Upgrade of Kernel - 5.4.1 Seems to have broken Plasma 5

Hi There,

Since upgrading to Kernel 5.4.1 Plasma 5 appears to load, but the page is sort of black with no mouse cursor - looked for errors in the log, nothing...which is odd by itself.

Anyone else having issues with Plasma 5 & Kernel 5.4.1?

Thanks,