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chore: docs: various clarity improvements

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FAQ.md
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# FAQ
**Why is flatpak included? Should I use flatpak?**
#### Why is flatpak included? Should I use flatpak?
https://github.com/secureblue/secureblue/issues/125#issuecomment-1859610560
**My fans are really loud, is this normal?**
#### My fans are really loud, is this normal?
During rpm-ostree operations, it's normal. Outside of that:
@@ -12,29 +12,29 @@ During rpm-ostree operations, it's normal. Outside of that:
- Make sure you're using a `laptop` image if you're using a laptop.
- Make sure you're using an `asus` image if you're using asus.
**Should I use firejail?**
#### Should I use firejail?
[No](https://madaidans-insecurities.github.io/linux.html#firejail), use `bubblejail`` if there's no flatpak available for an app.
[No](https://madaidans-insecurities.github.io/linux.html#firejail), use ``bubblejail`` if there's no flatpak available for an app.
**An app I use won't start due to a malloc issue. How do I fix it?**
#### An app I use won't start due to a malloc issue. How do I fix it?
Override `LD_PRELOAD` for that app. For flatpaks, this is as simple as removing the environment variable via Flatseal.
**On secureblue half of my CPU cores are gone. Why is this?**
#### On secureblue half of my CPU cores are gone. Why is this?
`mitigations=auto,nosmt` is set on secureblue. This means that if your CPU is vulnerable to attacks that utilize [Simultaneous Multithreading](https://en.wikipedia.org/wiki/Simultaneous_multithreading), SMT will be disabled.
**Should I use a userns image or not? What's the difference?**
#### Should I use a userns image or not? What's the difference?
[USERNS](USERNS.md)
**How do I install `x`?**
#### How do I install `x`?
1. Check if it's already installed using `rpm -qa | grep x`
2. Check if there's a flatpak available at https://flathub.org
3. Consider using distrobox or nix to install it
4. Layer it using `rpm-ostree install`, as a last option
**Another security project has a feature that's missing in secureblue, can you add it?**
#### Another security project has a feature that's missing in secureblue, can you add it?
First check if the README already has an equivalent or better feature. If it doesn't, open a new github issue.
First check if the README already has an equivalent or better feature. If it doesn't, open a new github issue.