[Nexus 7 Q&A, Help & Troubleshooting] Platinum1986:
I see no device connected at the right (launch bar). The Nexus 7 must be on the bootloader, right?

I did a:

dmesg

but the list is too long so i did this:

dmesg | grep -i usb

and here is the result:

[ 0.216934] ACPI: bus type USB registered
[ 0.216966] usbcore: registered new interface driver usbfs
[ 0.216981] usbcore: registered new interface driver hub
[ 0.217015] usbcore: registered new device driver usb
[ 1.055826] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.056014] ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 1
[ 1.071266] ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
[ 1.071331] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.071334] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.071336] usb usb1: Product: EHCI Host Controller
[ 1.071339] usb usb1: Manufacturer: Linux 3.16.0-77-generic ehci_hcd
[ 1.071341] usb usb1: SerialNumber: 0000:00:1a.0
[ 1.071509] hub 1-0:1.0: USB hub found
[ 1.071835] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 2
[ 1.087258] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[ 1.087314] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.087316] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.087319] usb usb2: Product: EHCI Host Controller
[ 1.087321] usb usb2: Manufacturer: Linux 3.16.0-77-generic ehci_hcd
[ 1.087324] usb usb2: SerialNumber: 0000:00:1d.0
[ 1.087498] hub 2-0:1.0: USB hub found
[ 1.087705] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.087741] uhci_hcd: USB Universal Host Controller Interface driver
[ 1.383076] usb 1-1: new high-speed USB device number 2 using ehci-pci
[ 1.516033] usb 1-1: New USB device found, idVendor=8087, idProduct=0024
[ 1.516036] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1.516334] hub 1-1:1.0: USB hub found
[ 1.626892] usb 2-1: new high-speed USB device number 2 using ehci-pci
[ 1.759266] usb 2-1: New USB device found, idVendor=8087, idProduct=0024
[ 1.759277] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1.759696] hub 2-1:1.0: USB hub found
[ 127.148971] usb 2-1.2: new full-speed USB device number 3 using ehci-pci
[ 127.220913] usb 2-1.2: device descriptor read/64, error -32
[ 127.396785] usb 2-1.2: device descriptor read/64, error -32
[ 127.572661] usb 2-1.2: new full-speed USB device number 4 using ehci-pci
[ 127.644611] usb 2-1.2: device descriptor read/64, error -32
[ 127.820489] usb 2-1.2: device descriptor read/64, error -32
[ 127.996359] usb 2-1.2: new full-speed USB device number 5 using ehci-pci
[ 128.404080] usb 2-1.2: device not accepting address 5, error -32
[ 128.476022] usb 2-1.2: new full-speed USB device number 6 using ehci-pci
[ 128.883740] usb 2-1.2: device not accepting address 6, error -32
[ 128.883854] usb 2-1-port2: unable to enumerate USB device
[ 1164.689944] usb 2-1.2: new full-speed USB device number 7 using ehci-pci
[ 1164.761892] usb 2-1.2: device descriptor read/64, error -32
[ 1164.937766] usb 2-1.2: device descriptor read/64, error -32
[ 1165.113648] usb 2-1.2: new full-speed USB device number 8 using ehci-pci
[ 1165.185595] usb 2-1.2: device descriptor read/64, error -32
[ 1165.361463] usb 2-1.2: device descriptor read/64, error -32
[ 1165.537339] usb 2-1.2: new full-speed USB device number 9 using ehci-pci
