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So I haven't had an e14, but I've had two P14's in the past year. One ryzen one intel. My only gripe is getting the power usage down while running linux took

So I haven't had an e14, but I've had two P14's in the past year. One ryzen one intel. My only gripe is getting the power usage down while running linux took a few hours of fiddling. I used to have a T480 that idled around 5 watts, I could get the newer laptops down to there but I had to make sure all the various devices didn't have power saving disabled. The thunderbolt pci devices were the big culprit which is unsurprising as I drive two 27" monitors via thunderbolt. The power usage is still a little "spiky". When the laptop comes online or out of hibernation it takes a few minutes for the fan to spin down but overall it's alright. I guess personally I'd go for the newer laptop. But that's mostly because TB4 is a hard requirement for me at this point. It might take a little more fiddling with the power settings (linux or windows) to get it where you want it but lenovo is pretty good a polishing it's business laptops. As for your original worry of soldered on RAM. I don't like it either and I try to avoid it, but it doesn't weigh heavy on my mind when choosing a laptop. Edit; I don't know how to use commas I guess.

kramerger 4y ago
I am curious how you measure power usage and how to reduce it on Linux.
- mattpallissard 4y ago
  For measuring draw on the battery I have a status bar script that pulls /sys/class/power_supply/BAT?/power_now As for reducing power usage that's always a game of whack a mole every time you get a new laptop. 1. TLP is a great starting point - https://linrunner.de/tlp/index.html 2. Powertop can help pin down devices and the various settings to persist via udev rules - https://github.com/fenrus75/powertop 3. The arch wiki is always a great resource - https://wiki.archlinux.org/title/Power_management 4. And naturally you'll have to fiddle with various bios settings. It's a game of trial and error. Turn one thing on, measure, turn it off, measure. And of course some devices will go into powersaving mode, but wont come out of it so you'll blacklist those in udev powersaving rules.

kramerger 4y ago

I am curious how you measure power usage and how to reduce it on Linux.

mattpallissard 4y ago
For measuring draw on the battery I have a status bar script that pulls /sys/class/power_supply/BAT?/power_now As for reducing power usage that's always a game of whack a mole every time you get a new laptop. 1. TLP is a great starting point - https://linrunner.de/tlp/index.html 2. Powertop can help pin down devices and the various settings to persist via udev rules - https://github.com/fenrus75/powertop 3. The arch wiki is always a great resource - https://wiki.archlinux.org/title/Power_management 4. And naturally you'll have to fiddle with various bios settings. It's a game of trial and error. Turn one thing on, measure, turn it off, measure. And of course some devices will go into powersaving mode, but wont come out of it so you'll blacklist those in udev powersaving rules.