Hi, I have tried undervolting my t480 before, but ran into several issues, I wonder if that was because I was just not doing it correctly? never found a proper guide or tips for it really, anyone have any idea how to properly do it? reading other people's stuff, seems it is indeed worth it to try at least.
3 Comments
glitching@lemmy.ml · 4 pts · 286d
not much to it, undervolt CPU/GPU/cache in small increments (like, -75 mV at a time) until it starts to freeze or reboot, back off a bit, test for a day or two then set and forget. usually -150 mV is achievable and that makes a significant difference for the battery, coupled with turning turbo off for intel_pstate driver. if it doesn't work, bad luck with the silicon lottery and also them models are what 8 years old at this point, so there's also wear and tear in the form of electron migration.
a_really_crunchy_leaf@programming.dev · 3 pts · 287d
https://wiki.archlinux.org/title/Undervolting_CPU
monovergent@lemmy.ml · 1 pts · 287d
I haven't played with undervolting on Linux yet, but I do recall that there was the Plundervolt vulnerability a while back, to which OEMs responded with BIOS updates that disabled undervolting.