Velocità USB

[clockover]

Buongiorno a tutti

Premetto che ho questo portatile
http://www.samsung.com/it/consumer/p...U3C-A07IT-spec

Ho piallato windows 8 e ho installato Fedora 20 (prima usavo 18). Non mi sono mai preoccupato per questa cosa ma per curiosità oggi sono andato a controllare le mie periferiche USB. Allora mi ci metto e digito

lsusb
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

1.1? Bo vabbè sarà qualche altra cosa

allora

cat /sys/bus/usb/devices/usb1/speed
12

12????? Ma non doveva essere una USB 3.0 ??? Stiamo scherzando? No vabbè allora.
Ora vi chiedo: è possibile che si stia utilizzando un driver non idoneo che castra la periferica USB a 12Mbs (quindi protocollo 1.1)?? Come posso scavare più a fondo nella faccenda? Grazie a tutti

[clockover]

Mi sono accorto di aver fatto una figura di M******

Ero collegato tramite SSH ad una macchina virtuale Centos sono troppo stupido.... questo è il risultato della periferica 3.0

/sys/bus/usb/devices/usb4
5000

dovrebbe essere giusto ora...

vorrei aggiungere che è mezz'ora che sto smanettando davanti alla console

[mykol]

se provo sul mio portatile mi da

[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb1/speed
480
[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb2/speed
480
[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb3/speed
12
[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb4/speed
12
[giorgio@localhost ~]$

sono 2 porte usb1 e 2 usb2 ? Come faccio ad individuarle ?

[mykol]

se provo sul mio portatile mi da

[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb1/speed
480
[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb2/speed
480
[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb3/speed
12
[giorgio@localhost ~]$ cat /sys/bus/usb/devices/usb4/speed
12
[giorgio@localhost ~]$

sono 2 porte usb1 e 2 usb2 ? Come faccio ad individuarle ?

[clockover]

Hai svariate possibilità. Te ne do un paio.

1) Inserisci qualcosa in una porta USB e dai

dmesg | tail

2) Oppure anche qui, inserendo disinserendo una periferica dai (puoi vederlo in tempo reale)

udevadm monitor --udev

[mykol]

ho provato su tutte e quattro le porte USB, ma non ci capisco nulla.


