how i can see connected usb device in linux unbuntu or i have to install something else to get it working any help would be appreciated when i connect an usb device nothing happens it is a new install of linux regards saulius

"a usb device" is rather ambiguous, are you talking about a web cam, a thumb drive, a art tablet, a mouse, etc... the answers to what and why on all of those are considerably different. We need more details it may be something for a thumb drive as simple as needing to mount it or something for a winmodem of it not working regardless. Everything requires the appropriate drivers no matter what the operating system.

You can try issuing this command from a console before you plug in your usb device:
It prints recent kernel messages. If your system is seeing the device at all, output should appear telling what the system is doing with the device.

You can also issue "mount" to see all mounted volumes. Flash drives should show up here; some other devices won't.

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thanks for that but I'm using sony ericsson satio u1i in both media transfer and mass storage modes and the system do not see it I tried connect usb M2 adapter and it worked just had some issues seeing photo's made with sony erricsson k850i but hope it solved becouse I have installed ubuntu from cd now at the start it was done via windows installer package

I've done all the been advised nothing seems to work so some of the terminal but I still cannot see the phone connected to computer
saulius@saulius-laptop:~$ sudo su
[sudo] password for saulius:
root@saulius-laptop:/home/saulius# sudo tail -s 3 -f /var/log/messages
Dec 6 14:18:42 saulius-laptop kernel: [ 584.773059] sd 4:0:0:0: [sdb] Write Protect is off
Dec 6 14:18:42 saulius-laptop kernel: [ 584.799246] sdb: sdb1
Dec 6 14:18:42 saulius-laptop kernel: [ 584.803239] sd 4:0:0:0: [sdb] Attached SCSI removable disk
Dec 6 14:20:35 saulius-laptop pulseaudio[1348]: ratelimit.c: 115 events suppressed
Dec 6 14:20:47 saulius-laptop pulseaudio[1348]: ratelimit.c: 115 events suppressed
Dec 6 14:31:04 saulius-laptop pulseaudio[1348]: ratelimit.c: 110 events suppressed
Dec 6 14:32:00 saulius-laptop pulseaudio[1348]: ratelimit.c: 85 events suppressed
Dec 6 14:36:06 saulius-laptop pulseaudio[1348]: ratelimit.c: 2 events suppressed
Dec 6 14:54:04 saulius-laptop kernel: [ 2707.187505] hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.
Dec 6 16:48:31 saulius-laptop kernel: [ 9574.177302] usb 2-3: USB disconnect, address 3
Dec 6 16:51:44 saulius-laptop kernel: [ 9766.253070] usb 2-3: new high speed USB device using ehci_hcd and address 4
Dec 6 16:51:44 saulius-laptop kernel: [ 9766.386349] usb 2-3: configuration #1 chosen from 1 choice
Dec 6 16:51:49 saulius-laptop kernel: [ 9771.547203] usb 2-3: USB disconnect, address 4
Dec 6 16:51:50 saulius-laptop kernel: [ 9772.504118] usb 2-3: new high speed USB device using ehci_hcd and address 5
Dec 6 16:51:50 saulius-laptop kernel: [ 9772.637466] usb 2-3: configuration #1 chosen from 1 choice
Dec 6 16:51:50 saulius-laptop kernel: [ 9772.656580] scsi5 : SCSI emulation for USB Mass Storage devices
Dec 6 16:51:55 saulius-laptop kernel: [ 9777.657117] scsi 5:0:0:0: Direct-Access U1 1.0 PQ: 0 ANSI: 0
Dec 6 16:51:55 saulius-laptop kernel: [ 9777.657980] sd 5:0:0:0: Attached scsi generic sg2 type 0
Dec 6 16:51:55 saulius-laptop kernel: [ 9777.669529] sd 5:0:0:0: [sdb] 15523840 512-byte logical blocks: (7.94 GB/7.40 GiB)
Dec 6 16:51:55 saulius-laptop kernel: [ 9777.671027] sd 5:0:0:0: [sdb] Write Protect is off
Dec 6 16:51:55 saulius-laptop kernel: [ 9777.682671] sdb: sdb1
Dec 6 16:51:55 saulius-laptop kernel: [ 9777.697428] sd 5:0:0:0: [sdb] Attached SCSI removable disk
mount

maunt
as i still green with linux any help would greatly appreciated

and so I get this once i open new terminal window and type in "mount"
saulius@saulius-laptop:~$ mount
/dev/sda5 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/saulius/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=saulius)
/dev/sdb1 on /media/PHONE CARD type vfat (rw,nosuid,nodev,uhelper=devkit,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,flush)
saulius@saulius-laptop:~$

Thanks to everyone some how figured out now i can see the device and manage files on it all the best to you all