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 AB1D83BED6A for ; Thu, 2 Apr 2026 16:10:03 +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=1775146203; cv=none; b=asIFDlSrtFFr8YHhwrXpv6vjjcUc/Lw9i0MdEz8S+5iQtE5hH2X7NwPLayMjVOLN+r/1TqwaIHc9r8PU6iGc2DuOH1YvBwLbrIOiFKEe/XNw8mpm+IT93cm30XxjNCKbne/1e19yValGurm0A6IBLwVsc6fjiPW9APn9NHDD8BA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775146203; c=relaxed/simple; bh=o7FND2D4pFIz7VxcGBur+zmGez+Cubo/KfQ2ZYpTcm8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=XBXuk4TCe8FqYcsPhp+Wd+mYPnQ0TsQy44CggGTMPh38UbEtWquiuIKskK+1mDJ+4s+mZlk/Wq7htF2yWYQHJ3OnmsGc9oq9b0ZAyuf+DGl1qDGCyOYH1K7maQ1uQVeiKwIdwgBESpv8+Srx8wHzL3ic0jNLqdY0fDspepSQgMk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zpbAOnKR; 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="zpbAOnKR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC164C116C6; Thu, 2 Apr 2026 16:10:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1775146203; bh=o7FND2D4pFIz7VxcGBur+zmGez+Cubo/KfQ2ZYpTcm8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=zpbAOnKRO/JmqHvs0/mUc6muY9ts6yPW07So2u2GcQ4X61Nm5Uj5jbKfSbHqwfOMh AzG6R+5Q+9rxkx3qBqlh0+CZUcecR3XhoV0PSecZNiQ7XxrVMwz2xR0TFJIhYJEOXp uxTRAoIzI9CRlOcqCEPiyugd2g2Div3K+or0Eh/Y= Date: Thu, 2 Apr 2026 18:10:00 +0200 From: Greg KH To: "Fischer, Simon" Cc: "regressions@lists.linux.dev" Subject: Re: Lowspeed USB device enumerationg under 5.4.288, but not under 6.8.1 Message-ID: <2026040255-zone-chamomile-964f@gregkh> References: <8a29db20f78046578e8dc2c516607240@ipp.mpg.de> Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8a29db20f78046578e8dc2c516607240@ipp.mpg.de> On Thu, Apr 02, 2026 at 03:34:35PM +0000, Fischer, Simon wrote: > Dear list, > > I've tried to dig deeper into the issues, tried different quirks and small patches, but was unable to solve this or find the root cause. As this seems to be a regression of 6.8 from 5.4, I hope this is the correct list? 6.8.1 is not supported by anyone but canonical, so there's not much we can do here, sorry as that is a very old and obsolete kernel missing tens of thousands of changes. Can you try running the latest 6.19 release instead? thanks, greg k-h