Bug 1029758

Summary:	cp210x usb serial port controller instant disconnect
Product:	[openSUSE] openSUSE Tumbleweed	Reporter:	Josua Mayer <josua.m>
Component:	Kernel	Assignee:	Oliver Neukum <oneukum>
Status:	RESOLVED DUPLICATE	QA Contact:	E-mail List <qa-bugs>
Severity:	Major
Priority:	P5 - None	CC:	agraf, josua.m, oneukum
Version:	Current
Target Milestone:	---
Hardware:	x86-64
OS:	Other
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Attachments:	complete dmesg rpm -qa \| sort

Description Josua Mayer 2017-03-16 16:57:23 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?

Comment 1 Josua Mayer 2017-03-16 17:01:33 UTC

Created attachment 717747 [details]
complete dmesg

Comment 2 Oliver Neukum 2017-03-21 22:34:14 UTC

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"

Comment 3 Josua Mayer 2017-03-22 07:06:32 UTC

Created attachment 718302 [details]
rpm -qa | sort

Comment 4 Oliver Neukum 2017-03-23 14:03:44 UTC

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 ***