u/Siffredinho

After a few threads describing issues by running the arm64-build of Steam under Asahi and lots of headaches here's a solution which worked for me.

First of all... as a reference I used the great guide from de-win: https://gist.github.com/de-wim/ba440a84f65d49955a1be15a328bd8b3#file-steam-install-linux-aarch64-sh

As a Bonus, I included a build for Proton-arm64 which makes everything a bit faster (instead of muvm->FEX->Steam you directly run Steam under muvm and FEX is included into the Proton build - I have no actual numbers but games seemed to be snappier). And of course, the arm64-Client for Steam works much (!!) better.

To make everthing work fine, it looks like it's required to have a working muvm/FEX-Steam installation. Under Gentoo you have to start steam-aarch64 command, but I'm positive that under Fedora or Arch it's not that different.

So if you have a working muvm-FEX-Steam environment (without any arm64 directories) you can jump to (2).

(1)
Remove old Steam Data.

rm -rf ~/.steam
rm -rf ~/.local/share/Steam

Initiate a fresh Steam installation. Like mentioned, under Gentoo it's steam-aarch64 but I assume when you come to this level of desparation (like me) you know the right command. Important is: login and let the UI start. Then you can close the Steam Client.

(2)
Jump to a tmp directory of choice (or simply your $HOME) and get the latest Steam-Beta for arm64.

LATEST_ZIPFILE=$(curl -s https://client-update.steamstatic.com/steam_client_publicbeta_linuxarm64 | grep -E '"file"\s+"bins_linuxarm64_linuxarm64.zip' | cut -d '"' -f4)
curl -o bins_linuxarm64_linuxarm64.zip https://client-update.steamstatic.com/${LATEST_ZIPFILE}

And simply install it...

unzip -o -qq bins_linuxarm64_linuxarm64.zip -d ~/.local/share/Steam/
chmod -R 700 ~/.local/share/Steam/steamrtarm64/

Enable the Beta.

mkdir -p ~/.local/share/Steam/package && echo publicbeta > ~/.local/share/Steam/package/beta

One symlink is needed (even when the directory doesn't exist at this moment).

ln -sf ~/.local/share/Steam/linuxarm64 ~/.steam/sdkarm64

I assume you have already installed FEX-Emu and muvm. Things which are required (if not already installed, use pacman, emerge, dnf....): gtk2, ibus, libvdpau.

Then you have to set the right symlink for /usr/lib64/libvpx.so.6. If it's the version you've installed, there's nothing to do for you. But you surely may have a newer version...

ls -l /usr/lib64/libvpx.so*.0
lrwxrwxrwx 1 root root      16 Jul 12 18:12 /usr/lib64/libvpx.so.12.0 -> libvpx.so.12.0.0
-rwxr-xr-x 1 root root 2030880 Jul 12 18:12 /usr/lib64/libvpx.so.12.0.0

So here you have to type:

ln -s /usr/lib64/libvpx.so.12 /usr/lib64/libvpx.so.6

Now you can start the new Steam Client for the first time.

muvm ~/.local/share/Steam/steamrtarm64/steam

It should run through up to the screenshot I uploaded.

Now to the "extra" thing. A Proton-arm64 build with FEX included. If you trust me, you can download my build (clang/lto-thin/4k). It's compiled for an M1 Processor so it possibly won't work with other ARM64-CPUs which aren't from Apple.

cd ~/.local/share/Steam
wget https://humppa.ch/proton_11.0-1_asahi.tar.zst
zstd --rm -d proton_11.0-1_asahi.tar.zst;tar -xvf proton_11.0-1_asahi.tar

If you don't trust me, grab the source and compile it with extra-configure-Option --target-arch=arm64
 (and 4k pagesize related CFLAGS).

https://github.com/ValveSoftware/Proton

Restart the client.

Right-click to the Game you want to try -> Properties -> Compatibility -> Check "force..." -> binarm64.

For a Test I just installed "South Park - The Stick of Truth" - it's small and it works absolutely fine.

If there's anyone who has enough Cloud-space, it would be cool if you upload the file and post the link here (actually humppa.ch is not the super-fast server).

If there are any mistakes, just report 'em. :-) So we all can find a solution to new issues (or any typos).

https://preview.redd.it/2w0xnou5g9dh1.jpg?width=1723&format=pjpg&auto=webp&s=71ec63eb6cca974a3808d7b33f7e9cb54066c7f5