[ 1165.945049] usb 2-1.2: device not accepting address 9, error -32
[ 1166.017002] usb 2-1.2: new full-speed USB device number 10 using ehci-pci
[ 1166.424715] usb 2-1.2: device not accepting address 10, error -32
[ 1166.424838] usb 2-1-port2: unable to enumerate USB device
[ 1167.671834] usb 2-1.2: new full-speed USB device number 11 using ehci-pci
[ 1167.743778] usb 2-1.2: device descriptor read/64, error -32
[ 1167.919650] usb 2-1.2: device descriptor read/64, error -32
[ 1168.095525] usb 2-1.2: new full-speed USB device number 12 using ehci-pci
[ 1168.167482] usb 2-1.2: device descriptor read/64, error -32
[ 1168.343367] usb 2-1.2: device descriptor read/64, error -32
[ 1168.519237] usb 2-1.2: new full-speed USB device number 13 using ehci-pci
[ 1168.926938] usb 2-1.2: device not accepting address 13, error -32
[ 1168.998888] usb 2-1.2: new full-speed USB device number 14 using ehci-pci
[ 1169.406607] usb 2-1.2: device not accepting address 14, error -32
[ 1169.406837] usb 2-1-port2: unable to enumerate USB device
[ 1170.653717] usb 2-1.2: new full-speed USB device number 15 using ehci-pci
[ 1170.725665] usb 2-1.2: device descriptor read/64, error -32
[ 1170.901540] usb 2-1.2: device descriptor read/64, error -32
[ 1171.077414] usb 2-1.2: new full-speed USB device number 16 using ehci-pci
[ 1171.149379] usb 2-1.2: device descriptor read/64, error -32
[ 1171.325251] usb 2-1.2: device descriptor read/64, error -32
[ 1171.501120] usb 2-1.2: new full-speed USB device number 17 using ehci-pci
[ 1171.908831] usb 2-1.2: device not accepting address 17, error -32
[ 1171.980775] usb 2-1.2: new full-speed USB device number 18 using ehci-pci
[ 1172.388492] usb 2-1.2: device not accepting address 18, error -32
[ 1172.388674] usb 2-1-port2: unable to enumerate USB device
[ 1173.611623] usb 2-1.2: new full-speed USB device number 19 using ehci-pci
[ 1173.683570] usb 2-1.2: device descriptor read/64, error -32
[ 1173.859443] usb 2-1.2: device descriptor read/64, error -32
[ 1174.035317] usb 2-1.2: new full-speed USB device number 20 using ehci-pci
[ 1174.107268] usb 2-1.2: device descriptor read/64, error -32
[ 1174.283147] usb 2-1.2: device descriptor read/64, error -32
[ 1174.459019] usb 2-1.2: new full-speed USB device number 21 using ehci-pci
[ 1174.866726] usb 2-1.2: device not accepting address 21, error -32
[ 1174.938670] usb 2-1.2: new full-speed USB device number 22 using ehci-pci
[ 1175.346402] usb 2-1.2: device not accepting address 22, error -32
[ 1175.346491] usb 2-1-port2: unable to enumerate USB device
[ 1176.553538] usb 2-1.2: new full-speed USB device number 23 using ehci-pci
[ 1176.625484] usb 2-1.2: device descriptor read/64, error -32
[ 1176.801357] usb 2-1.2: device descriptor read/64, error -32
[ 1176.977233] usb 2-1.2: new full-speed USB device number 24 using ehci-pci
[ 1177.049183] usb 2-1.2: device descriptor read/64, error -32
[ 1177.225067] usb 2-1.2: device descriptor read/64, error -32
[ 1177.400937] usb 2-1.2: new full-speed USB device number 25 using ehci-pci
[ 1177.808651] usb 2-1.2: device not accepting address 25, error -32
[ 1177.880600] usb 2-1.2: new full-speed USB device number 26 using ehci-pci
[ 1178.288288] usb 2-1.2: device not accepting address 26, error -32
