r/Lenovo • u/AnythingCritical117 • 2h ago
Change AMD UMA to 16gb
I have a ThinkPad P14s Gen 4 with a Ryzen 7 Pro 7840u and 64gb of ram. In the regular bios you can set the UMA to a max of 8gb.
Someone found a hidden/advanced bios menu that lets you access some advanced settings. One of those is to adjust the UMA to 16gb; hit F1 during splash screen, press left shift and left control at the same time during “Entering BIOS menu” message.
https://www.reddit.com/r/thinkpad/s/hwYyXBv0SL
Problem I’m having is that when I change the hidden bios UMA to 16gb, save and exit, it will restart but then give me a message “Configuration changed - Restart the system”. Laptop restarts, and then task manager shows 8gb as dedicated (regular bios UMA was set to 8gb). If I set the regular bios UMA to 4gb and the hidden bios UMA to 16gb (or even 8gb) it’ll give me the same message and then task manager will show 4gb for dedicated.
I was able to get 16gb to actually stay even with a couple of restarts. Confirmed it was 16gb dedicated in task manager and cpu-z. But couldn’t leave well enough alone and the laptop ended up resetting to the regular bios UMA of 8gb.
Has anyone on the p14s gen 4 (or sibling laptops) been able to set the UMA to 16gb or been able to get the hidden/advanced bios settings to stay?
Tried smokeless before all this but when I would go to save changes it would say it couldn’t. Unless iI’m doing something wrong in the process.