(In reply to chris from comment #14) > I can confirm that the iommu=pt workaround works, also iommu=soft works to > get gdm started and use the laptop. Sadly i have no idea what impact those > workarounds have when it comes to performance of the gpu/cpu or battery > lifetime ? Sadly i had a freeze during desktop usage shortly after boot using iommu=pt. The driver situation for raven ridge is really sad atm :( .