36 ms·

I've just unplugged my x220 and it is telling me it has 4:36 battery remaining. I only have firefox open and not doing anything else, so that 4:36 is probably q

by weavie 8y ago

I've just unplugged my x220 and it is telling me it has 4:36 battery remaining. I only have firefox open and not doing anything else, so that 4:36 is probably quite a significant overhead. It will drop as soon as I do something.. Yup, just fired up emacs and now it is saying 3:44 remaining. Would you mind sharing what setup you have that lets you get such long battery life?

mbrumlow 8y ago
Currently in charge of th baby. But get power top installed. Make sure in the 4th screen in power top and make sure all settings are to "good". I made a systemd unit to do this for me know boot. I also installed tlp and have it set it's settings. Some of those cross over into what powertop does. I set some things on the i915 driver but that will have to wait until baby watch is over.
- weavie 8y ago
  I have just installed powertop and updated the settings. It doesn't seem to have made any difference... but that's probably because I don't know what I am doing. I'll read up on it further. Thanks for the tip.
  - mbrumlow 8y ago
    What battery do you have? The thin one?
    - weavie 8y ago
      Not 100% sure, I'll have to look when I get home this evening. I think it may not be the thin one as it is thicker than the rest of the case, but don't totally know off hand what I should be looking at to determine it..
  - bashwizard 8y ago
    powertop --auto-tune Does it for me.
demetris 8y ago
I don’t think it is possible to get the consumption of T450s on X220. The T450s generation (and the generation before it) use ULV processors (ultra low voltage). The processors used in the T450s generation have a TLP of 15W. The processors used in the X220 generation have a TLP of 35W. On the flip side, the processors in the X220 generation (and in the next generation) are powerful, which is a good thing if you need the power and if you have the laptop plugged most of the time.
- mbrumlow 8y ago
  The x220 gets about 80% my T450s, it also seems to compile emacs a few seconds faster... Later today I will try and post some screen shots of power consumption. The x220 for sure can last an entire day on battery.

by weavie 8y ago

mbrumlow 8y ago

Currently in charge of th baby. But get power top installed. Make sure in the 4th screen in power top and make sure all settings are to "good". I made a systemd unit to do this for me know boot. I also installed tlp and have it set it's settings. Some of those cross over into what powertop does. I set some things on the i915 driver but that will have to wait until baby watch is over.

weavie 8y ago
I have just installed powertop and updated the settings. It doesn't seem to have made any difference... but that's probably because I don't know what I am doing. I'll read up on it further. Thanks for the tip.
- mbrumlow 8y ago
  What battery do you have? The thin one?
  - weavie 8y ago
    Not 100% sure, I'll have to look when I get home this evening. I think it may not be the thin one as it is thicker than the rest of the case, but don't totally know off hand what I should be looking at to determine it..
- bashwizard 8y ago
  powertop --auto-tune Does it for me.

demetris 8y ago

I don’t think it is possible to get the consumption of T450s on X220. The T450s generation (and the generation before it) use ULV processors (ultra low voltage). The processors used in the T450s generation have a TLP of 15W. The processors used in the X220 generation have a TLP of 35W. On the flip side, the processors in the X220 generation (and in the next generation) are powerful, which is a good thing if you need the power and if you have the laptop plugged most of the time.

mbrumlow 8y ago
The x220 gets about 80% my T450s, it also seems to compile emacs a few seconds faster... Later today I will try and post some screen shots of power consumption. The x220 for sure can last an entire day on battery.