[ 1178.288430] usb 2-1-port2: unable to enumerate USB device
[ 1179.495452] usb 2-1.2: new full-speed USB device number 27 using ehci-pci
[ 1179.567400] usb 2-1.2: device descriptor read/64, error -32
[ 1179.743262] usb 2-1.2: device descriptor read/64, error -32
[ 1179.919156] usb 2-1.2: new full-speed USB device number 28 using ehci-pci
[ 1179.991091] usb 2-1.2: device descriptor read/64, error -32
[ 1180.166974] usb 2-1.2: device descriptor read/64, error -32
[ 1180.342855] usb 2-1.2: new full-speed USB device number 29 using ehci-pci
[ 1180.750564] usb 2-1.2: device not accepting address 29, error -32
[ 1180.822521] usb 2-1.2: new full-speed USB device number 30 using ehci-pci
[ 1181.230232] usb 2-1.2: device not accepting address 30, error -32
[ 1181.230430] usb 2-1-port2: unable to enumerate USB device
[ 1181.378102] usb 2-1.2: new full-speed USB device number 31 using ehci-pci
[ 1181.450066] usb 2-1.2: device descriptor read/64, error -32
[ 1181.625947] usb 2-1.2: device descriptor read/64, error -32
[ 1181.801819] usb 2-1.2: new full-speed USB device number 32 using ehci-pci
[ 1181.873778] usb 2-1.2: device descriptor read/64, error -32
[ 1182.049641] usb 2-1.2: device descriptor read/64, error -32
[ 1182.225542] usb 2-1.2: new full-speed USB device number 33 using ehci-pci
[ 1182.633227] usb 2-1.2: device not accepting address 33, error -32
[ 1182.705178] usb 2-1.2: new full-speed USB device number 34 using ehci-pci
[ 1183.112887] usb 2-1.2: device not accepting address 34, error -32
[ 1183.113077] usb 2-1-port2: unable to enumerate USB device
[ 1184.320033] usb 2-1.2: new full-speed USB device number 35 using ehci-pci
[ 1184.391982] usb 2-1.2: device descriptor read/64, error -32
[ 1184.567861] usb 2-1.2: device descriptor read/64, error -32
[ 1184.743733] usb 2-1.2: new full-speed USB device number 36 using ehci-pci
[ 1184.815694] usb 2-1.2: device descriptor read/64, error -32
[ 1184.991554] usb 2-1.2: device descriptor read/64, error -32
[ 1185.167431] usb 2-1.2: new full-speed USB device number 37 using ehci-pci
[ 1185.575142] usb 2-1.2: device not accepting address 37, error -32
[ 1185.647093] usb 2-1.2: new full-speed USB device number 38 using ehci-pci
[ 1186.054800] usb 2-1.2: device not accepting address 38, error -32
[ 1186.054906] usb 2-1-port2: unable to enumerate USB device
[ 1186.202710] usb 2-1.2: new full-speed USB device number 39 using ehci-pci
[ 1186.274647] usb 2-1.2: device descriptor read/64, error -32
[ 1186.450521] usb 2-1.2: device descriptor read/64, error -32
[ 1186.626399] usb 2-1.2: new full-speed USB device number 40 using ehci-pci
[ 1186.698347] usb 2-1.2: device descriptor read/64, error -32
[ 1186.874218] usb 2-1.2: device descriptor read/64, error -32
[ 1187.050099] usb 2-1.2: new full-speed USB device number 41 using ehci-pci
[ 1187.457807] usb 2-1.2: device not accepting address 41, error -32
[ 1187.529760] usb 2-1.2: new full-speed USB device number 42 using ehci-pci
[ 1187.937468] usb 2-1.2: device not accepting address 42, error -32
[ 1187.937568] usb 2-1-port2: unable to enumerate USB device
[ 1188.097370] usb 2-1.2: new full-speed USB device number 43 using ehci-pci
[ 1188.169306] usb 2-1.2: device descriptor read/64, error -32
