Bug report - Describe the bug

[V3XAM]

I am a beta tester and a paid Pro/GUI user. I paid 22.50 PLN for the graphical environment and I am testing Ubuntu XFCE on Android using UserLAnd.

The main issue is that the VNC/GUI session becomes unstable during longer terminal operations. The bug occurs after entering a VNC/GUI session.

During commands such as:

sudo apt-get install
sudo dpkg --configure -a
sudo apt-get -f install

the graphical session can disconnect and show errors such as:

Connection refused
ECONNREFUSED
127.0.0.1:5951

In many cases, the Linux process seems to continue in the background, and the installation may even finish successfully. However, the user gets kicked out of the GUI/VNC session. For a beginner, this looks like the whole Linux environment crashed, even if only the VNC layer failed.

Expected behavior: UserLAnd should either keep the VNC connection stable during longer terminal operations or provide a clear recovery option, such as auto-reconnect, reconnect attempt, or a “Restart VNC session” button.

I also noticed browser-related problems in the GUI environment:

• Chromium on Ubuntu tries to use Snap.
• Snap does not work properly in UserLAnd/proot.
• NetSurf opens, but it does not support modern websites well because of limited JavaScript support.
• Epiphany/WebKit may fail with sandbox/dbus/bwrap-related errors.

It would be very helpful to have an official recommendation for which browser is actually supported in Ubuntu XFCE under UserLAnd.

Steps to reproduce the behavior:

1. Install or open UserLAnd.

2. Select Ubuntu with XFCE / graphical environment.

3. Start the VNC/GUI session.

4. Open the terminal inside Ubuntu XFCE.

5. Run longer package-management commands, for example:

sudo apt-get update
sudo apt-get install -y --no-install-recommends ca-certificates curl wget nano tmux git python3 python3-pip python3-venv

6. Wait during package installation/configuration.

7. The VNC/GUI session may disconnect and show a connection error such as "ECONNREFUSED" or "127.0.0.1:5951".

8. After returning to UserLAnd, the Linux session may still exist, but the GUI connection is broken or needs to be restarted.

Browser-related reproduction:

1. Start Ubuntu XFCE in UserLAnd.

2. Try to run Chromium.

3. Chromium requires Snap.

4. Snap cannot communicate with "snapd" in UserLAnd/proot.

5. Try NetSurf.

6. NetSurf opens, but modern Google/Google Skills pages ask for JavaScript support.

7. Try Epiphany.

8. Epiphany may fail with sandbox/dbus/bwrap-related errors.

Screenshots

I can provide screenshots showing:

• VNC connection failure / "ECONNREFUSED".
• "127.0.0.1:5951" connection error.
• Chromium requiring Snap.
• NetSurf showing JavaScript limitations.
• Epiphany/WebKit sandbox/dbus/bwrap errors.
• Terminal output during package installation.

Device Information

Device: Samsung Galaxy A57 5G.
Android Version: Android 16.
UserLAnd Version: 26.05.22.
Whether the device is rooted: No.
Whether the device is running LineageOS: No.

Please add any other context you think might help us resolve your issue.

I am using UserLAnd as a mobile Linux/developer environment. The terminal side works quite well. I was able to use tools such as:

curl
wget
nano
tmux
git
python3
python3-pip
python3-venv

The biggest problem is not the terminal itself, but GUI/VNC stability and browser compatibility.

Suggestions that may help improve the app:

1. Add VNC auto-reconnect.
2. Add a visible “Restart VNC session” button.
3. Show clearer error messages explaining whether only VNC failed or whether the Linux session actually stopped.
4. Add a first-run checklist for Android battery optimization:
   • set UserLAnd battery mode to unrestricted,
   • add UserLAnd to “never sleeping apps”,
   • lock UserLAnd in recent apps / “Keep open”,
   • recommend using "tmux" for long-running commands.
5. Add a “Developer setup” mode that installs a minimal toolkit without a full system upgrade:

sudo apt-get update
sudo apt-get install -y --no-install-recommends ca-certificates curl wget nano tmux git python3 python3-pip python3-venv

6. Add an official list of supported browsers per distribution.
7. Add a note that Chromium on Ubuntu may require Snap, which may not work in UserLAnd/proot.
8. Add basic diagnostics showing:
   • whether the filesystem is running,
   • whether VNC is running,
   • active VNC port,
   • last VNC error,
   • quick actions: reconnect / restart VNC / stop session.

UserLAnd has strong potential as a mobile Linux environment. My main request as a paid Pro/GUI user is better VNC recovery, clearer diagnostics, and official guidance about browser support.