Running 14.04.3 Ubuntu Desktop on old HP 8510w laptop with USB 2.0 ports only.
Hi, looking at /var/log/syslog or executing dmesg | tail
yields the same warning on the constant reset of USB device 008, which apparently is a parallel port.
$ dmesg | tail
[13820.044078] usb 2-3.1.2: reset full-speed USB device number 8 using ehci-pci
[13823.116151] usb 2-3.1.2: reset full-speed USB device number 8 using ehci-pci
[13825.419253] [UFW AUDIT] IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=727 DF PROTO=TCP SPT=40729 DPT=9058 WINDOW=43690 RES=0x00 SYN URGP=0
[13825.419268] [UFW AUDIT] IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=727 DF PROTO=TCP SPT=40729 DPT=9058 WINDOW=43690 RES=0x00 SYN URGP=0
[13825.932046] usb 2-3.1.2: reset full-speed USB device number 8 using ehci-pci
[13828.236068] usb 2-3.1.2: reset full-speed USB device number 8 using ehci-pci
[13829.566026] [UFW ALLOW] IN= OUT=eth0 SRC=192.168.1.36 DST=76.74.178.246 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=14119 DF PROTO=TCP SPT=41592 DPT=8080 WINDOW=29200 RES=0x00 SYN URGP=0
[13831.052112] usb 2-3.1.2: reset full-speed USB device number 8 using ehci-pci
[13834.124069] usb 2-3.1.2: reset full-speed USB device number 8 using ehci-pci
[13836.940083] usb 2-3.1.2: reset full-speed USB device number 8 using ehci-pci
$ lsusb | grep "Device 008"
Bus 002 Device 008: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel Port
EDIT:
From the Prolific Tech's website:
The PL2305 integrated circuit provides a bi-directional bridge between the Universal Serial Bus (USB) system and IEEE-1284 parallel port printers.
I am not sure whether this is in any way the symptom of a USB port failing or whether it is rather a hardware problem of the USB to parallel port converter cable itself.
Can somebody help with a solution if there is one ? Tx.