[ 1188.345215] usb 2-1.2: device descriptor read/64, error -32
[ 1188.521064] usb 2-1.2: new full-speed USB device number 44 using ehci-pci
[ 1188.593010] usb 2-1.2: device descriptor read/64, error -32
[ 1188.768882] usb 2-1.2: device descriptor read/64, error -32
[ 1188.944755] usb 2-1.2: new full-speed USB device number 45 using ehci-pci
[ 1189.352467] usb 2-1.2: device not accepting address 45, error -32
[ 1189.424431] usb 2-1.2: new full-speed USB device number 46 using ehci-pci
[ 1189.832127] usb 2-1.2: device not accepting address 46, error -32
[ 1189.832329] usb 2-1-port2: unable to enumerate USB device
[ 1191.039274] usb 2-1.2: new full-speed USB device number 47 using ehci-pci
[ 1191.111227] usb 2-1.2: device descriptor read/64, error -32
[ 1191.287097] usb 2-1.2: device descriptor read/64, error -32
[ 1191.462969] usb 2-1.2: new full-speed USB device number 48 using ehci-pci
[ 1191.534920] usb 2-1.2: device descriptor read/64, error -32
[ 1191.710795] usb 2-1.2: device descriptor read/64, error -32
[ 1191.886671] usb 2-1.2: new full-speed USB device number 49 using ehci-pci
[ 1192.294399] usb 2-1.2: device not accepting address 49, error -32
[ 1192.366333] usb 2-1.2: new full-speed USB device number 50 using ehci-pci
[ 1192.774038] usb 2-1.2: device not accepting address 50, error -32
[ 1192.774174] usb 2-1-port2: unable to enumerate USB device
[ 1192.921943] usb 2-1.2: new full-speed USB device number 51 using ehci-pci
[ 1192.993888] usb 2-1.2: device descriptor read/64, error -32
[ 1193.169758] usb 2-1.2: device descriptor read/64, error -32
[ 1193.345637] usb 2-1.2: new full-speed USB device number 52 using ehci-pci
[ 1193.417586] usb 2-1.2: device descriptor read/64, error -32
[ 1193.593462] usb 2-1.2: device descriptor read/64, error -32
[ 1193.769337] usb 2-1.2: new full-speed USB device number 53 using ehci-pci
[ 1194.177063] usb 2-1.2: device not accepting address 53, error -32
[ 1194.248996] usb 2-1.2: new full-speed USB device number 54 using ehci-pci
[ 1194.656706] usb 2-1.2: device not accepting address 54, error -32
[ 1194.656827] usb 2-1-port2: unable to enumerate USB device
[ 1195.863855] usb 2-1.2: new full-speed USB device number 55 using ehci-pci
[ 1195.935803] usb 2-1.2: device descriptor read/64, error -32
[ 1196.111679] usb 2-1.2: device descriptor read/64, error -32
[ 1196.287555] usb 2-1.2: new full-speed USB device number 56 using ehci-pci
[ 1196.359502] usb 2-1.2: device descriptor read/64, error -32
[ 1196.535377] usb 2-1.2: device descriptor read/64, error -32
[ 1196.711261] usb 2-1.2: new full-speed USB device number 57 using ehci-pci
[ 1197.118963] usb 2-1.2: device not accepting address 57, error -32
[ 1197.190950] usb 2-1.2: new full-speed USB device number 58 using ehci-pci
[ 1197.598624] usb 2-1.2: device not accepting address 58, error -32
[ 1197.598743] usb 2-1-port2: unable to enumerate USB device
[ 1198.817761] usb 2-1.2: new full-speed USB device number 59 using ehci-pci
[ 1198.889710] usb 2-1.2: device descriptor read/64, error -32
[ 1199.065585] usb 2-1.2: device descriptor read/64, error -32
[ 1199.241460] usb 2-1.2: new full-speed USB device number 60 using ehci-pci
[ 1199.313407] usb 2-1.2: device descriptor read/64, error -32
[ 1199.489284] usb 2-1.2: device descriptor read/64, error -32
