From: Ulrich Stoehlker <ustoehlker@yahoo.de>
To: linux-usb@vger.kernel.org
Subject: pl2303 converter - unknown device type
Date: Tue, 5 Aug 2025 07:07:03 +0000 (UTC) [thread overview]
Message-ID: <585146173.2802367.1754377623142@mail.yahoo.com> (raw)
In-Reply-To: 585146173.2802367.1754377623142.ref@mail.yahoo.com
Dear all,
I have a Multi-Channel-Analyzer (MCA) interfaced via usb.
This device cannot be used on more recent kernels.
I get the following error message:
[663822.490455] usb 1-3: new high-speed USB device number 17 using xhci_hcd
[663822.616495] usb 1-3: New USB device found, idVendor=0557, idProduct=2008, bcdDevice= 0.01
[663822.616501] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[663822.682309] usbcore: registered new interface driver usbserial_generic
[663822.682326] usbserial: USB Serial support registered for generic
[663822.686383] usbcore: registered new interface driver pl2303
[663822.686402] usbserial: USB Serial support registered for pl2303
[663822.686423] pl2303 1-3:1.0: pl2303 converter detected
[663822.686431] pl2303 1-3:1.0: unknown device type, please report to linux-usb@vger.kernel.org
Linux host1 6.8.0-64-generic #67~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Jun 24 15:19:46 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
But it works with older kernels:
Linux host2 5.10.103-v7+ #1529 SMP Tue Mar 8 12:21:37 GMT 2022 armv7l GNU/Linux
Would it be possible to correct this problem!?
Best regards
next parent reply other threads:[~2025-08-05 7:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <585146173.2802367.1754377623142.ref@mail.yahoo.com>
2025-08-05 7:07 ` Ulrich Stoehlker [this message]
2025-08-06 8:11 ` pl2303 converter - unknown device type Greg KH
2025-08-27 8:25 ` Johan Hovold
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