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I have the very same issue as given in this link- Battary draining fast.

I'm using Acer Nitro 7 which has NVIDIA GeForceGTX 1650 with 4 GB of dedicated GDDR5 Graphics card(mentioning this bcoz I think the most probable issue is bcoz of the graphic card).

I installed Ubuntu 18 last year. After installation, I noticed that my battery drains faster than usual and also overheats henceforth fans rotate fast and make noise.

Because of that, I had to remove Ubuntu and use Windows instead.

I had no similar problem in Windows. The battery works very well, it works 5-6 hours. So, I think the problem does not belong to the hardware.

Last week, I installed Ubuntu 20.04 alongside Windows as dual boot and I have the same problem as before. Ubuntu hardly gives me a backup of 1.5 hours. I have already installed tlp, powertop, and required Nvidia driver which this post suggests but still the battery backup has not increased.

Did I miss something in these solutions? Plz, help me how can I solve this problem as I'm stuck over this for 2 days.

Utkarsh Singh
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    Does the battery drain as fast when you use the power saving mode as in this answer? https://askubuntu.com/a/1243994/124466 – Archisman Panigrahi Jul 22 '21 at 18:42
  • yeah, I didn't observe any significant change after turning on the power-saving mode :( – Utkarsh Singh Jul 22 '21 at 20:08
  • Check that options nvidia "NVreg_DynamicPowerManagement=0x02" is set somewhere in /etc/modprobe.d/* (this should have happened automatically when you installed the driver). E.g. run grep NVreg_DynamicPowerManagement /etc/modprobe.d/*. For maximal power savings you could also run your laptop using just the IGD. Not being a gamer or graphics designer (I do use the card for compute work) I never quite understood why I'd want e.g. Firefox to do its graphics processing on the NVidia card. A waste of power for what, 10µs faster page rendering? I rather have 9+ hours on battery. – zwets Jul 22 '21 at 20:54
  • I can't find --options Nvidia "NVreg_DynamicPowerManagement=0x02 which u were suggesting in any files inside /etc/modprobe.d/. Can u provide a more detailed answer?! Also, what's the IGD thing?! Sorry, if these feels a bit silly questions, but I'm very new to Linux(Ubuntu) environment. – Utkarsh Singh Jul 23 '21 at 07:55

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Using Nvidia on demand driver(U can configure this from Nvidia X server settings application)

enter image description here

has improved my battery backup twice(3 hrs now), though lesser than what I used to get while using windows i.e, 5hrs.

On the other hand, I didn't observe any significant change after turning on the power-saving mode(i.e battery backup of 1.5 hrs only).

PS- I'm using Powertop too.

Update: I have found this answer as the most appropriate one, that actually improved my battery life from 3 hrs to 4.5 hrs(on a full charge). So In case, it solves your problem too, plz upvote his answer.

Though I'm satisfied with this amount of battery life, still Update If u can further help in enhancing/improving the battery life.

Utkarsh Singh
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