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([2a01:41e3:502f:e200:4a9:7423:73cd:3b4]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-63c4942f63dsm12071352a12.20.2025.10.22.06.25.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 22 Oct 2025 06:25:59 -0700 (PDT) Message-ID: <1a960051-b1e8-49a5-bdea-1ddd719cd0ec@gmail.com> Date: Wed, 22 Oct 2025 15:25:59 +0200 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: USB A 3.0 port on Asus Zenbook not recognising the TipToi pen To: Alan Stern Cc: USB list References: <1393a6c5-3430-49cb-95e6-b18c0f5328b0@gmail.com> <967e7681-c9ff-4421-ba89-d83bb40f1af3@gmail.com> <4c6bbcd1-0ed2-496d-82c4-3fc9a1c2660e@rowland.harvard.edu> Content-Language: en-US From: Julian Sikorski In-Reply-To: <4c6bbcd1-0ed2-496d-82c4-3fc9a1c2660e@rowland.harvard.edu> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Am 21.10.25 um 18:01 schrieb Alan Stern: > On Tue, Oct 21, 2025 at 04:44:24PM +0200, Julian Sikorski wrote: >> Am 19.10.25 um 17:43 schrieb Alan Stern: >>> 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 >> >> 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 15:18:53 kernel: usb 3-2: new high-speed USB device number 7 using xhci_hcd Okt 22 15:18:53 kernel: usb 3-2: New USB device found, idVendor=0451, idProduct=8142, bcdDevice= 1.00 Okt 22 15:18:53 kernel: usb 3-2: New USB device strings: Mfr=0, Product=0, SerialNumber=1 Okt 22 15:18:53 kernel: usb 3-2: SerialNumber: yyyy Okt 22 15:18:53 kernel: hub 3-2:1.0: USB hub found Okt 22 15:18:53 kernel: hub 3-2:1.0: 4 ports detected Okt 22 15:18:53 kernel: usb 4-2: new SuperSpeed USB device number 3 using xhci_hcd Okt 22 15:18:53 kernel: usb 4-2: New USB device found, idVendor=0451, idProduct=8140, bcdDevice= 1.00 Okt 22 15:18:53 kernel: usb 4-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0 Okt 22 15:18:53 kernel: hub 4-2:1.0: USB hub found Okt 22 15:18:53 kernel: hub 4-2:1.0: 4 ports detected Okt 22 15:18:54 kernel: usb 3-2.4: new high-speed USB device number 8 using xhci_hcd Okt 22 15:18:54 kernel: usb 3-2.4: New USB device found, idVendor=0451, idProduct=8142, bcdDevice= 1.00 Okt 22 15:18:54 kernel: usb 3-2.4: New USB device strings: Mfr=0, Product=0, SerialNumber=1 Okt 22 15:18:54 kernel: usb 3-2.4: SerialNumber: yyyy Okt 22 15:18:54 kernel: hub 3-2.4:1.0: USB hub found Okt 22 15:18:54 kernel: hub 3-2.4:1.0: 4 ports detected Okt 22 15:18:54 kernel: usb 4-2.4: new SuperSpeed USB device number 4 using xhci_hcd Okt 22 15:18:54 kernel: usb 4-2.4: New USB device found, idVendor=0451, idProduct=8140, bcdDevice= 1.00 Okt 22 15:18:54 kernel: usb 4-2.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0 Okt 22 15:18:54 kernel: hub 4-2.4:1.0: USB hub found Okt 22 15:18:54 kernel: hub 4-2.4:1.0: 4 ports detected Okt 22 15:18:54 kernel: usb 3-2.4.3: new full-speed USB device number 9 using xhci_hcd Okt 22 15:18:54 kernel: usb 3-2.4.3: New USB device found, idVendor=0451, idProduct=ca01, bcdDevice= 1.00 Okt 22 15:18:54 kernel: usb 3-2.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Okt 22 15:18:54 kernel: usb 3-2.4.3: Product: Texas Instruments USBtoI2C Solution Okt 22 15:18:54 kernel: usb 3-2.4.3: Manufacturer: Texas Instruments Okt 22 15:18:54 kernel: [35B blob data] Okt 22 15:18:54 kernel: hid-generic 0003:0451:CA01.0004: hiddev96,hidraw1: USB HID v1.00 Device [Texas Instruments Texas Instruments USBtoI2C Solution] on usb-0000:04:00.4-2.4.3/input0 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 Best regards, Julian