Author Topic: [solved] Ubuntu not seeing removable media  (Read 6456 times)

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Offline mikep

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[solved] Ubuntu not seeing removable media
« on: August 11, 2017, 11:08:40 pm »
I've just reinstalled Ubuntu and it no longer detects USB sticks or CDs...

Any ideas folks?

M
« Last Edit: August 16, 2017, 01:13:03 am by mikep »

Offline Mark Greaves (PCNetSpec)

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Re: Ubuntu not seeing removable media
« Reply #1 on: August 11, 2017, 11:27:20 pm »
Unplug the USB stick. wait 5 seconds, replug the USB stick, then post the output from:
Code: [Select]
dmesg | tail -n 40
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Offline mikep

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Re: Ubuntu not seeing removable media
« Reply #2 on: August 12, 2017, 12:03:53 am »
mike@mike-c2duo:~$ dmesg | tail -n 40
[ 8777.325626] Add. Sense: L-EC uncorrectable error
[ 8777.325629] sr 0:0:1:0: [sr0] CDB:
[ 8777.325630] Read(10): 28 00 00 00 00 20 00 00 02 00
[ 8777.325637] end_request: I/O error, dev sr0, sector 128
[ 8777.325640] Buffer I/O error on device sr0, logical block 16
[ 8819.097839] systemd-hostnamed[4050]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 8920.052017] usb 2-6: new high-speed USB device number 3 using ehci-pci
[ 8920.187564] usb 2-6: New USB device found, idVendor=0930, idProduct=6544
[ 8920.187568] usb 2-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8920.187570] usb 2-6: Product: TransMemory     
[ 8920.187573] usb 2-6: Manufacturer: TOSHIBA
[ 8920.187576] usb 2-6: SerialNumber: CD5331309A9BCE115E0FBFF2
[ 8920.187853] usb-storage 2-6:1.0: USB Mass Storage device detected
[ 8920.187911] scsi9 : usb-storage 2-6:1.0
[ 8921.205835] scsi 9:0:0:0: Direct-Access     TOSHIBA  TransMemory      1.00 PQ: 0 ANSI: 4
[ 8921.206133] sd 9:0:0:0: Attached scsi generic sg2 type 0
[ 8921.206700] sd 9:0:0:0: [sdb] 30297216 512-byte logical blocks: (15.5 GB/14.4 GiB)
[ 8921.207322] sd 9:0:0:0: [sdb] Write Protect is off
[ 8921.207326] sd 9:0:0:0: [sdb] Mode Sense: 45 00 00 00
[ 8921.208575] sd 9:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 8921.216963]  sdb: sdb1
[ 8921.219695] sd 9:0:0:0: [sdb] Attached SCSI removable disk
[ 9460.901880] systemd-hostnamed[4174]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[12326.258518] usb 2-6: USB disconnect, device number 3
[12376.844014] usb 2-5: new high-speed USB device number 4 using ehci-pci
[12376.979531] usb 2-5: New USB device found, idVendor=0930, idProduct=6544
[12376.979535] usb 2-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[12376.979538] usb 2-5: Product: TransMemory     
[12376.979541] usb 2-5: Manufacturer: TOSHIBA
[12376.979543] usb 2-5: SerialNumber: CD5331309A9BCE115E0FBFF2
[12376.979820] usb-storage 2-5:1.0: USB Mass Storage device detected
[12376.980451] scsi10 : usb-storage 2-5:1.0
[12378.001810] scsi 10:0:0:0: Direct-Access     TOSHIBA  TransMemory      1.00 PQ: 0 ANSI: 4
[12378.002240] sd 10:0:0:0: Attached scsi generic sg2 type 0
[12378.003034] sd 10:0:0:0: [sdb] 30297216 512-byte logical blocks: (15.5 GB/14.4 GiB)
[12378.003739] sd 10:0:0:0: [sdb] Write Protect is off
[12378.003743] sd 10:0:0:0: [sdb] Mode Sense: 45 00 00 00
[12378.005293] sd 10:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[12378.012140]  sdb: sdb1
[12378.014911] sd 10:0:0:0: [sdb] Attached SCSI removable disk
mike@mike-c2duo:~$


Something to do with nss-myhostname?

Offline Mark Greaves (PCNetSpec)

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Re: Ubuntu not seeing removable media
« Reply #3 on: August 12, 2017, 12:36:38 pm »
No.

What makes you think the USB drive isn't being recognised ? .. the system seems to be "seeing" it.

If you open your file manager, is it available in the left hand column ?
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Offline mikep

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Re: Ubuntu not seeing removable media
« Reply #4 on: August 13, 2017, 12:41:13 am »
It is today, Mark, but I swear it wasn't yesterday. I tried boot after hard reboot. Nothing.

Even more oddly, the CD/DVD drive recognised nothing yesterday, but today it sees SOME blank discs, but not others, even though they're from the same batch. I know that some discs are just coasters (although personally I've never had that happen before), but given the reinstall PLUS the USB problem, this is a hell of a coincidence..

Offline Mark Greaves (PCNetSpec)

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Re: Ubuntu not seeing removable media
« Reply #5 on: August 13, 2017, 11:11:13 am »
Dunno what to tell you .. but if it's working now, let's not mess eh ?
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Offline mikep

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Re: Ubuntu not seeing removable media
« Reply #6 on: August 16, 2017, 01:12:22 am »
Agreed.

Thanks for your time again Mark.

I'll call this solved now. Even if the 'solution' appears to be unplug, wait 24 hours, cross fingers.

 


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