Intel Bartlett Lake P-core processors were incorrectly reporting a maximum frequency of up to 7.3 GHz in the Linux P-State driver. The bug caused the reported frequency to be significantly higher than the actual turbo boost speed.
QNAP engineer patches Linux P-State driver
The actual turbo boost frequency for these processors is 5.7 GHz. The error was discovered when the driver displayed a maximum frequency of 7.0/7.3 GHz in the cpuinfo_max_freq field.
A QNAP engineer fixed the issue with a six-line patch. The patch corrected the frequency reporting to match the real hardware capabilities.
Intel has not commented on the bug or the fix. The patch is now available in the Linux kernel source tree.
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