Re: Can't access USB thumbdrives

On Sat, Jun 6, 2026 at 9:04 PM Chris Ramsden <[email protected]> wrote:
>
> On Sat, 2026-06-06 at 16:07 -0500, nwe wrote:
> >
> > On 6/6/26 2:38 PM, Chris Ramsden wrote:
> >
> > >
> > > I have just noticed that this computer has stopped recognising USB
> > > thumbdrives.
> > >
> >  In that situation my first impulse would be to open a terminal and
> > run
> >  sudo journalctl -f
> >  then plug in the offending drive and watch for errors
> > Or
> >  sudo dmesg | tail
> >  right after plugging an offending drive might catch something
> >
> >
> >
> > Next I might open gparted and investigate from that angle.
> >
> Aha!
>
> Jun 06 22:43:16 Zenbook kernel: usb 3-3.2: New USB device found,
> idVendor=03f0, idProduct=3407, bcdDevice= 1.00
> Jun 06 22:43:16 Zenbook kernel: usb 3-3.2: New USB device strings:
> Mfr=1, Product=2, SerialNumber=3
> Jun 06 22:43:16 Zenbook kernel: usb 3-3.2: Product: v135w
> Jun 06 22:43:16 Zenbook kernel: usb 3-3.2: Manufacturer: HP
> Jun 06 22:43:16 Zenbook kernel: usb 3-3.2: SerialNumber: 00000000000499
> Jun 06 22:43:16 Zenbook kernel: usb 3-3.2: Device is not authorized for
> usage
>
> But gparted can't see this drive.
>
> Also, there are many repeats of "Device is not authorized for usage"
> for stuff that does appear to be working, e.g. the ethernet port and my
> SSDs.

Have you searched for the terms Debian + USB + "Device is not
authorized for usage"?

Do you have USBGuard installed?

Jeff