[coreboot - Bug #642] x201t Turbo boost not working, CPU running hot
Janez Novak via coreboot <[email protected]> Mon, 04 May 2026 09:35:07 +0000
| Newsgroups | gmane.linux.bios |
|---|---|
| Message-ID | <[email protected]> |
Issue #642 has been updated by Janez Novak. File .config added Patrick Rudolph wrote in #note-4: > Is this with current coreboot main branch? > It says `intel_pstate: CPU model not supported` and on main there are no ACPI tables containing _CST. So C-states should not work at all. > > I've written https://review.coreboot.org/c/coreboot/+/92503 to fix that. > > It's possible that the package only supports C6 as deepest sleep state. C7 is special and only works on some mainboards. > Also C7 might only be supported with intel_pstate driver as you can only advertise 3 different C-states in ACPI, usually C1, C3 and C6. > > Since C-states are generally working it's probably not the issue why turbo doesn't work. Yes i am using the main branch. If anything needs to be tested please let me know. I also attached my .config now. ---------------------------------------- Bug #642: x201t Turbo boost not working, CPU running hot https://ticket.coreboot.org/issues/642#change-2275 * 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) -- 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]