Bugzilla – Bug 1029758
cp210x usb serial port controller instant disconnect
Last modified: 2017-03-23 14:03:44 UTC
Since 4.10.0 both of my devices featuring a cp210x usb to serial converter stopped working. dmesg after connecting: [ 1467.142430] usb 1-1.1: new full-speed USB device number 7 using ehci-pci [ 1467.281679] usb 1-1.1: New USB device found, idVendor=10c4, idProduct=ea60 [ 1467.281682] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 1467.281683] usb 1-1.1: Product: CP2102 USB to UART Bridge Controller [ 1467.281684] usb 1-1.1: Manufacturer: Silicon Labs [ 1467.281685] usb 1-1.1: SerialNumber: 0001 [ 1467.289726] cp210x 1-1.1:1.0: cp210x converter detected [ 1467.291959] usb 1-1.1: cp210x converter now attached to ttyUSB0 [ 1467.383699] usb 1-1.1: usbfs: interface 0 claimed by cp210x while 'brltty' sets config #1 [ 1467.385369] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0 [ 1467.385403] cp210x 1-1.1:1.0: device disconnected As can be seen the ttyUSB0 appears to disconnect immediately, but I am not that fast. I have so far ruled out: 1) the cable (using windows on same pc, all good) 2) the device (using another PC running 42.2) Is anyone else seeing this? any ideas what to do about it?
Created attachment 717747 [details] complete dmesg
A braille reader takes the device. We actually already had a very similar bug. A package took over devices blindly. Please provide the output of "rpm -qa"
Created attachment 718302 [details] rpm -qa | sort
The issue with brltty taking devices is still open and also affects your device. *** This bug has been marked as a duplicate of bug 1007652 ***