru1 convert rfc822-to-8bit (ORCPT ); Sun, 28 Jun 2020 13:50:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:44338 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726059AbgF1Ru1 (ORCPT ); Sun, 28 Jun 2020 13:50:27 -0400 From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 208353] Distorted Audio Output Through USB C Docking Station Date: Sun, 28 Jun 2020 17:50:26 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: stern@rowland.harvard.edu X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=208353 --- Comment #1 from Alan Stern (stern@rowland.harvard.edu) --- Bring this to the attention of the person who wrote the offending commit: On Sun, Jun 28, 2020 at 03:19:06PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=208353 > > Bug ID: 208353 > Summary: Distorted Audio Output Through USB C Docking Station > Product: Drivers > Version: 2.5 > Kernel Version: 5.4.49 > Hardware: All > OS: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: USB > Assignee: drivers_usb@kernel-bugs.kernel.org > Reporter: pbui@kernel.bx612.space > Regression: No > > Created attachment 289909 > --> https://bugzilla.kernel.org/attachment.cgi?id=289909&action=edit > Output of alsa-info.sh > > With kernel 5.4.49 the audio output through my Dell WD19 Docking station is > now > laggy and distorted (sounds like only bass frequencies are emitted). > Previously, audio output through the dock worked just fine with all versions > of > 4.19.x and 5.4.x. > > After looking through the changelog for 5.4.49, I was able to locate the > offending patch: > > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/patch/?id=aba41867dd66939d336fdf604e4d73b805d8039f This is upstream commit f0bd62b64016 ("ALSA: usb-audio: Improve frames size computation"). Alan Stern > Reverting this patch allows audio to play normally through my docking > station. -- You are receiving this mail because: You are watching the assignee of the bug.