Split-Browser Bookmarks, Logins & Browsers

I’m trying to get the split browser to work for Mullvad, but the disposable browser never appears (like described in Split-browser DisposableVM shuts down immediately after start). I have the same issues trying to setup a split-browser with Firefox. I’m hoping someone here can check my work and see an error that isn’t obvious to me. I’m running Qubes 4.2.3 on a Nitropad-nv41 with 64 Gb RAM. Thanks in advance.

  1. Starting with a clean, updated debian 12 install, I created deb12-clone1 and deb12-clone2 templates.
  2. For deb12-clone1 (template for persistent AppVM): “sudo apt install qubes-repo-contrib” and then “sudo apt install qubes-split-browser”
  3. For deb12-clone2 (template for disposable template): “sudo apt install qubes-repo-contrib” and then “sudo apt install qubes-split-browser-disp”
  4. Create disposable template DVM-Surf that is based on deb12-clone2.
  5. Create persistent AppVM named Surfer that is based on deb12-clone1. Net qube = none. Default disposable = DVM-Surf.
  6. Install Mullvad browser on deb12-clone2 as described on the Mullvad Qubes installation page: Install Mullvad browser on Qubes OS
  7. Repeat previous step on disposable template DVM-Surf to get Mullvad installed.
  8. In deb12-clone2: “sudo mkdir -p /usr/local/etc/split-browser-disp” and then “sudo ln -s /etc/split-browser-disp/23-mullvad-browser.bash.EXAMPLE /usr/local/etc/split-browser-disp/23-mullvad-browser.bash”
  9. Close all qubes and templates.
  10. From persistent AppVM Surfer terminal, “split-browser” command generates this error: “disp: /etc/qubes-rpc/split-browser-disp: line 20: cd: /home/user/.tb/tor-browser/Browser: No such file or directory” (this is the same error I got when I was trying to set up split browser with Firefox).

Any ideas? I saw the article about deleting the “–detach” from the .desktop files (DispVM(mullvad-browser) Debian-12-minimal ), but it doesn’t seem that this would prevent the disposable from opening. Thanks again.