From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qv1-f48.google.com (mail-qv1-f48.google.com [209.85.219.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3FD567082D for ; Sun, 19 Oct 2025 15:43:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760888591; cv=none; b=ECfP5aI4cchEHU5fkEodQ2qFCDJWBO0wvNwmFocwoNkZQryX6xRt6J7Ge5UnX/jlR7j1dhUg/uD95l3yz9FH+a9pYY0KRhjKgXMs5F1LeiqUo/oigQ7NqUVN6H0lamWt15Y7rLRnd2NYdE6QBq4+Tsb5nzhr744sXmxWs9Km/c0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760888591; c=relaxed/simple; bh=VQ497iYA5fWuIs9gGK7e2BMuosuAL51wy9H9qwnogm8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=V0jpVBc7Dfw4uMEmXu2JDX9YNtyNfiAi35Wj4I+5dgtgsYrfHx/SaLkPmoBWNZYzbwQTTk4m1h/p8t0JTR61VuKjmPkxUukjDswErGo4KSzg0iiULwrfMlLn7hCLptQK95tTUiKUdaRGMQGOatRsZI8ouOIQbHzI99lirFXcJc8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rowland.harvard.edu; spf=fail smtp.mailfrom=g.harvard.edu; dkim=pass (2048-bit key) header.d=rowland.harvard.edu header.i=@rowland.harvard.edu header.b=aMPOySrg; arc=none smtp.client-ip=209.85.219.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rowland.harvard.edu Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=g.harvard.edu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rowland.harvard.edu header.i=@rowland.harvard.edu header.b="aMPOySrg" Received: by mail-qv1-f48.google.com with SMTP id 6a1803df08f44-87c1f607e72so51899066d6.0 for ; Sun, 19 Oct 2025 08:43:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rowland.harvard.edu; s=google; t=1760888589; x=1761493389; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=0peezqQc55okGkFITmR7T6/g2bRwPnKR8F0HghVyajw=; b=aMPOySrg0W6qrB4JGEOjflHwwWqE7Iw0Sm5EwyzzmcBiX0Axo0gj908kBA97zM/fqq DTi0ukGx+d3l/IWjIPkFRxdlJZjT1CEyLKd9yD6+yrpnZ1hyJhGj038Mi/srwDWeCBJC 3qsWTajTW98xjjJxG2Qt8C4TgSHYpLNtFkDw1AuFO25VzI0Q+RkwH9t12c49TSede4/N RogrZTyVMiyLuDqzlyOwwvge0Ds39HIUgXihhdiL2qc/1oX1utC2Y4ddUaenUKHlgkRK jaAwNiYGkcBIV3iBUCuTl7Rf84iiXBte+acDP66nhJTO+Ofw2EBxT9C0oR4BETDDjaS+ F0Qw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760888589; x=1761493389; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=0peezqQc55okGkFITmR7T6/g2bRwPnKR8F0HghVyajw=; b=FF70UkecSIgOjKW+asXJi6/F7WwU8JpTtdGCAEtakUAcGYZQQRmb7rVcnPnfQZyWuy GO68wzF4qWPH+P9MLvlpT2rhMsL8C5A06cq1oxxQ5Vp16keOOTsD76KS7Duh/DQCveIE F2G/yT2CuembzvuY6+Ep8rBTvmFhh8RMp2/c/v+dhJkmNvfRvheXAlu3l1aTXxhHNzPN XKX369Jcfe1iAjJArMMQk+e2T3Kr6mCyW67ihVUh+vY5yzCDC0PorxJX0zb8fSt1CVSv cH3phePMFcBrTEaOCgx1EenK9PQTazhuzqN9FMn75JeM75ArSSfSu6dGLD3VS98mCrgP 4fiA== X-Gm-Message-State: AOJu0YzIAdk9nD4DFx1UP7is+i3h7j6Eb1ISdzkeWzYlVmyESxZyn9eV ymCcVC8JBKPMMcxmC+uyCVAFUAjHS9I2DWLnZqLMAeBQaMqrci8hjkvqT/THSzmdB7MDluYCvRJ RETQ= X-Gm-Gg: ASbGncuDdjCpy1RmNpHtvWfbaJz5HlKXUlzAeWt5+A35GfTFljFvXvIZKyt/R+7pAOu