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Wed, 22 Oct 2025 06:59:49 -0700 (PDT) Received: from rowland.harvard.edu ([140.247.181.15]) by smtp.gmail.com with ESMTPSA id af79cd13be357-891cc8d5d8bsm979539585a.8.2025.10.22.06.59.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Oct 2025 06:59:48 -0700 (PDT) Date: Wed, 22 Oct 2025 09:59:46 -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: <38586fb0-a60b-44c6-a04c-70f19ec36c61@rowland.harvard.edu> References: <1393a6c5-3430-49cb-95e6-b18c0f5328b0@gmail.com> <967e7681-c9ff-4421-ba89-d83bb40f1af3@gmail.com> <4c6bbcd1-0ed2-496d-82c4-3fc9a1c2660e@rowland.harvard.edu> <1a960051-b1e8-49a5-bdea-1ddd719cd0ec@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: <1a960051-b1e8-49a5-bdea-1ddd719cd0ec@gmail.com> On Wed, Oct 22, 2025 at 03:25:59PM +0200, Julian Sikorski wrote: > > > Am 21.10.25 um 18:01 schrieb Alan Stern: > > > > Have you tried using the pens on a different computer? > > > > > > > > Alan Stern > > > > > > Hi, > > > > > > I did, I just tried again to be sure - with the allegedly broken cable. This > > > is on my ASRock Fatal1ty B450 Gaming-ITX/ac front panel USB: > > > > > > Okt 21 16:42:00 kernel: usb 1-3: new high-speed USB device number 4 using > > > xhci_hcd > > > Okt 21 16:42:00 kernel: usb 1-3: New USB device found, idVendor=04d6, > > > idProduct=e101, bcdDevice= 1.00 > > ... > > > > That certainly indicates part of the problem is in the laptop. What > > happens if you try connecting one of the pens to the laptop through a > > USB hub? > > > > Alan Stern > > Through a hub (Dell Monitor) the pen works as well: > > Okt 22 15:19:57 kernel: usb 3-2.4.2: new high-speed USB device number 10 > using xhci_hcd > Okt 22 15:19:57 kernel: usb 3-2.4.2: New USB device found, idVendor=04d6, > idProduct=e101, bcdDevice= 1.00 > Okt 22 15:19:57 kernel: usb 3-2.4.2: New USB device strings: Mfr=1, > Product=2, SerialNumber=3 > Okt 22 15:19:57 kernel: usb 3-2.4.2: Product: usbdisk > Okt 22 15:19:57 kernel: usb 3-2.4.2: Manufacturer: anyka > Okt 22 15:19:57 kernel: usb 3-2.4.2: SerialNumber: xxxx > Okt 22 15:19:57 kernel: usb-storage 3-2.4.2:1.0: USB Mass Storage device > detected > Okt 22 15:19:57 kernel: scsi host2: usb-storage 3-2.4.2:1.0 > Okt 22 15:19:58 kernel: scsi 2:0:0:0: Direct-Access Tiptoi ZC3203L > 1.00 PQ: 0 ANSI: 2 > Okt 22 15:19:58 kernel: sd 2:0:0:0: Attached scsi generic sg0 type 0 > Okt 22 15:19:58 kernel: sd 2:0:0:0: [sda] 7013632 512-byte logical blocks: > (3.59 GB/3.34 GiB) > Okt 22 15:19:58 kernel: sd 2:0:0:0: [sda] Write Protect is off > Okt 22 15:19:58 kernel: sd 2:0:0:0: [sda] Mode Sense: 03 00 00 00 > Okt 22 15:19:58 kernel: sd 2:0:0:0: [sda] No Caching mode page found > Okt 22 15:19:58 kernel: sd 2:0:0:0: [sda] Assuming drive cache: write > through > Okt 22 15:19:59 kernel: sda: > Okt 22 15:19:59 kernel: sd 2:0:0:0: [sda] Attached SCSI removable disk Then I guess you have your answer. Something's slightly off in the laptop's USB controller or connector. If you still think it's a software issue rather than hardware, you can try posting a usbmon trace showing what happens when the device is plugged in. I suspect it won't reveal much, but you never know. Alan Stern Alan Stern