Did a search for ubuntu "integrity: problem loading x.509 certificate" and the first result indicates out of date bios certificates needed for secure boot on older laptops. Disabling secure boot seems to be the suggested fix.
Obligatory I play exclusively on linux.
In the absence of a gamersnexus video or phoronix article, I'm going to take this with a large grain of salt. Especially when a video like this one is showing much higher performance in windows. The different cpu shouldn't account for much of a difference when playing at higher resolutions and the benchmarks shows the game being gpu limited.
There are too many variables that go into battery usage to get any meaningful insight. Different apps, cpus, screen brightness/refresh rates, active radios, etc... It's an endless list. Best you can do is compare with someone you know with the same model who has similar usage patterns. Good luck.
If you're going to store something on someone else's computer (Google cloud), they have every right to control what is and is not allowed on their systems. Don't like it? Use encryption, selfhost, etc...
I know these guys are too busy to do it but I would gladly pay a monthly fee for a podcast with Steve (GN), Steve (HUB), Wendell (L1) and Gordon (PCWorld).
You'll want a setup that has providers with different backbones. Found the map from the site that shall not be named. If you download alot, ideally you'll want your main to be fast and unlimited with a few block accounts from other backbones.
It looks like that instance isn't using the most up-to-date version since the "press go" issue has been fixed. Try to keep in mind that the initial commit was on June 24 and it's still very early in the development stage. If you look at the commits, you can see the developer has been very active.
Wouldn't getting something like a Kobo and syncing with Calibre be a much easier/cheaper option?