Ubuntu Driver Documentation

Known Issues

The following table describes known issues in this release and possible workarounds.

Internal Ref.

Description

1751408 

Description: Bandwidth degradations due to Intel's Page Table Isolation (PTI) CPU security fix. 

Workaround:

  • Disable PTI in run time by writing 0 to /sys/kernel/debug/x86/pti_enabled. 

  • Add "nopti" or "pti=off" to grub.conf. 


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