udevadm monitor --udev

UDEV - the event which udev sends out after rule processing

UDEV [1390328444.675704] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0/11:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328444.675731] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0/11:0:0:0/bsg/11:0:0:0 (bsg)
UDEV [1390328444.677254] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0/11:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328444.678575] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0/11:0:0:0/scsi_disk/11:0:0:0 (scsi_disk)
UDEV [1390328444.679335] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0/11:0:0:0/scsi_device/11:0:0:0 (scsi_device)
UDEV [1390328444.694950] remove /devices/virtual/bdi/8:17-fuseblk (bdi)
UDEV [1390328444.715617] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0/11:0:0:0/block/sdb (block)
UDEV [1390328444.716882] remove /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328444.717159] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0/11:0:0:0 (scsi)
UDEV [1390328444.717338] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/target11:0:0 (scsi)
UDEV [1390328444.717941] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11/scsi_host/host11 (scsi_host)
UDEV [1390328444.718358] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/host11 (scsi)
UDEV [1390328444.718771] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0 (usb)
UDEV [1390328444.719588] remove /devices/pci0000:00/0000:00:12.2/usb1/1-4 (usb)
UDEV [1390328446.430034] remove /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/input/input5/mouse0 (input)
UDEV [1390328446.484968] remove /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/input/input5/event5 (input)
UDEV [1390328446.525085] remove /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/0003:192F:0416.0001/hidraw/hidraw0 (hidraw)
UDEV [1390328446.525373] remove /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/0003:192F:0416.0001 (hid)
UDEV [1390328446.525655] remove /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/input/input5 (input)
UDEV [1390328446.526156] remove /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0 (usb)
UDEV [1390328446.527772] remove /devices/pci0000:00/0000:00:12.0/usb3/3-3 (usb)
UDEV [1390328457.251430] add /devices/pci0000:00/0000:00:12.2/usb1/1-3 (usb)
UDEV [1390328457.255319] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0 (usb)
UDEV [1390328457.256925] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12 (scsi)
UDEV [1390328457.257822] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/scsi_host/host12 (scsi_host)
UDEV [1390328457.773223] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0 (scsi)
UDEV [1390328457.773794] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0 (scsi)
UDEV [1390328457.775433] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/scsi_device/12:0:0:0 (scsi_device)
UDEV [1390328457.776284] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/scsi_disk/12:0:0:0 (scsi_disk)
UDEV [1390328457.776450] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/bsg/12:0:0:0 (bsg)
UDEV [1390328457.777614] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328457.779523] add /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328457.931851] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/block/sdb (block)
UDEV [1390328458.284779] add /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328458.796578] add /devices/virtual/bdi/8:17-fuseblk (bdi)
UDEV [1390328468.463650] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/bsg/12:0:0:0 (bsg)
UDEV [1390328468.463725] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328468.465257] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/scsi_device/12:0:0:0 (scsi_device)
UDEV [1390328468.465324] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328468.466167] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/scsi_disk/12:0:0:0 (scsi_disk)
UDEV [1390328468.495096] remove /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328468.495879] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/scsi_host/host12 (scsi_host)
UDEV [1390328468.495933] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0/block/sdb (block)
UDEV [1390328468.497109] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12/target12:0:0/12:0:0:0 (scsi)
UDEV [1390328468.497828] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0/host12 (scsi)
UDEV [1390328468.498196] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3:1.0 (usb)
UDEV [1390328468.499226] remove /devices/pci0000:00/0000:00:12.2/usb1/1-3 (usb)
UDEV [1390328468.514827] remove /devices/virtual/bdi/8:17-fuseblk (bdi)
UDEV [1390328468.515457] remove /host12/target12:0:0 (scsi)
UDEV [1390328472.968582] add /devices/pci0000:00/0000:00:12.0/usb3/3-3 (usb)
UDEV [1390328472.974663] add /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0 (usb)
UDEV [1390328472.976734] add /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/0003:192F:0416.0002 (hid)
UDEV [1390328472.977986] add /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/0003:192F:0416.0002/hidraw/hidraw0 (hidraw)
UDEV [1390328472.980578] add /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/input/input9 (input)
UDEV [1390328472.987368] add /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/input/input9/mouse0 (input)
UDEV [1390328472.988681] add /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/input/input9/event5 (input)
UDEV [1390328490.591327] add /devices/pci0000:00/0000:00:12.2/usb1/1-2 (usb)
UDEV [1390328490.595220] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0 (usb)
UDEV [1390328490.596283] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13 (scsi)
UDEV [1390328490.596748] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/scsi_host/host13 (scsi_host)
UDEV [1390328491.223120] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0 (scsi)
UDEV [1390328491.223702] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0 (scsi)
UDEV [1390328491.224881] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/scsi_device/13:0:0:0 (scsi_device)
UDEV [1390328491.225347] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/scsi_disk/13:0:0:0 (scsi_disk)
UDEV [1390328491.226257] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/bsg/13:0:0:0 (bsg)
