On Tue, 7 Apr 2020, John Donnelly wrote: > Issue resolved - see below . > This issue has been resolved in 5.6.0.rc1 ( and 5.6.0.rc6 ) with commit : > > 9235cb13d7d1 iommu/vt-d: Allow devices with RMRRs to use identity domain > > When I applied this to 5.4.17 release I get the iLO USB hub properly enumerated and > the corresponding keyboard and mouse ( when iommu=pt ) Okay, congratulations! Alan Stern