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Disco esterno usb



Salve a tutti,

ho comperato un disco fisso esterno usb autoalimentato usb 2.0 e
funziona parecchio bene con sid. Il problema è che sul pc ho solo usb
1.0 , quindi per trasferire dati impiego moltissimo tempo. Vado dal mio
negoziante di fiducia e compro una scheda pci che mi da altre 4 uscite
usb 2.0 . La scheda è riconosciuta e funziona bene (l'ho provata con una
penna usb). Il problema è che quando attacco il disco fisso ottengo
questo messaggio (e ovviamente il disco non funziona): 

Sep 17 10:34:18 tower kernel: Initializing USB Mass Storage driver...
Sep 17 10:34:18 tower kernel: scsi2 : SCSI emulation for USB Mass
Storage devices
Sep 17 10:34:18 tower kernel:   Vendor: TOSHIBA   Model:
MK1214GAP         Rev: N0.1
Sep 17 10:34:18 tower kernel:   Type:  
Direct-Access                      ANSI SCSI revision: 02
Sep 17 10:34:18 tower kernel: uhci_hcd 0000:00:0b.0: USB bus 4
deregistered
Sep 17 10:34:18 tower kernel: uhci_hcd 0000:00:0b.1: remove, state 1
Sep 17 10:34:18 tower kernel: usb usb5: USB disconnect, address 1
Sep 17 10:34:18 tower kernel: usb 5-1: USB disconnect, address 2
Sep 17 10:34:18 tower kernel: sda : READ CAPACITY failed.
Sep 17 10:34:18 tower kernel: sda : status=0, message=00, host=7,
driver=00
Sep 17 10:34:18 tower kernel: sda : sense not available.
Sep 17 10:34:18 tower kernel: 
/dev/scsi/host2/bus0/target0/lun0:<7>usb-storage: queuecommand called
Sep 17 10:34:18 tower kernel: SCSI error : <2 0 0 0> return code =
0x70000
Sep 17 10:34:18 tower kernel: end_request: I/O error, dev sda, sector 0
Sep 17 10:34:18 tower kernel: SCSI error : <2 0 0 0> return code =
0x70000
Sep 17 10:34:18 tower kernel: end_request: I/O error, dev sda, sector 0
Sep 17 10:34:18 tower kernel:  unable to read partition table
Sep 17 10:34:18 tower kernel: Attached scsi disk sda at scsi2, channel
0, id 0, lun 0
Sep 17 10:34:18 tower kernel: Attached scsi generic sg2 at scsi2,
channel 0, id 0, lun 0,  type 0
Sep 17 10:34:18 tower usb.agent[3339]:      usb-storage: loaded
successfully

lsmod dice questo: 
usb_storage           105104  0
snd_pcm_oss            54312  0
snd_mixer_oss          19904  2 snd_pcm_oss
hisax                 199368  2
ipt_MASQUERADE          4744  1
ipt_limit               2560  1
ipt_state               2112  10
lp                     10920  0
parport                41544  1 lp
uhci_hcd               32784  0
snd_cmipci             34276  1
snd_pcm                97480  2 snd_pcm_oss,snd_cmipci
snd_page_alloc         11720  1 snd_pcm
snd_opl3_lib           10880  1 snd_cmipci
snd_timer              25540  2 snd_pcm,snd_opl3_lib
snd_hwdep               9476  1 snd_opl3_lib
gameport                4736  1 snd_cmipci
snd_mpu401_uart         8000  1 snd_cmipci
snd_rawmidi            25380  1 snd_mpu401_uart
snd_seq_device          8264  2 snd_opl3_lib,snd_rawmidi
usblp                  13056  0
snd                    57316  10
snd_pcm_oss,snd_mixer_oss,snd_cmipci,snd_pcm,snd_opl3_lib,snd_timer,snd_hwdep,snd_mpu401_uart,snd_rawmidi,snd_seq_device
ohci_hcd               21380  0
3c59x                  38952  0
ehci_hcd               29316  0
rtc                    12664  0

Sono su kernel 2.6.8.1 , e la cosa bella è che se io attacco l'hd
sull'usb della scheda madre questa funziona (lenta perchè e 1.0, ma
funziona).

Qualche suggerimento?!?
Grazie e ciao
InSa


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