IUnb6TjAbGVf9+tk4LbBfWULDaV0oXaRXLEdrUR56PhZbPJgKVOuvubkIuti88pQZv3HSV8nvFF H5Wjynfke0bvChhwFs6HyAND6Hwb9aJ/5tD1cqGcJ8XhG0FyEh1ux6cds9tbvQpdGO5sqmwqKHw XkYMwkBXRqx+TvfHrJ7VTNCbZdvq4HjAVCt4/gksuUhQxHN3Wb7pj9RhYVQkCuoCax/iME13C7C BffMcMFOvm09s0qVBKSkq5asL41JmL7IFY+ytv7a4EKiHdAubAGSqLAqVtoTeolN5gzVEJTnUUk RGZRRWo1KUNcFP8Kgmx7eQyGmaxBbK52mUVS+fqHuhcrjjjmU1wDxTsN70ylH3BjVAU3gw1xhPQ sOPQ== X-Google-Smtp-Source: AGHT+IFJNeVlNeQaKAFbAbmAfc5xHD7w4+29Ja1zGEQUB0jK7b1zaHKTAdtS+rLpuXzpatbERe2YuA== X-Received: by 2002:a05:6214:2465:b0:78e:2582:fe4 with SMTP id 6a1803df08f44-87c202feddemr122905976d6.30.1760888588945; Sun, 19 Oct 2025 08:43:08 -0700 (PDT) Received: from rowland.harvard.edu ([2601:19b:d03:1700::a165]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-87d028a9a48sm34042436d6.43.2025.10.19.08.43.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Oct 2025 08:43:08 -0700 (PDT) Date: Sun, 19 Oct 2025 11:43:05 -0400 From: Alan Stern To: Julian Sikorski Cc: USB list Subject: Re: USB A 3.0 port on Asus Zenbook not recognising the TipToi pen Message-ID: References: <1393a6c5-3430-49cb-95e6-b18c0f5328b0@gmail.com> 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: <1393a6c5-3430-49cb-95e6-b18c0f5328b0@gmail.com> On Sun, Oct 19, 2025 at 08:34:27AM +0200, Julian Sikorski wrote: > Hello, > > disclaimer: this is not linux-specific as Windows 11 also fails to recognise > the devices, but maybe someone has ideas regarding the causes here. > I have two TipToi Pens by Ravensburger. These are recognised as > > 04d6:e101 Mentor Graphics usbdisk > > when plugged into USB C port via USB C to micro B cable. When plugged into > the USB A port, the following messages are reported into the journal: > > Okt 19 08:19:08 kernel: usb usb3-port2: Cannot enable. Maybe the USB cable > is bad? > Okt 19 08:19:09 kernel: usb usb3-port2: Cannot enable. Maybe the USB cable > is bad? > Okt 19 08:19:09 kernel: usb usb3-port2: attempt power cycle > Okt 19 08:19:10 kernel: usb usb3-port2: Cannot enable. Maybe the USB cable > is bad? > Okt 19 08:19:11 kernel: usb usb3-port2: Cannot enable. Maybe the USB cable > is bad? > Okt 19 08:19:11 kernel: usb usb3-port2: unable to enumerate USB device > > I have two pens. I tried two cables delivered with them, as well as a > different USB A to micro B cable I had. All exhibit the same issue. > Does anyone have any ideas what could be the problem? My first guess is that > both the laptop and the pen are slightly off-spec in some strange way, which > causes them not to work together. The USB A slot on the laptop works fine > with other devices, and the pen works with the laptop if connected to USB C. Have you tried using the pens on a different computer? Alan Stern