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Re: [LUG] USB stick does not display

 
On 26/03/2019 18:34, mr meowski wrote:



What's the last 20 lines or so of dmesg after plugging in a USB drive?
The output of 'dmesg | tail -n 20' would be useful and there will be
obvious differences between the outputs of a successfully automounted
USB drive and an unsuccessful one.

Have you upgraded your operating system kernel recently? It could easily
be a bug in a newer kernel/subsystem shipped as part of MX Linux or
whatever you're using these days. It'd be best to concentrate on one
thing at a time but rebooting to an older kernel might help. I don't
suppose you're in a position to know if you've recently had a software
upgrade to anything like your USB libraries, systemd, udev, etc.

It's vanishingly unlikely that multiple USB drives have just stopped
working simultaneously by the way, it's going to be something to do with
your software.

Cheers


Here are those 20 lines, from my desk top computer.

[  647.299727] usb 3-1.1: Product: JumpDrive
[  647.299733] usb 3-1.1: Manufacturer: Lexar
[  647.299738] usb 3-1.1: SerialNumber: AA4PJGW8YPFOYKPE
[ 647.300056] usb 3-1.1: ep 0x81 - rounding interval to 128 microframes, ep desc says 255 microframes [ 647.300070] usb 3-1.1: ep 0x2 - rounding interval to 128 microframes, ep desc says 255 microframes 
[  647.300653] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[  647.301258] scsi host7: usb-storage 3-1.1:1.0
[ 647.375174] [UFW BLOCK] IN=enp0s31f6 OUT= MAC= SRC=fe80:0000:0000:0000:6404:a266:62e0:c859 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=502522 PROTO=UDP SPT=8612 DPT=8612 LEN=24 [ 647.375186] [UFW BLOCK] IN=enp0s31f6 OUT= MAC= SRC=fe80:0000:0000:0000:6404:a266:62e0:c859 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=563916 PROTO=UDP SPT=8612 DPT=8610 LEN=24 [ 647.385402] [UFW BLOCK] IN=enp0s31f6 OUT= MAC= SRC=fe80:0000:0000:0000:6404:a266:62e0:c859 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=502522 PROTO=UDP SPT=8612 DPT=8612 LEN=24 [ 647.385443] [UFW BLOCK] IN=enp0s31f6 OUT= MAC= SRC=fe80:0000:0000:0000:6404:a266:62e0:c859 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=563916 PROTO=UDP SPT=8612 DPT=8610 LEN=24 [ 648.840899] scsi 7:0:0:0: Direct-Access Lexar JumpDrive 1100 PQ: 0 ANSI: 4 
[  648.841745] sd 7:0:0:0: Attached scsi generic sg2 type 0
[ 648.842898] sd 7:0:0:0: [sdb] 7716864 512-byte logical blocks: (3.95 GB/3.68 GiB) 
[  648.843561] sd 7:0:0:0: [sdb] Write Protect is off
[  648.843569] sd 7:0:0:0: [sdb] Mode Sense: 43 00 00 00
[  648.844304] sd 7:0:0:0: [sdb] No Caching mode page found
[  648.844315] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[  648.848292]  sdb:
[  648.850810] sd 7:0:0:0: [sdb] Attached SCSI removable disk


I have not upgraded the kernels at all.
What puzzles me is that I am having the same problem on both my desk top computer and my laptop. The desktop is running Linux Lite with kernel 4.4.0-138-generic.
The laptop is running MX Linux with kernel 4.15.0-1-amd64. Yet they both fail to display anything from any of my sticks, except just the one. This one works on both. They both work fine with the external HD. 

Neil

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