Hi, I have arduino nano (ch341) connected to my pc and after upgrading kernel to 5.5.x I am getting garbage instead of text while reading it (with both 5.5.1 and 5.5.2 kernels): Feb 4 09:24:20 sopa read.pl[2070]: StX.XXA(aurXXXŅstXC#021XX XJXR FuX,#027XX#005 Feb 4 09:24:20 sopa read.pl[2070]: XtX,+XX HXX#026XX go.XXRXXXXXng*Xery XXX5XUXiXY'XX4 Feb 4 09:24:20 sopa read.pl[2070]: XP5逮#013XXteXX11XS4 Feb 4 09:24:20 sopa read.pl[2070]: XP5逮#013XXhuXZ.XX=6SHX#005XAXXXpXKVX}XXt=MXXj Feb 4 09:24:20 sopa read.pl[2070]: DXUu X#013X-XXXXXeXNMSX Feb 4 09:24:20 sopa read.pl[2070]: XP)}XNXC with 5.4.17 I get: Feb 4 22:43:10 sopa read.pl[2040]: Started (auriol_last) Feb 4 22:43:11 sopa read.pl[2040]: Reporting every 300s Feb 4 22:43:11 sopa read.pl[2040]: Uptime: 60 Feb 4 22:43:11 sopa read.pl[2040]: DATA: sopa-temp=11.21 Feb 4 22:43:11 sopa read.pl[2040]: DATA: sopa-humidity=60 Feb 4 22:43:11 sopa read.pl[2040]: DATA: sopa-dewpoint=3.68 Feb 4 22:43:11 sopa read.pl[2040]: DATA: sopa-pressure=97136 Feb 4 22:43:11 sopa read.pl[2040]: DATA_END any suggestions? jn 00:15.0 USB controller: Intel Corporation Device 31a8 (rev 03) (prog-if 30 [XHCI]) Subsystem: ASRock Incorporation Device 31a8 Flags: bus master, medium devsel, latency 0, IRQ 126 Memory at a1300000 (64-bit, non-prefetchable) [size=64K] Capabilities: [70] Power Management version 2 Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+ Capabilities: [90] Vendor Specific Information: Len=14 <?> Kernel driver in use: xhci_hcd Bus 001 Device 003: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x1a86 QinHeng Electronics idProduct 0x7523 HL-340 USB-Serial adapter bcdDevice 2.63 iManufacturer 0 iProduct 2 USB2.0-Serial iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 39 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 482mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 2 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 1 Device Status: 0x0000 (Bus Powered)
