From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F40EBA33 for ; Wed, 1 Jan 2025 10:25:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735727137; cv=none; b=sV0zD+uqb7s5fv+73d5j2U6vhTPrgf4l+2q0BQdYI/F3F9WSkEguCqIlZYy4+1hqIz/vYQnTT7P3KyPH6eskTt5jDq/rsLF8Wq6TX4ddyxII1fU9CDoNbHW/LxsEbHvzM90msRvPYbjCk8t5XO45ZHESi/N3JWQZTWc5FZ69yIM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735727137; c=relaxed/simple; bh=r5eRrOOtfFAN9sEAdMEx7jkR6l/E4+MDDQFcCTHmMFI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=L+OiD/Vuaj/Vd/yNxzPQuwyN/1NOyevUdcmuWF7zxZ29Luq+xy+9B3Ehsh0c1uv4WBIraVPSvjDoOlFZCzzL8enAfxtJStv82XOHfUfcG3y2GBd4zBn7zQzqyhtjqYdva8kKui/QYysH0t8sHsLcUp8P2QiBK8Vu/EkdDB47RSI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=JLSyjOnh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="JLSyjOnh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 72878C4CED1; Wed, 1 Jan 2025 10:25:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1735727136; bh=r5eRrOOtfFAN9sEAdMEx7jkR6l/E4+MDDQFcCTHmMFI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=JLSyjOnh07qcS0Lpc+KPZXwhfDuCxYF/frw36D/hdiWQAnt7/hBqwySygb5VVh4Cn gLn8BS0mDZ+0Cl92mypjQYSGe3Gfi41kvBIcoc+nQKTAJHztZMHYc4oknB7dIzQE/8 pNiS9o88RDDu6Au8Kq3AakVbKhu8IhJQHYJXH0pM= Date: Wed, 1 Jan 2025 11:24:50 +0100 From: Greg KH To: Jate Sujjavanich Cc: linux-usb@vger.kernel.org Subject: Re: USB and EOL LTS Kernel Advice Message-ID: <2025010134-acetone-blazing-c9b2@gregkh> References: <2025010114-quicken-quickly-0411@gregkh> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2025010114-quicken-quickly-0411@gregkh> On Wed, Jan 01, 2025 at 11:18:51AM +0100, Greg KH wrote: > On Tue, Dec 31, 2024 at 09:59:45AM -0500, Jate Sujjavanich wrote: > > I have a device running the 4.19 LTS kernel which just went end of > > life. It has some USB signal integrity issues which result in "clear > > tt" loops until the bus can recover (if it can). This can result in > > system hangs including with lsusb. Also, this really sounds like a hardware issue, right? Why do you think this is a software issue? For USB, there's only so much the kernel can do when you have bad signals or electrical connections. Try running a more modern kernel and see if that helps, otherwise, I recommend fixing the hardware issues first :) thanks, greg k-h