brent Thanks, did this already and didn't resolve it unfortunately.
@minh Yes that was preinstalled but this is a USB-C dock rather than a Thunderbolt one actually.
@TraceyC Yes this isn't really a Solus issue, I just wondered if anyone else has encountered this here, this is a Dell Pro 13 Plus PB13250. This is the first time ever I deleted the Windows partition as I was unable to resize it. After a few days usage I'm having a surprising amount of other woes, the laptop cannot suspend RAM, when it wakes up from hibernate, the touchpad moves on it's own (found a potential solution to this on another forum). I've been installing Linux on computers for over 12 years and never had this many issues.