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=-9.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 660C7C4338F for ; Sun, 22 Aug 2021 07:11:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3F0156125F for ; Sun, 22 Aug 2021 07:11:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230272AbhHVHMe (ORCPT ); Sun, 22 Aug 2021 03:12:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:35128 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229934AbhHVHMa (ORCPT ); Sun, 22 Aug 2021 03:12:30 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id 111C461206 for ; Sun, 22 Aug 2021 07:11:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629616310; bh=uJUnAtS9ndiuN/XguGKR0z2MRgzJaTJfANKenfHb+pY=; h=From:To:Subject:Date:From; b=poT1Tjdpp6MGCdsqsGB2Kbg1H9uMfqAZFP4VaHvokJgJT36lDr+yn/X7F8yx8zYVl a8EuokrIJyCzC24QjiC6di9fGf5iyJ4MsNB5wRUw4WQDI2ueTSXjJx7bxcUBUVsMQB HviB4NDbNLtjD2+h4Z0dGWS+/1N+IhV6ezrU4vY0LQYxZ0xC/IAqJpCoDhR+EhfpZY uCIvZhHO9Ls5pafeHGybjn4aVIULPZkpUupBmgkmnSiBvqaSzOF05/Wp0e1yH9AUD9 /3FTYnMAMTYw3kudhCw+Ml9xgp/JzcHFWeBw1tPqRed64x6iD4Fj/J/CQ+gC2scMvq fOGIwf5YMpw6Q== From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 214131] New: ch341 communication problem Date: Sun, 22 Aug 2021 07:11:49 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new 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: pb.g@gmx.de 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: bug_id short_desc product version cf_kernel_version rep_platform op_sys cf_tree bug_status bug_severity priority component assigned_to reporter cf_regression attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D214131 Bug ID: 214131 Summary: ch341 communication problem Product: Drivers Version: 2.5 Kernel Version: 5.14-rc5 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@kernel-bugs.kernel.org Reporter: pb.g@gmx.de Regression: No Created attachment 298411 --> https://bugzilla.kernel.org/attachment.cgi?id=3D298411&action=3Dedit captured communication Several users reported their USB-Serial Adapter based on ch341 driver does = not communicate correctly anymore with kernels somewhere above 5.10.56-1.=20=20 The problem is that flashing an ESP8266 board is not possible anymore with Arduino IDE resulting in a=20 "/dev/ttyUSB0 failed to connect: Failed to connect to ESP8266: Timed out waiting for packet header" error. I can confirm this issue up to kernel 5.14-rc5.=20 Downgrading my kernel to 5.10.52 also solves the problem. I attached two communication samples from github user jypma. The issue is was discussed here: https://github.com/espressif/esptool/issues/653 --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=