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corna / me_cleaner

Tool for partial deblobbing of Intel ME/TXE firmware images
GNU General Public License v3.0
4.42k stars 275 forks source link

ThinkPad W520 issue #363

Open zamaudio opened 2 years ago

zamaudio commented 2 years ago

Hi, I am having a strange hanging issue on Lenovo ThinkPad W520.

The factory bios seems to work fine untouched. When I run coreboot but don't touch the ME, it also works fine. When I run coreboot, don't touch the ME but set the AltMeDisable bit it works fine. When I run coreboot with a cleaned ME, it hangs randomly after a few minutes of use.

I can work around the issue with a linux kernel command line: intel_idle.max_cstate=0 processor.max_cstate=1 That seems to prevent the hangs.

Is anyone else experiencing this? If so did anyone find a fix?

nicorikken commented 2 years ago

Running a ThinkPad W520 with Coreboot and cleaned ME myself and in general it works flawlessly. I do however have one failing USB-port and wifi bandwidth is very limited when I use an Atheros card instead of the Intel one that was originally in the laptop. I assume these are hardware flaws, which are hard to confirm as I never fully tested the laptop when it was still running the original BIOS and Windows 10. So your issue could be valid, but it is not an issue on my W520 machine.