UDEV [1390328491.227620] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328491.230916] add /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328491.389176] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/block/sdb (block)
UDEV [1390328491.730912] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328492.243361] add /devices/virtual/bdi/8:17-fuseblk (bdi)
UDEV [1390328502.021339] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328502.022005] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/scsi_disk/13:0:0:0 (scsi_disk)
UDEV [1390328502.022735] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328502.022758] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/bsg/13:0:0:0 (bsg)
UDEV [1390328502.023614] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/scsi_device/13:0:0:0 (scsi_device)
UDEV [1390328502.055379] remove /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328502.056330] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0/block/sdb (block)
UDEV [1390328502.057831] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/target13:0:0/13:0:0:0 (scsi)
UDEV [1390328502.059614] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13/scsi_host/host13 (scsi_host)
UDEV [1390328502.060815] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host13 (scsi)
UDEV [1390328502.061201] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0 (usb)
UDEV [1390328502.062189] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2 (usb)
UDEV [1390328502.064883] remove /devices/virtual/bdi/8:17-fuseblk (bdi)
UDEV [1390328502.065181] remove /host13/target13:0:0 (scsi)
UDEV [1390328514.861343] add /devices/pci0000:00/0000:00:12.2/usb1/1-2 (usb)
UDEV [1390328514.865354] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0 (usb)
UDEV [1390328514.865962] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14 (scsi)
UDEV [1390328514.866947] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/scsi_host/host14 (scsi_host)
UDEV [1390328515.493312] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0 (scsi)
UDEV [1390328515.493702] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0 (scsi)
UDEV [1390328515.495058] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/scsi_device/14:0:0:0 (scsi_device)
UDEV [1390328515.495389] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/bsg/14:0:0:0 (bsg)
UDEV [1390328515.495878] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/scsi_disk/14:0:0:0 (scsi_disk)
UDEV [1390328515.497379] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328515.499018] add /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328515.664314] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/block/sdb (block)
UDEV [1390328516.016130] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328516.551534] add /devices/virtual/bdi/8:17-fuseblk (bdi)
UDEV [1390328535.183179] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328535.183558] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/bsg/14:0:0:0 (bsg)
UDEV [1390328535.183857] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/scsi_disk/14:0:0:0 (scsi_disk)
UDEV [1390328535.183976] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328535.185996] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/scsi_device/14:0:0:0 (scsi_device)
UDEV [1390328535.215241] remove /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328535.215569] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0/block/sdb (block)
UDEV [1390328535.216227] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/target14:0:0/14:0:0:0 (scsi)
UDEV [1390328535.216553] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14/scsi_host/host14 (scsi_host)
UDEV [1390328535.217027] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host14 (scsi)
UDEV [1390328535.217047] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0 (usb)
UDEV [1390328535.217581] remove /devices/pci0000:00/0000:00:12.2/usb1/1-2 (usb)
UDEV [1390328535.234835] remove /host14/target14:0:0 (scsi)
UDEV [1390328535.234853] remove /devices/virtual/bdi/8:17-fuseblk (bdi)
UDEV [1390328542.471328] add /devices/pci0000:00/0000:00:12.2/usb1/1-2 (usb)
UDEV [1390328542.475461] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0 (usb)
UDEV [1390328542.477867] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15 (scsi)
UDEV [1390328542.478705] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/scsi_host/host15 (scsi_host)
UDEV [1390328543.103224] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0 (scsi)
UDEV [1390328543.103768] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0/15:0:0:0 (scsi)
UDEV [1390328543.104913] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0/15:0:0:0/scsi_device/15:0:0:0 (scsi_device)
UDEV [1390328543.105752] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0/15:0:0:0/scsi_disk/15:0:0:0 (scsi_disk)
UDEV [1390328543.106687] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0/15:0:0:0/bsg/15:0:0:0 (bsg)
UDEV [1390328543.108658] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0/15:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [1390328543.108950] add /devices/virtual/bdi/8:16 (bdi)
UDEV [1390328543.270285] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0/15:0:0:0/block/sdb (block)
UDEV [1390328543.589225] add /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/host15/target15:0:0/15:0:0:0/block/sdb/sdb1 (block)
UDEV [1390328544.123575] add /devices/virtual/bdi/8:17-fuseblk (bdi)

[sacarde]

dal mio schema della schedamadre vedo che ho 4 porte usb2.0

pero' vedo :

cat /sys/bus/usb/devices/usb1/speed
480

cat /sys/bus/usb/devices/usb2/speed
12


e il 3 e 4 non ci sono...



boh!

[mykol]

quale altro modo esiste per capire se una porta è usb1, 2, 3 ...

fare una prova copiando una quantità consistente di dati su un hd esterno penso non sia molto significativo perché bisogna vedere com'è l'interfaccia usb ...

Qualche altro modo ?

[clockover]

Allora il metodo più semplice è esaminare le ultime righe di dmesg.
Solitamente, quando si hanno svariati ingressi usb, ci si trova di fronte a un hub usb (spero di non dire cavolate).
http://en.m.wikipedia.org/wiki/USB_hub

Inviato da una supercazzola ed un Nexus 5 scappellato a sinistra.. con senso unico