lamer98

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  1. Work driver is here https://github.com/SkyRocknRoll/CH341SER_LINUX Thanks the all.
  2. I have cubieboard2 nand chinese usb-modbus stik with ch340 chip. when I connet ch340 chip to usb cubieboard is freezed, ttyS0 is blocked. cubieboard is work but is very very slow, ssh is not disconnected but don't answer by my command. when I disconnect ch340 chip cubieboard will bee unfrozen but ttyS0 is blocked until I don't make hard (power) reset. Software reset is not unfroze ttyS0. I cannot found src for ch340 chip diver. Driver from china web is not compiling. uname -a Linux cubieboard2 4.14.18-sunxi #31 SMP Fri Feb 9 11:11:15 CET 2018 armv7l GNU/Linux dmesg [ 1129.203974] usb 4-1: new full-speed USB device number 4 using ohci-platform [ 1129.478105] usb 4-1: New USB device found, idVendor=1a86, idProduct=7523 [ 1129.478120] usb 4-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [ 1129.478126] usb 4-1: Product: USB2.0-Serial [ 1129.480407] ch341 4-1:1.0: ch341-uart converter detected [ 1129.493385] usb 4-1: ch341-uart converter now attached to ttyUSB0 [ 1210.401005] usb 4-1: USB disconnect, device number 4 [ 1210.402338] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 [ 1210.402462] ch341 4-1:1.0: device disconnected lsmod odule Size Used by cfg80211 376832 0 rfkill 20480 2 cfg80211 sun4i_gpadc_iio 16384 0 8188eu 589824 0 sun4i_ts 16384 0 sun4i_codec 32768 3 ch341 16384 0 snd_soc_core 118784 1 sun4i_codec usbserial 24576 1 ch341 ir_lirc_codec 16384 0 evdev 20480 1 lirc_dev 16384 1 ir_lirc_codec snd_pcm_dmaengine 16384 1 snd_soc_core snd_pcm 65536 2 snd_pcm_dmaengine,snd_soc_core snd_timer 24576 1 snd_pcm snd 45056 3 snd_timer,snd_soc_core,snd_pcm soundcore 16384 1 snd sun4i_gpadc 16384 0 nvmem_sunxi_sid 16384 0 sunxi_cir 16384 0 sun4i_ss 24576 0 uio_pdrv_genirq 16384 0 uio 16384 1 uio_pdrv_genirq bonding 94208 0 fuse 73728 1 Any help or suggestion? Thanks, Vlad