Problema di alimentazione delle usb?

Da quando ho aumentato il numero degli hard disk esterni ho riscontrato uno strano malfunzionamento. Quando connetto un ulteriore disco o un lettore di card o di mp3, uno dei due o entrambi i dischi usb precedentementi montati spariscono.

Non può essere un problema di carico perchè gli hard disk hanno l’alimentazione separata, però mi trovo nella condizione di non poter aggiungere un terzo hard disk o di trasferire la musica sui dischi interni prima di metterla sull’ipod.

Non è una questione di sistema operativo perchè mi era successo anche all’epoca di Windows XP, ma allora non avevo dato peso alla cosa perchè non usavo stabilmente molte periferiche usb esterne.

Per chiudere segnalo che la scheda madre è una Asus P4PE ed il sistema operativo è Ubuntu Studio 7.04.

C’è qualcuno che possa suggerirmi come risolvere il problema? E’ sufficiente cambiare l’alimentatore?

7 thoughts on “Problema di alimentazione delle usb?

  1. Durante la prova per estrarre i dati precedenti sono rimasto sorpreso che tutto funzionasse con 2 hd + l’ipod, dopo un po’ però si è staccato un altro hd dando sempre “device removed” nel syslog.

  2. x chal61
    Questo è il /var/log/syslog
    Sep 18 23:34:39 deepblue NetworkManager: ^I[1190151279.082084] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_5ac_1209_000A2700153BBD94’).
    Sep 18 23:34:39 deepblue NetworkManager: ^I[1190151279.134408] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_5ac_1209_000A2700153BBD94_if0’).
    Sep 18 23:34:39 deepblue NetworkManager: ^I[1190151279.161641] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_5ac_1209_000A2700153BBD94_usbraw’).
    Sep 18 23:34:44 deepblue NetworkManager: ^I[1190151284.103789] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_5ac_1209_000A2700153BBD94_if0_scsi_host’).
    Sep 18 23:34:44 deepblue NetworkManager: ^I[1190151284.111525] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_5ac_1209_000A2700153BBD94_if0_scsi_host_scsi_device_lun0’).
    Sep 18 23:34:44 deepblue NetworkManager: ^I[1190151284.129162] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_5ac_1209_000A2700153BBD94_if0_scsi_host_scsi_device_lun0_scsi_generic’).
    Sep 18 23:34:44 deepblue NetworkManager: ^I[1190151284.312401] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/storage_serial_Apple_iPod_000A2700153BBD94_0_0’).
    Sep 18 23:34:44 deepblue NetworkManager: ^I[1190151284.516637] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/volume_part1_size_98574336’).
    Sep 18 23:34:44 deepblue NetworkManager: ^I[1190151284.762053] nm_hal_device_added (): New device added (hal udi is ‘/org/freedesktop/Hal/devices/volume_uuid_5B99_A10A’).
    Sep 18 23:34:45 deepblue hald: mounted /dev/sdg2 on behalf of uid 1000
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.422156] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_d49_3200_2CAHR10Q_if0_scsi_host_scsi_device_lun0_scsi_generic’).
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.429060] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/volume_uuid_84539f69_be05_4256_8e50_7eb143e3ea3b’).
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.541640] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_d49_3200_2CAHR10Q_if0_scsi_host_scsi_device_lun0’).
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.543737] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_d49_3200_2CAHR10Q_if0_scsi_host’).
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.550965] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_d49_3200_2CAHR10Q_usbraw’).
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.555829] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_d49_3200_2CAHR10Q_if0’).
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.559555] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/usb_device_d49_3200_2CAHR10Q’).
    Sep 18 23:37:34 deepblue NetworkManager: ^I[1190151454.681938] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/storage_serial_Maxtor_3200_2CAHR10Q_0_0’).
    Sep 18 23:44:10 deepblue hald: unmounted /dev/sdg2 from ‘/media/STEFY’ on behalf of uid 1000
    Sep 18 23:44:12 deepblue NetworkManager: ^I[1190151852.314176] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/volume_part1_size_98574336’).
    Sep 18 23:44:12 deepblue NetworkManager: ^I[1190151852.334328] nm_hal_device_removed (): Device removed (hal udi is ‘/org/freedesktop/Hal/devices/volume_uuid_5B99_A10A’).

