Francis, can you try one of the kernels in the comments at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1906770
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https://bugs.launchpad.net/bugs/1908478
Title:
USB-AC55 not work
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1908478/+attachment/514/+files/lspci-vnvn.log
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