[xubuntu-users] My SmartPhone is not recognized any more on my Xfce4 Desktop

[Csanyi Pal]

Hi,

After I plug in my smartphone in to USB of my laptop the Xubuntu 18.04 
system recognized it and I can read/write to its sd cards ( two of them 
- one for the Operating System and other just for storage ).

But some days I can’t use my smartphone like this. The icon does not 
appeares any more on my desktop.

lsusb does not show my phone anymore.

dmesg -w does not show any changes before or after I plug in the phone 
into any USB port of my laptop.

 From my Xubuntu 18.04 I can’t use adb to reach my smartphone any more 
whether in download, or in recovery mode.

What can I do to revert to the state when I was able to reach my 
smartphone from my Xubuntu Xfce4 Desktop here?

-- 
Best, Paul Chany