Hi tamir and Forum,
I have upgraded my system from Mint 19.0 to 19.3. The problem persists.
However, I don't think that my initial report was accurate.
1) I loaded every USB with a thumb drive. The "lsusb" output is below
2) suspended the machine and then checked "lsusb" again. All the thumb drive are mounted but the mouse is missing.
The mouse was quite dead with no light (optical mouse)
3) unplugging the mouse and putting it back into the same USB port does not fix it.
4) however the USB port is still alive -- I can put a USB in it and it mounts
5) putting the mouse into another USB will fix it it.
6) however if I suspend again I lose the mouse and the keyboard! This is what confused me before.
so the problem is not that the USB ports die, it is specific to the mouse and then the keyboard.
I think perhaps that this is not a fitpc4 problem. I see posts on the web about mouse and keyboard not recovering after
a suspend i.e.
https://askubuntu.com/questions/1142841 ... end-to-ram
I have tried a few of these remedies but without success so far.
Bye
lsusb before suspend
Bus 002 Device 004: ID ffff:5678
Bus 002 Device 003: ID 18a5:0302 Verbatim, Ltd Flash Drive
Bus 002 Device 005: ID 0781:5567 SanDisk Corp. Cruzer Blade
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 413c:2010 Dell Computer Corp. Keyboard
Bus 004 Device 002: ID 413c:1003 Dell Computer Corp. Keyboard Hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 05dc:a793 Lexar Media, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 003: ID 8087:0a2b Intel Corp.
Bus 003 Device 002: ID 0461:4d15 Primax Electronics, Ltd Dell Optical Mouse
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 003: ID 1f75:0903 Innostor Technology Corporation
Bus 006 Device 002: ID 0781:5595 SanDisk Corp.
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lsusb after suspend
Bus 002 Device 004: ID ffff:5678
Bus 002 Device 003: ID 18a5:0302 Verbatim, Ltd Flash Drive
Bus 002 Device 005: ID 0781:5567 SanDisk Corp. Cruzer Blade
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 005: ID 413c:2010 Dell Computer Corp. Keyboard
Bus 004 Device 004: ID 413c:1003 Dell Computer Corp. Keyboard Hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 05dc:a793 Lexar Media, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 003: ID 1f75:0903 Innostor Technology Corporation
Bus 006 Device 002: ID 0781:5595 SanDisk Corp.
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub