Excessive battery drain on suspend

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I've recently installed Ubuntu 20.04.3 on a new Dell Vostro 3500 (11th gen processor). Ever since I did this, the battery is draining way too much while on suspend (~5-6% per hour). The output for cat /sys/power/mem_sleep is [s2idle]. Even after following the instructions to change it to s2idle [deep] from here, the output is still [s2idle]. I'm certain that there is no issue with the hardware because I was using Windows 10 for 2 months on this with no issues.

I'm not sure if this is relevant, but I copied my entire /home folder including the hidden files and folders for settings to my new laptop from my old one to preserve my settings (don't know if that could be causing this; if it is then I would appreciate help on how to fix this because I'm assuming you can't just delete setting files).

Another thing is that changing settings by editing files in my / folder has not worked for another issue (screen does not go blank when lid is closed).

Any help would be appreciated.


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