Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-signed-hwe-5.13 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1959110
Title:
pl2303 serial adapter no longer recognized
Status in linux-signed-hwe-5.13 package in Ubuntu:
Confirmed
Bug description:
Hi,
After upgrading the Linux kernel to 5.13.0-27 my pl2303 device stopped
working.
Error from dmesg:
jan 26 07:39:24 semalx0017 kernel: Linux version 5.13.0-27-generic
(buildd@lgw01-amd64-045) (gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, GNU ld (GNU
Binutils for Ubuntu) 2.34) #29~20.04.1-Ubuntu SMP Fri Jan 14 00:32:30 UTC 2022
(Ubuntu 5.13.0>
...
jan 26 07:39:24 semalx0017 kernel: pl2303 3-5.1.3:1.0: pl2303 converter
detected
jan 26 07:39:24 semalx0017 kernel: pl2303 3-5.1.3:1.0: unknown device type,
please report to linux-...@vger.kernel.org
This works fine in the previous 5.11.0-27-generic kernel.
Probably this patch needs backporting
"USB: serial: pl2303: fix GC type detection"
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=aa5721a9e0c9fb8a4bdfe0c8751377cd537d6174
lsusb:
Bus 003 Device 012: ID 067b:23a3 Prolific Technology, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x067b Prolific Technology, Inc.
idProduct 0x23a3
bcdDevice 1.05
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.13.0-27-generic:amd64 5.13.0-27.29~20.04.1
ProcVersionSignature: Ubuntu 5.11.0-27.29~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: Unity
Date: Wed Jan 26 15:11:11 2022
InstallationDate: Installed on 2022-01-24 (2 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
SourcePackage: linux-signed-hwe-5.13
UpgradeStatus: No upgrade log present (probably fresh install)
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