Benign Message: mtrr: type mismatch

Warning Message: mtrr: type mismatch for 86000000,800000 old: write-back new: write-combining is benign

Problem

When BIOS hands off control to the Linux OS, BIOS has assigned the conflict region a “write-back” type. However, the X Server process wants to make this type “write-combining.” The OS prints a warning message about this conflict type but does not change it to the new type.

Impacted OS: RHEL AS 4-U3; RHEL AS 4-U4; SLES9-SP3

Impacted Hardware: All server modules (X8400, X8420, X8440)

Workaround

This is a benign warning message that does not affect system functionality in any way.