Thank you very much for your answer.
The newest kernel that is in the standard Ubuntu 20.04 repositories is
today Linux 5.13.0-28-generic #31~20.04.1-Ubuntu SMP Wed Jan 19 14:08:10
UTC 2022 x86_64). After moving from 5.13.0-27-generic #29~20.04.1-Ubuntu
to the newest 5.13.0-28-generic #31~20.04.1-Ubuntu, the dmesg showed:
[Wed Feb 9 11:38:51 2022] usb 3-2: new full-speed USB device number 4
using xhci_hcd
[Wed Feb 9 11:38:51 2022] usb 3-2: New USB device found, idVendor=067b,
idProduct=23a3, bcdDevice= 1.05
[Wed Feb 9 11:38:51 2022] usb 3-2: New USB device strings: Mfr=1,
Product=2, SerialNumber=0
[Wed Feb 9 11:38:51 2022] usb 3-2: Product: ATEN USB to Serial Bridge
[Wed Feb 9 11:38:51 2022] usb 3-2: Manufacturer: Prolific Technology
Inc.
[Wed Feb 9 11:38:51 2022] usbcore: registered new interface driver
usbserial_generic
[Wed Feb 9 11:38:51 2022] usbserial: USB Serial support registered for
generic
[Wed Feb 9 11:38:51 2022] usbcore: registered new interface driver
pl2303
[Wed Feb 9 11:38:51 2022] usbserial: USB Serial support registered for
pl2303
[Wed Feb 9 11:38:51 2022] pl2303 3-2:1.0: unknown device type, please
report to linux-usb@xxxxxxxxxxxxxxx
A 5.4.0-99-generic #112~18.04.1-Ubuntu SMP Thu Feb 3 14:09:57 UTC 2022
x86_64 from a Ubuntu 18.04 recognizes the same adapter as a ttyUSB0
(which is what is needed to be used).
Unfortunately, the environment in which happened what I described below
has certain restrictions that don't allow me to try a newer kernel than
the newest that is in the standard Ubuntu repositories...
So, in my humble opinion, we will just have to wait for the 5.16 to
appear in the standard Ubuntu repositories.
Thank you again. Very much.
On 08.02.2022 12:15, Greg KH wrote:
On Thu, Jan 20, 2022 at 05:08:15PM +0200, Eduard-Bogdan Budai wrote:
Dear Sirs,
Today, when a USB-RJ45 adapter was conected to a computer running
Ubuntu
20.04.3 in its dmesg appeared:
[Thu Jan 20 15:24:17 2022] usb 1-3.1: new full-speed USB device
number 7
using xhci_hcd
[Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device found,
idVendor=067b,
idProduct=23a3, bcdDevice= 1.05
[Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device strings: Mfr=1,
Product=2, SerialNumber=0
[Thu Jan 20 15:24:17 2022] usb 1-3.1: Product: ATEN USB to Serial
Bridge
[Thu Jan 20 15:24:17 2022] usb 1-3.1: Manufacturer: Prolific
Technology Inc.
[Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: pl2303 converter
detected
[Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: unknown device type,
please
report to linux-usb@xxxxxxxxxxxxxxx
The kernel version is 5.13.0-27-generic #29~20.04.1-Ubuntu.
Should be fixed in newer kernel versions, this is a quite old and
obsolete kernel version. Can you try 5.16?
thanks,
greg k-h
--
Eduard-Bogdan Budai
IT Hardware Cluj
it.cluj@xxxxxxxxxx
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