[ 1199.665161] usb 2-1.2: new full-speed USB device number 61 using ehci-pci
[ 1200.072869] usb 2-1.2: device not accepting address 61, error -32
[ 1200.144822] usb 2-1.2: new full-speed USB device number 62 using ehci-pci
[ 1200.552532] usb 2-1.2: device not accepting address 62, error -32
[ 1200.552618] usb 2-1-port2: unable to enumerate USB device
[ 1201.771665] usb 2-1.2: new full-speed USB device number 63 using ehci-pci
[ 1201.843617] usb 2-1.2: device descriptor read/64, error -32
[ 1202.019493] usb 2-1.2: device descriptor read/64, error -32
[ 1202.195369] usb 2-1.2: new full-speed USB device number 64 using ehci-pci
[ 1202.267315] usb 2-1.2: device descriptor read/64, error -32
[ 1202.443200] usb 2-1.2: device descriptor read/64, error -32
[ 1202.619070] usb 2-1.2: new full-speed USB device number 65 using ehci-pci
[ 1203.026778] usb 2-1.2: device not accepting address 65, error -32
[ 1203.098728] usb 2-1.2: new full-speed USB device number 66 using ehci-pci
[ 1203.506438] usb 2-1.2: device not accepting address 66, error -32
[ 1203.506623] usb 2-1-port2: unable to enumerate USB device
[ 1204.725574] usb 2-1.2: new full-speed USB device number 67 using ehci-pci
[ 1204.797527] usb 2-1.2: device descriptor read/64, error -32
[ 1204.973400] usb 2-1.2: device descriptor read/64, error -32
[ 1205.149271] usb 2-1.2: new full-speed USB device number 68 using ehci-pci
[ 1205.221259] usb 2-1.2: device descriptor read/64, error -32
[ 1205.397108] usb 2-1.2: device descriptor read/64, error -32
[ 1205.572977] usb 2-1.2: new full-speed USB device number 69 using ehci-pci
[ 1205.980685] usb 2-1.2: device not accepting address 69, error -32
[ 1206.052638] usb 2-1.2: new full-speed USB device number 70 using ehci-pci
[ 1206.460358] usb 2-1.2: device not accepting address 70, error -32
[ 1206.460571] usb 2-1-port2: unable to enumerate USB device
[ 1207.667494] usb 2-1.2: new full-speed USB device number 71 using ehci-pci
[ 1207.739443] usb 2-1.2: device descriptor read/64, error -32
[ 1207.915313] usb 2-1.2: device descriptor read/64, error -32
[ 1208.091193] usb 2-1.2: new full-speed USB device number 72 using ehci-pci
[ 1208.163142] usb 2-1.2: device descriptor read/64, error -32
[ 1208.339015] usb 2-1.2: device descriptor read/64, error -32
[ 1208.514893] usb 2-1.2: new full-speed USB device number 73 using ehci-pci
[ 1208.922604] usb 2-1.2: device not accepting address 73, error -32
[ 1208.994556] usb 2-1.2: new full-speed USB device number 74 using ehci-pci
[ 1209.402261] usb 2-1.2: device not accepting address 74, error -32
[ 1209.402380] usb 2-1-port2: unable to enumerate USB device
[ 1209.550156] usb 2-1.2: new full-speed USB device number 75 using ehci-pci
[ 1209.622107] usb 2-1.2: device descriptor read/64, error -32
[ 1209.797982] usb 2-1.2: device descriptor read/64, error -32
[ 1209.973858] usb 2-1.2: new full-speed USB device number 76 using ehci-pci
[ 1210.045806] usb 2-1.2: device descriptor read/64, error -32
[ 1210.221692] usb 2-1.2: device descriptor read/64, error -32
[ 1210.397563] usb 2-1.2: new full-speed USB device number 77 using ehci-pci
[ 1210.805301] usb 2-1.2: device not accepting address 77, error -32
[ 1210.877229] usb 2-1.2: new full-speed USB device number 78 using ehci-pci
