On Tue, Jul 27, 2021 at 02:37:23PM +0200, Chris wrote: > This problem was introduced with 5.13 and still persists in 5.13.5 > After downgrading to 5.12.x, everything works like expected. Tested on > archlinux. The device is an "ICP-DAS I-7561" Thanks for reporting this. > lsusb -v > > Bus 002 Device 002: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port / Mobile Action MA-8910P > Couldn't open device, some information will be missing > > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 0 > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x067b Prolific Technology, Inc. > idProduct 0x2303 PL2303 Serial Port / Mobile Action MA-8910P > bcdDevice 5d.ca This is an unexpected device version (93.202) which may need to add a special case for. The descriptors look just fine otherwise and matches for example an HXD device I have here (with bcdDevice 4.00) but I guess it could also be an HX or earlier. Do you have any idea what kind of chip this is? Johan
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