  3. x chal 61
    Questo è il /var/log/messages della sessione

    Sep 18 23:32:51 deepblue dhcdbd: Started up.
    Sep 18 23:32:51 deepblue dhcdbd: message_handler: message handler not found under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.reason
    Sep 18 23:32:51 deepblue dhcdbd: message_handler: message handler not found under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.reason
    Sep 18 23:32:52 deepblue hpiod: 1.7.3 accepting connections at 2208…
    Sep 18 23:32:55 deepblue dhcdbd: message_handler: message handler not found under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.host_name
    Sep 18 23:32:55 deepblue dhcdbd: message_handler: message handler not found under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.domain_name
    Sep 18 23:32:55 deepblue dhcdbd: message_handler: message handler not found under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.nis_domain
    Sep 18 23:32:55 deepblue dhcdbd: message_handler: message handler not found under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.nis_servers
    Sep 18 23:33:04 deepblue gconfd (ford-5911): inizializzazione (versione 2.18.0.1), pid 5911, utente “ford”
    Sep 18 23:33:04 deepblue gconfd (ford-5911): L’indirizzo “xml:readonly:/etc/gconf/gconf.xml.mandatory” è stato risolta ad una sorgente di configurazione in sola lettura in posizione 0
    Sep 18 23:33:04 deepblue gconfd (ford-5911): L’indirizzo “xml:readwrite:/home/ford/.gconf” è stato risolto ad una sorgente di configurazione scrivibile in posizione 1
    Sep 18 23:33:04 deepblue gconfd (ford-5911): L’indirizzo “xml:readonly:/etc/gconf/gconf.xml.defaults” è stato risolta ad una sorgente di configurazione in sola lettura in posizione 2
    Sep 18 23:33:04 deepblue gconfd (ford-5911): L’indirizzo “xml:readonly:/var/lib/gconf/debian.defaults” è stato risolta ad una sorgente di configurazione in sola lettura in posizione 3
    Sep 18 23:33:04 deepblue gconfd (ford-5911): L’indirizzo “xml:readonly:/var/lib/gconf/defaults” è stato risolta ad una sorgente di configurazione in sola lettura in posizione 4
    Sep 18 23:33:09 deepblue gconfd (ford-5911): L’indirizzo “xml:readwrite:/home/ford/.gconf” è stato risolto ad una sorgente di configurazione scrivibile in posizione 0

  4. x motumboe
    lsusb con 3 hd esterni funzionanti:
    Bus 004 Device 004: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
    Bus 004 Device 003: ID 0d49:3200 Maxtor
    Bus 004 Device 002: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
    Bus 004 Device 001: ID 0000:0000
    Bus 003 Device 001: ID 0000:0000
    Bus 002 Device 001: ID 0000:0000
    Bus 001 Device 001: ID 0000:0000

    lsusb appena connesso l’ipod:
    Bus 004 Device 005: ID 05ac:1209 Apple Computer, Inc.
    Bus 004 Device 004: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
    Bus 004 Device 003: ID 0d49:3200 Maxtor
    Bus 004 Device 002: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
    Bus 004 Device 001: ID 0000:0000
    Bus 003 Device 001: ID 0000:0000
    Bus 002 Device 001: ID 0000:0000
    Bus 001 Device 001: ID 0000:0000

    lusb dopo un momento ulteriore (il maxtor 500G sparisce)
    Bus 004 Device 005: ID 05ac:1209 Apple Computer, Inc.
    Bus 004 Device 004: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
    Bus 004 Device 002: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
    Bus 004 Device 001: ID 0000:0000
    Bus 003 Device 001: ID 0000:0000
    Bus 002 Device 001: ID 0000:0000
    Bus 001 Device 001: ID 0000:0000

    Smonto l’ipod, smonto il maxtor da console, provo a rimontare il maxtor da console e ricevo:
    mount: il device speciale /dev/disk/by-uuid/84539f69-be05-4256-8e50-7eb143e3ea3b non esiste

    A questo punto occorre uno shutdown per rivederlo.

Leave a Reply

Your email address will not be published. Required fields are marked *