The default Thunderbolt 3 Dock (PA5281E*) Intel LAN driver does not support DMAr (DMA remapping).
When using the Thunderbolt 3 Dock along with Modern Standby models such as Portege X30-F / Tecra X40-F, X50-F or Portege X30-G, X40-G, X50-G ( Secured Core PC classified models ), due to the missing DMAr support, you may experience one of the following issues:
Applies to the following products:
Please visit our download page to obtain the Thunderbolt 3 Dock (PA5281E*) Intel LAN driver V126.96.36.199 (i210) or later, which support DMAr (DMA remapping).
More information about Thunderbolt 3 Dock:
More information about Kernel DMA Protection for Thunderbolt:
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