[ 1211.284944] usb 2-1.2: device not accepting address 78, error -32
[ 1211.285030] usb 2-1-port2: unable to enumerate USB device
[ 1212.492078] usb 2-1.2: new full-speed USB device number 79 using ehci-pci
[ 1212.564026] usb 2-1.2: device descriptor read/64, error -32
[ 1212.739898] usb 2-1.2: device descriptor read/64, error -32
[ 1212.915782] usb 2-1.2: new full-speed USB device number 80 using ehci-pci
[ 1212.987734] usb 2-1.2: device descriptor read/64, error -32
[ 1213.163626] usb 2-1.2: device descriptor read/64, error -32
[ 1213.339475] usb 2-1.2: new full-speed USB device number 81 using ehci-pci
[ 1213.747185] usb 2-1.2: device not accepting address 81, error -32
[ 1213.819135] usb 2-1.2: new full-speed USB device number 82 using ehci-pci
[ 1214.226858] usb 2-1.2: device not accepting address 82, error -32
[ 1214.226995] usb 2-1-port2: unable to enumerate USB device
[ 1214.374738] usb 2-1.2: new full-speed USB device number 83 using ehci-pci
[ 1214.446687] usb 2-1.2: device descriptor read/64, error -32
[ 1214.622559] usb 2-1.2: device descriptor read/64, error -32
[ 1214.798461] usb 2-1.2: new full-speed USB device number 84 using ehci-pci
[ 1214.870386] usb 2-1.2: device descriptor read/64, error -32
[ 1215.046264] usb 2-1.2: device descriptor read/64, error -32
[ 1215.222157] usb 2-1.2: new full-speed USB device number 85 using ehci-pci
[ 1215.629852] usb 2-1.2: device not accepting address 85, error -32
[ 1215.701801] usb 2-1.2: new full-speed USB device number 86 using ehci-pci
[ 1216.109511] usb 2-1.2: device not accepting address 86, error -32
[ 1216.109645] usb 2-1-port2: unable to enumerate USB device
[ 1217.316655] usb 2-1.2: new full-speed USB device number 87 using ehci-pci
[ 1217.388617] usb 2-1.2: device descriptor read/64, error -32
[ 1217.564480] usb 2-1.2: device descriptor read/64, error -32
[ 1217.740356] usb 2-1.2: new full-speed USB device number 88 using ehci-pci
[ 1217.812304] usb 2-1.2: device descriptor read/64, error -32
[ 1217.988179] usb 2-1.2: device descriptor read/64, error -32
[ 1218.164092] usb 2-1.2: new full-speed USB device number 89 using ehci-pci
[ 1218.571766] usb 2-1.2: device not accepting address 89, error -32
[ 1218.643718] usb 2-1.2: new full-speed USB device number 90 using ehci-pci
[ 1219.051426] usb 2-1.2: device not accepting address 90, error -32
[ 1219.051544] usb 2-1-port2: unable to enumerate USB device
[ 1220.258568] usb 2-1.2: new full-speed USB device number 91 using ehci-pci
[ 1220.330520] usb 2-1.2: device descriptor read/64, error -32
[ 1220.506395] usb 2-1.2: device descriptor read/64, error -32
[ 1220.682272] usb 2-1.2: new full-speed USB device number 92 using ehci-pci
[ 1220.754221] usb 2-1.2: device descriptor read/64, error -32
[ 1220.930095] usb 2-1.2: device descriptor read/64, error -32
[ 1221.105972] usb 2-1.2: new full-speed USB device number 93 using ehci-pci
[ 1221.513681] usb 2-1.2: device not accepting address 93, error -32
[ 1221.585632] usb 2-1.2: new full-speed USB device number 94 using ehci-pci
[ 1221.993340] usb 2-1.2: device not accepting address 94, error -32
[ 1221.993467] usb 2-1-port2: unable to enumerate USB device
[ 1222.153244] usb 2-1.2: new full-speed USB device number 95 using ehci-pci
