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== Aten USB warning with Supermicro [[motherboard]]<ref>https://support.aten.com/eServiceCx/Common/FAQ/view.do?id=17401</ref> == | == Aten USB warning with Supermicro [[motherboard]]<ref>https://support.aten.com/eServiceCx/Common/FAQ/view.do?id=17401</ref> <ref>https://www.linuxquestions.org/questions/linux-newbie-8/usb-port-nn-disabled-by-hub-emi-re-enabling-841593/?linkId=216030482</ref> == | ||
=== Problem, === | === Problem, === | ||
Revision as of 11:18, 6 May 2024
Aten USB warning with Supermicro motherboard[1] [2]
Problem,
Continuously kernwl warning "USB port nn disabled by hub (EMI?), re-enabling"
Reason,
Compatibility issue between ATEN and Supermicro USB 2.0 Hub
Work around
Set BIOS > CPU Configuration > SMT Control to "disable" and Global C-state Control to "Disabled"
Supermicro BIOS Setting on H11/H12 series motherboard with EPYC 7002 [3]
BIOS >> Advanced >> CPU configuration >> SVM Mode >> Enabled
BIOS >> Advanced >> PCIe/PCI/PnP Configuration >> SR-IOV Support >> Enabled
BIOS >> Advanced >> NB Configuration >> ACS Enable >> Enabled
BIOS >> Advanced >> NB Configuration >> IOMMU >> Enabled
BIOS >> Advanced >> ACPI settings >> PCI AER Support >> Enabled
Supermicro BIOS Setting on H11 series motherboard with EPYC 7001[3]
BIOS >> Advanced >> CPU configuration >> SVM Mode >> Enabled
BIOS >> Advanced >> PCIe/PCI/PnP Configuration >> SR-IOV Support >> Enabled
BIOS >> Advanced >> NB Configuration >> ACS Enable >> Enabled
BIOS >> Advanced >> NB Configuration >> IOMMU >> Enabled