I'm not able to paste into the konsole using ctrl+shift+V or using mouse (thrd button + paste):
a. the mouse disappear (for about 30 secs)
b. the operation fails (anything is pasted)
Sometimes also copy by ctrl+shift+C is not recognized and a Ctrl+C signal is thrown (killing any active process).

Reproducible: Sometimes

Steps to Reproduce:
check description



I've also noticed that the USB monitor camera (on different USB controller may cause some overload problem?)
Dmesg usb keyboard plugin:
[14205.801918] usb 3-1.4: new low-speed USB device number 5 using ehci-pci
[14205.914349] usb 3-1.4: New USB device found, idVendor=03f0, idProduct=034a
[14205.914351] usb 3-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[14205.914352] usb 3-1.4: Product: HP Elite USB Keyboard
[14205.914353] usb 3-1.4: Manufacturer: Chicony
[14205.923793] input: Chicony HP Elite USB Keyboard as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.4/3-1.4:1.0/0003:03F0:034A.0007/input/input22
[14205.977954] hid-generic 0003:03F0:034A.0007: input,hidraw1: USB HID v1.10 Keyboard [Chicony HP Elite USB Keyboard] on usb-0000:00:1a.0-1.4/input0
[14205.987076] input: Chicony HP Elite USB Keyboard as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.4/3-1.4:1.1/0003:03F0:034A.0008/input/input23
[14206.042046] hid-generic 0003:03F0:034A.0008: input,hidraw2: USB HID v1.10 Device [Chicony HP Elite USB Keyboard] on usb-0000:00:1a.0-1.4/input1
[14248.915535] plugin-containe[8661]: segfault at c ip 00007f69085b92a0 sp 00007f68fb296130 error 4 in libxul.so[7f6907a8b000+41df000]
[14719.165285] plugin-containe[19883]: segfault at c ip 00007fc4ee1772a0 sp 00007fc4ca8fe130 error 4 in libxul.so[7fc4ed649000+41df000]
[21281.747720] usb 1-1.1: USB disconnect, device number 7
[21710.240093] perf interrupt took too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[22014.709787] usb 1-1.1: new high-speed USB device number 8 using xhci_hcd
[22015.118256] usb 1-1.1: New USB device found, idVendor=04f2, idProduct=b513
[22015.118259] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[22015.118260] usb 1-1.1: Product: HP 720p HD Monitor Webcam
[22015.118261] usb 1-1.1: Manufacturer: Sunplus IT Co 
[22015.339493] uvcvideo: Found UVC 1.00 device HP 720p HD Monitor Webcam (04f2:b513)
[22015.359092] input: HP 720p HD Monitor Webcam as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input24
[22015.400822] usb 1-1.1: Warning! Unlikely big volume range (=4096), cval->res is probably wrong.
[22015.400824] usb 1-1.1: [5] FU [Mic Capture Volume] ch = 1, val = 0/4096/1