[ 1222.225182] usb 2-1.2: device descriptor read/64, error -32
[ 1222.401065] usb 2-1.2: device descriptor read/64, error -32
[ 1222.576935] usb 2-1.2: new full-speed USB device number 96 using ehci-pci
[ 1222.648877] usb 2-1.2: device descriptor read/64, error -32
[ 1222.824755] usb 2-1.2: device descriptor read/64, error -32
[ 1223.000631] usb 2-1.2: new full-speed USB device number 97 using ehci-pci
[ 1223.408341] usb 2-1.2: device not accepting address 97, error -32
[ 1223.480293] usb 2-1.2: new full-speed USB device number 98 using ehci-pci
[ 1223.888013] usb 2-1.2: device not accepting address 98, error -32
[ 1223.888210] usb 2-1-port2: unable to enumerate USB device
[ 1224.035919] usb 2-1.2: new full-speed USB device number 99 using ehci-pci
[ 1224.107857] usb 2-1.2: device descriptor read/64, error -32
[ 1224.283717] usb 2-1.2: device descriptor read/64, error -32
[ 1224.459598] usb 2-1.2: new full-speed USB device number 100 using ehci-pci
[ 1224.531569] usb 2-1.2: device descriptor read/64, error -32
[ 1224.707428] usb 2-1.2: device descriptor read/64, error -32
[ 1224.883307] usb 2-1.2: new full-speed USB device number 101 using ehci-pci
[ 1225.291011] usb 2-1.2: device not accepting address 101, error -32
[ 1225.362968] usb 2-1.2: new full-speed USB device number 102 using ehci-pci
[ 1225.770678] usb 2-1.2: device not accepting address 102, error -32
[ 1225.770845] usb 2-1-port2: unable to enumerate USB device
[ 1225.918564] usb 2-1.2: new full-speed USB device number 103 using ehci-pci
[ 1225.990521] usb 2-1.2: device descriptor read/64, error -32
[ 1226.166422] usb 2-1.2: device descriptor read/64, error -32
[ 1226.342261] usb 2-1.2: new full-speed USB device number 104 using ehci-pci
[ 1226.414213] usb 2-1.2: device descriptor read/64, error -32
[ 1226.590097] usb 2-1.2: device descriptor read/64, error -32
[ 1226.765973] usb 2-1.2: new full-speed USB device number 105 using ehci-pci
[ 1227.173686] usb 2-1.2: device not accepting address 105, error -32
[ 1227.245623] usb 2-1.2: new full-speed USB device number 106 using ehci-pci
[ 1227.653336] usb 2-1.2: device not accepting address 106, error -32
[ 1227.653476] usb 2-1-port2: unable to enumerate USB device
[ 1228.860495] usb 2-1.2: new full-speed USB device number 107 using ehci-pci
[ 1228.932428] usb 2-1.2: device descriptor read/64, error -32
[ 1229.108301] usb 2-1.2: device descriptor read/64, error -32
[ 1229.284176] usb 2-1.2: new full-speed USB device number 108 using ehci-pci
[ 1229.356411] usb 2-1.2: device descriptor read/64, error -32
[ 1258.065448] usb 1-1.2: new full-speed USB device number 3 using ehci-pci
[ 1258.161085] usb 1-1.2: New USB device found, idVendor=03f0, idProduct=a407
[ 1258.161096] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1258.161103] usb 1-1.2: Product: HP Link-5 micro dongle
[ 1258.161108] usb 1-1.2: Manufacturer: HP
[ 1260.639298] usbcore: registered new interface driver usbhid
[ 1260.639302] usbhid: USB HID core driver
[ 1260.831272] input: HP HP Link-5 micro dongle as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/0003:03F0:A407.0001/input/input27
[ 1260.831509] hid-generic 0003:03F0:A407.0001: input,hidraw0: USB HID v1.11 Keyboard [HP HP Link-5 micro dongle] on usb-0000:00:1a.0-1.2/input0
