> If not is there any way to turn off uas ?

Try kernel parameter:
  usb_storage.quirks=0bc2:331a:u  disables UAS transfer mode,
  usb_storage.quirks=0bc2:331a:   disables all quirks.

The latter might be risky as kernel developers disabled SAT ATA PASS-
THROUGH in UAS mode for some good reason.

Both reportedly work according to these comments:
https://www.smartmontools.org/ticket/971#comment:12
https://www.smartmontools.org/ticket/1092#comment:3


** Bug watch added: www.smartmontools.org/ #971
   https://www.smartmontools.org/ticket/971

** Bug watch added: www.smartmontools.org/ #1092
   https://www.smartmontools.org/ticket/1092

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https://bugs.launchpad.net/bugs/1810215

Title:
  Smart data works on 16.04 but not 18.4

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