I used OpenSUSE. Installed android tools and it worked.

    I installed GrapheneOS on a Pixel 3a last week, using the command line method on Linux Mint 19 (essentially the same as Ubuntu 18.04). It worked perfectly.

    @Frankdux: As soon as Grapheneos is installed on the Phone, you don't need Android-Tools on the PC.
    The PC will mount the Phone's Storage via USB and MTP.
    As an even better Solution to transfer Files between Phone and PC, I suggest Syncthing, which works via WLAN.

      Frankdux
      I have installed GOS using Brave browser and Linux Mint 20 Ulyana - base: Ubuntu 20.04 focal. It is the same like Ubuntu 20.04 LTS. You should install "android-sdk-platform-tools-common". Follow steps in README.md for Other distros to update it from github. And try to run "./install.sh". Also don't forget "sudo apt install adb". Good luck! :)

        Thank you guys, I really appreciate it. I’ll give it a go in a few days, and get back to you if I’m completely helpless.

        /Frank

          12 days later

          Just an update. I installed through a brave browser using Linux mint 20.1, and everything went flawlessly. Thank you guys, and thank you GOS-developers. You're all awesome and this OS is amazing.

          /Frank

          3 months later

          To install GrapheneOS on my Pixel 6a using Linux Mint 20 in the first place I did: sudo apt-get update, sudo apt-get install android-sdk-platform-tools-common and sudo apt install adb. After that I could just follow the original instruction [https://grapheneos.org/install/web] using Chromium.

          Actually I was looking for how to transfer files between my Pixel 6a and my Linux Mint 20 laptop when I came here. Since I'm a newbie and I found it hard to find, I like to share it here.

          First of all I followed this video [https://www.youtube.com/watch?app=desktop&v=1EKQbKHSBb8]. Second of all, you have to enable "File Transfer" under "USB Preferences" in GrapheneOS. Using the original USB-C cable also helps. After those 3 things, I was able to see the phone in the Nautilus filebrowser and able to copy files. Now you can easily copy photos to your laptop or put music on your phone.

          Frankdux

          I use Mint fairly often on my 2nd laptop and yes, it connects with my 6a easily and I transfer files no problem. Nothing special is needed, just make sure usb connected has the File Transfer toggle on.

            Toophei8 s an even better Solution to transfer Files between Phone and PC, I suggest Syncthing,

            Why is this better than the other approach? Is it faster?

                ve3jlg

                Syncthing is great. But totally different use case. It is for automatic, over Wifi, syncing with good conflict and revision control. Secured with public/private key pairs.
                USB is faster and more secure. But a manual process.