[ 1260.832833] input: HP HP Link-5 micro dongle as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.1/0003:03F0:A407.0002/input/input28
[ 1260.836545] hid-generic 0003:03F0:A407.0002: input,hiddev0,hidraw1: USB HID v1.11 Mouse [HP HP Link-5 micro dongle] on usb-0000:00:1a.0-1.2/input1
[ 2929.973387] usb 1-1.1: new full-speed USB device number 4 using ehci-pci
[ 2930.045335] usb 1-1.1: device descriptor read/64, error -32
[ 2930.221208] usb 1-1.1: device descriptor read/64, error -32
[ 2930.397092] usb 1-1.1: new full-speed USB device number 5 using ehci-pci
[ 2930.469042] usb 1-1.1: device descriptor read/64, error -32
[ 2930.644920] usb 1-1.1: device descriptor read/64, error -32
[ 2930.820792] usb 1-1.1: new full-speed USB device number 6 using ehci-pci
[ 2931.228497] usb 1-1.1: device not accepting address 6, error -32
[ 2931.300447] usb 1-1.1: new full-speed USB device number 7 using ehci-pci
[ 2931.708169] usb 1-1.1: device not accepting address 7, error -32
[ 2931.708373] usb 1-1-port1: unable to enumerate USB device
[ 5567.369375] usb 1-1.1: new full-speed USB device number 8 using ehci-pci
[ 5567.441321] usb 1-1.1: device descriptor read/64, error -32
[ 5567.617195] usb 1-1.1: device descriptor read/64, error -32
[ 5567.793070] usb 1-1.1: new full-speed USB device number 9 using ehci-pci
[ 5567.865020] usb 1-1.1: device descriptor read/64, error -32
[ 5568.040902] usb 1-1.1: device descriptor read/64, error -32
[ 5568.216771] usb 1-1.1: new full-speed USB device number 10 using ehci-pci
[ 5568.624480] usb 1-1.1: device not accepting address 10, error -32
[ 5568.696434] usb 1-1.1: new full-speed USB device number 11 using ehci-pci
[ 5569.104143] usb 1-1.1: device not accepting address 11, error -32
[ 5569.104221] usb 1-1-port1: unable to enumerate USB device
[ 5893.110604] usb 2-1.2: new low-speed USB device number 109 using ehci-pci
[ 5893.208644] usb 2-1.2: New USB device found, idVendor=046d, idProduct=c00e
[ 5893.208652] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 5893.208657] usb 2-1.2: Product: USB-PS/2 Optical Mouse
[ 5893.208662] usb 2-1.2: Manufacturer: Logitech
[ 5893.212904] input: Logitech USB-PS/2 Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/0003:046D:C00E.0003/input/input41
[ 5893.213306] hid-generic 0003:046D:C00E.0003: input,hidraw2: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb-0000:00:1d.0-1.2/input0
[ 6003.083065] usb 1-1.2: USB disconnect, device number 3
[ 6003.480444] usb 1-1.1: new full-speed USB device number 12 using ehci-pci
[ 6003.552389] usb 1-1.1: device descriptor read/64, error -32
[ 6003.728255] usb 1-1.1: device descriptor read/64, error -32
[ 6003.904132] usb 1-1.1: new full-speed USB device number 13 using ehci-pci
[ 6003.976074] usb 1-1.1: device descriptor read/64, error -32
[ 6004.151955] usb 1-1.1: device descriptor read/64, error -32
[ 6004.327832] usb 1-1.1: new full-speed USB device number 14 using ehci-pci
[ 6004.735546] usb 1-1.1: device not accepting address 14, error -32
[ 6004.807497] usb 1-1.1: new full-speed USB device number 15 using ehci-pci
[ 6005.215194] usb 1-1.1: device not accepting address 15, error -32
[ 6005.215404] usb 1-1-port1: unable to enumerate USB device

Does it help or should i try an other command option?

Sorry to ask but i'm a lost. :(