Issue #642 has been updated by Janez Novak. File temperature_coreboot.png added File temperature_oembios.png added
I have been using coreboot on the laptop again for a few months, but because of the fan noise and worse performance, I had to flash OEM BIOS again. Today I ran the same benchmark with both coreboot and OEM BIOS with turbo boost disabled, and the benchmark score was the same, but with coreboot, cores were around 7°C colder than the whole package, while with the OEM BIOS, package and cores were usually at the same temperature. Package temperature was the same, but with coreboot fan had to run around 1900 RPM faster to keep the same package temperature as the OEM BIOS, which probably means that with coreboot CPU or something else in the package is generating more heat while doing the same work. I have attached two screenshots that were taken in the middle of the benchmark with coreboot and OEM BIOS. ---------------------------------------- Bug #642: x201t Turbo boost not working, CPU running hot https://ticket.coreboot.org/issues/642#change-2418 * Author: Janez Novak * Status: New * Priority: Normal * Category: chipset configuration * Target version: main * Start date: 2026-05-03 * Affected versions: main * Affected hardware: Lenovo X201 Tablet * Affected OS: All ---------------------------------------- Hello, i installed Coreboot on my x201t but turbo boost isn’t working and cpu won’t go past 2.1 GHz. My processor is an i7 640LM. Something i also noticed is that the system runs hotter with coreboot than with stock bios but i don’t know what’s causing that. ---Files-------------------------------- Kernel Logs.md (80.4 KB) Coreboot Logs.md (152 KB) Powertop Screenshot.png (34.5 KB) .config (22.3 KB) Coreboot Logs New.md (87.9 KB) Kernel Logs New.md (79.4 KB) Kernel Logs Stock BIOS.md (91.9 KB) temperature_oembios.png (206 KB) temperature_coreboot.png (269 KB) -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account _______________________________________________ coreboot mailing list -- [email protected] To unsubscribe send an email to [email protected]
