Hey thanks a lot for the help! I am running on 1.6.0 BIOS. I am not sure how to check Thunderbolt firmware version separately, but I have already updated to the latest "updates" from software center when I ran into the bug. Also just now I followed https://itsfoss.com/update-firmware- ubuntu/ again and got "No upgrades for XPS 13 9380 System Firmware, current is 0.1.6.0: 0.1.6.0=same, 0.1.5.0=older, 0.1.4.0=older, 0.1.3.2=older, 0.1.2.1=older" from "sudo fwupdmgr update" at the last step in the article. Thanks again for the help.
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