HoloISOHotfix.sh

#!/bin/bash
sudo pacman -Syyu # Update repos and packages
sudo pacman -Syu mesa-amber # Install mesa-amber as mesa causes visual artifacts
sudo pacman -Syu polkit # Installs polkit
sudo pacman -Syyu # Reupdates repos and packages just in case, also to prep for potential steamos-update
sudo steamos-update check # Checks for SteamOS updates
sudo steamos-update now # Updates SteamOS is an update is found 
sudo holoiso-grub-update # Updates holoiso grub configuration just to be safe

# The file "/root/.steam/root/config/SteamAppData.vdf" for some reason is required to exist for gamescope to properly initialise, however, it seems that this file is by default not created.
# The following section will check to see if it exists, and if it doesn't, creates it.
# Whilst in desktop modem this file is not written to, so I assume it gets written to whilst in gamemode, or whilst playing a game in or out of gamemode? 
if [ -e /root/.steam/root/config/SteamAppData.vdf ] # Checks if file exists
then
    echo "File "/root/.steam/root/config/SteamAppData.vdf" exists. Skipping file creation."
else
    echo "File "/root/.steam/root/config/SteamAppData.vdf" does not exist. Creating file."
    
    cd /
    cd root
     
    if [ -d /root/.steam ]
        then
            echo "Directory "/root/.steam" exists. Skipping directory creation."
            cd .steam
        else
            echo "Directory "/root/.steam" does not exist. Creating directory."
            sudo mkdir .steam
            cd .steam
            echo "Directory "/root/.steam" created"
    fi
    
    if [ -d /root/.steam/root ]
        then
            echo "Directory "/root/.steam/root" exists. Skipping directory creation."
            cd root
        else
            echo "Directory "/root/.steam/root" does not exist. Creating directory."
            sudo mkdir root
            cd root
            echo "Directory "/root/.steam/root" created"
    fi
    
    if [ -d /root/.steam/root/config ]
        then
            echo "Directory "/root/.steam/root/config" exists. Skipping directory creation."
            cd config
        else
            echo "Directory "/root/.steam/root/config" does not exist. Creating directory."
            sudo mkdir config
            cd config
            echo "Directory "/root/.steam/root/config" created"
    fi
    
    sudo touch SteamAppData.vdf
    echo "Created file: /root/.steam/root/config/SteamAppData.vdf."
fi

# The variable "XDG_RUNTIME_DIR" seems to not be set properly, causing incorrect system permissions for the users, and seemingly making gamescope fail to initialise.
# The following section will set the variable to the correct value.
echo "export XDG_RUNTIME_DIR=/run/user/1000" >> ~/.pam_environment # Default user ID
echo "export XDG_RUNTIME_DIR=/run/user/1000" >> ~/.bashrc
source ~/.bashrc

sudo holoiso-enable-sessions # Re-enables sessions just in case the user decides to reboot.
sudo holoiso-grub-update # Updates holoiso grub configuration once more, just to be safe

echo "The script has finished running and sessions have been enabled. Try rebooting to test if holoiso now works."

THIS SCIPT WILL NO LONGER BE UPDATED. UPDATES WILL BE FOUND HERE: https://github.com/C7YPT0N1C/HoloISO-Hotfix
Full Documentation: https://github.com/users/C7YPT0N1C/projects/4

NOTES:

- THIS HAS ONLY BEEN TESTED ON INSTALLATIONS THAT USED THE HOLOISO 4.1 ISO

- THIS SCRIPT MUST BE RUN USING SUPERUSER / SUDO SU. IT WILL NOT WORK OTHERWISE.

After a bit of tinkering, I've got it to work to a decent level. If this does not work for you, please tell me what happens! Testers are appreciated.

Instructions:

- Boot into Holoiso Desktop Mode

- At this point, Steam Desktop will boot up. You may sign in, but this will skip the SteamOS OOBE. I do recommend to sign in, but if you want / need the OOBE, don't sign in.

- Open a web browser and download the script above.

- Extract download.

- Open folder, right click empty space, and click "Open Terminal Here"

- In the terminal that appears, run:

sudo su

then

sudo bash ./HoloISO-4.1-Hotfix.sh

- When the script has finished running, reboot, as "return to game mode" seems to be hella buggy.

Notices:

- You may have to reboot a few times to fully boot up. If a kernel doesn't work, try a different one.

- I may update this script if I find a better hotfix. If I do, please redownload and re-run the script. I will code the script to ensure nothing breaks and no useless files are kept.

- Please keep in mind that when the script runs, mesa-amber will be installed to replace mesa, mesa and mesa-amber both being the 3d graphics library Holoiso / SteamOS use. You can switch to any version of mesa, and see if that works better for you.

- Please keep in mind that this script may have unintended side effects if you have more than 1 user on your system (?).