You can use localectl to change the locale on Fedora. Here's what you need to do:

• See if you have Japanese locale installed. Something like ja_JP.UTF-8 should be in the output of localectl list-locales.
• If it's not, you should install it using the following command: sudo dnf install langpacks-ja (I'm not 100 % sure about this and I don't have a Fedora system to test it on.)
• Set the locale: sudo localectl set-locale LANG=ja_JP.UTF-8
• Reboot your system. Everything should be in Japanese now.

This will (probably) change everything to Japanese – texts in menus, error messages in the terminal, and also the font rendering. This answer on Stack Overflow suggests to do something with your fonts.conf. This way your UI would be in English (or your preferred language) and kanji would render as the Japanese variants.

So I would find something I wanted to read and then had to ask friends at other schools to get it for me.

I still have to do this sometimes. A few times I even scanned a whole article from a physical journal for a friend, because it was faster and more hassle-free than the interlibrary loan.

May I ask what you are studying? And at what University?

I'm studying linguistics at MUNI in Brno.

A. I don't know much about CJK fonts. I'm just spitballing. I am also half asleep.

B. It depends where the font is displayed. As you probably know, different Japanese, Korean and Chinese characters, which share history and look similar, share one unicode codepoint, see this Wikipedia article. Which specific glyph is shown is decided by some variable that specifies in what language the text is written:

• If the text is somewhere in the GUI (the title bar, the panel, some menu), it is probably decided by your default language and locale. This can be changed somewhere in settings. Changing this would also probably change everything to Japanese.
• If the text is somewhere on the web, this is decided by the lang parameter of the website. You can't change this easily.

I am still in school, so I have access to many journals through it. The journals I can’t get access to through school, I look at via Sci-Hub. Fortunately, most journals in my field (in my country) recently switched to an open-access format, so I’ll have to use Sci-Hub only for foreign journals.

I’m responding to both your comments here.

Did you undervolt your SD? Is it the steam version of Spiderman? Did you install it on your SD card or main memory?

The Deck’s basically new, I haven’t done anything to it (yet): No undervolting, no SD card, no non-steam games (except Minecraft).

Uninstall the game. Restart your deck. Install it again.

I’ve tried this already, but it did not work. I’ll try it again, but it’ll take a while, because my internet is really slow.

I’d open a support ticket over it. Since it works for everyone else really well it has to be an issue with your deck, specifically.

Sounds like it’s my a fault of my particular unit. 🫠 As I said, I’ll try to reinstall the game again and if that doesn’t work, I’ll open a ticket. Thanks for the suggestion.

I haven’t played many games on my Deck yet, but all of them—except the two I mentioned—worked very well. Even Baldur’s Gate 3 runs fine and it is a very demanding game. I wonder why just the games from Sony are problematic. The worst thing about this is that they load, seem to run fine for a few seconds, then freeze and crash.

Maybe I’ll bite the bullet and not worry about it now and later I’ll buy Steam Deck 2 sooner rather than later.

I tried a bunch of versions of Proton, verified the game files, redownloaded the game, installed a previous version of the game. Sadly nothing worked.

What made you uninstall American Truck Sim? I played a bit of Euro Truck Sim on my computer and I was satisfied; it's good for what it is.

I don't have anything special installed, I didn't undervolt anything. My Deck is an officially refurbished unit, so the borderline passable hardware is unfortunately likely. :(

According to other people, Horizon worked but a recent patch broke it. Spiderman (the first one) launches, freezes after a few seconds, and then the Deck restarts. 🤷‍♂️

The game that surprised me the most was Murder by Numbers. It's a very nice hybrid of a visual novel and a puzzle game. When I had more time I played the story mode, and when I didn't I played the challenges.

My biggest disappointments were games from Sony — Horizon and Spiderman. Both of them are verified, but both of them crash at start-up.

It's not Czech. I'd say it's Croatian.

If you don't need push to talk, I'd suggest using the browser version instead of the app.