so I was using email and clicked on a link last night. the chrome window came up, I started to move my mouse to the window, and the mouse froze.. for about 10 seconds, I moved it and it froze again. After a few rounds of this I went to a terminal window to see what is going on. I did my usual"sudo su" and typed in my password.. came back invalid.. after 3 times doing this ( usuing the same password I just logged in with) it locked me out. So I logged out, logged in with XFCE4, ran another terminal, and was successful doing the same sudo su command. Today I am logged back in with no problems SO far.. looking at syslog I see... about that time: Sep 19 20:32:56 pauls-server kernel: [43919.230270] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.243176] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.257043] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.271533] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.285273] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.299263] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.313130] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.327245] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 Sep 19 20:32:56 pauls-server kernel: [43919.341235] logitech-djreceiver 0003:046 D:C52B.00ED: can't reset device, 0000:00:12.2-4.1/input2, status -71 then this: Sep 19 20:33:07 pauls-server mtp-probe: checking bus 1, device 58: "/sys/devices /pci0000:00/0000:00:12.2/usb1/1-4/1-4.1" Sep 19 20:33:07 pauls-server mtp-probe: bus: 1, device: 58 was not an MTP device Sep 19 20:33:11 pauls-server kernel: [43934.494398] hub 1-4:1.0: port 1 disabled by hub (EMI?), re-enabling... then more Sep 19 20:33:23 pauls-server mtp-probe: bus: 1, device: 60 was not an MTP device Sep 19 20:33:38 pauls-server kernel: [43961.355985] hub 1-4:1.0: port 1 disabled by hub (EMI?), re-enabling... Sep 19 20:33:38 pauls-server kernel: [43961.356351] usb 1-4.1: USB disconnect, d evice number 60 Sep 19 20:33:43 pauls-server kernel: [43966.244265] logitech-djreceiver 0003:046 D:C52B.0106: can't reset device, 0000:00:12.2-4.1/input2, status -110 Sep 19 20:33:43 pauls-server kernel: [43966.478324] usb 1-4.1: new full-speed US B device number 61 using ehci-pci it seems to be doing the same thing over & over.. Sep 19 20:34:07 pauls-server kernel: [43990.008344] hub 1-4:1.0: port 1 disabled by hub (EMI?), re-enabling... Sep 19 20:34:07 pauls-server kernel: [43990.008708] usb 1-4.1: USB disconnect, d evice number 64 Sep 19 20:34:11 pauls-server kernel: [43994.752472] logitech-djreceiver 0003:046 D:C52B.011A: can't reset device, 0000:00:12.2-4.1/input2, status -110 Sep 19 20:34:12 pauls-server kernel: [43994.978539] usb 1-4.1: new full-speed US B device number 65 using ehci-pci and it goes on & on for a few minutes doing this can't reset.... what happened??? -- Paul Cartwright Registered Linux User #367800 and new counter #561587