Debian Bash install script hangs on updating package list for debian >=13

[Mike_Wise]

OS Name/Version: Debian 13 (Trixie) — running inside a Proxmox VE 9.0.10 VM

Product Name/Version: AMP Installer (getamp.sh) — current version as of October 2025

Problem Description: When running the official AMP installation script on my Debian 13 VM, the process hangs indefinitely at

Updating packages list for Debian >= 13...

The system stays frozen there for several minutes (10 + min) without any error or timeout.
Network connectivity and DNS resolution are working (verified with ping deb.debian.org and curl ``https://getamp.sh).

Steps to reproduce:

• 1. Created a fresh Debian 13 VM in Proxmox VE 9.0.10 using the netinst ISO.

  2. Logged in as root and updated packages:

     apt update && apt upgrade -y
     
     

  3. Ran the official AMP install command:

     bash <(curl -fsSL getamp.sh)
     
     

  4. The installer printed:

     Please wait while GetAMP examines your system and network configuration...
     - Checking installed packages...
     - Checking environment...
     - Checking network configuration...
     - Updating packages list for Debian >= 13...
     
     

     and then stopped responding.

Actions taken to resolve so far:

Verified internet connectivity (ping deb.debian.org → success).

• Confirmed DNS and HTTPS work (curl -I https://getamp.sh → HTTP 302 redirect).

• Checked for apt locks (dpkg --configure -a, apt-get -f install).

• Removed cdrom entries from /etc/apt/sources.list.

• Manually ran

  apt-get -o Acquire::ForceIPv4=true update
  
  

  which completes successfully.

• Tried re-running the installer with

  bash getamp.sh --skip-update
  
  

  to bypass apt update.

Despite this, the standard installer still hangs at the “Updating packages list” stage.

Expected Result:
Installer should complete the package update phase and continue to download and configure AMP.

Actual Result:
Installer stalls indefinitely with no further output.

Additional Information:

• Proxmox VM specs: 2 vCPUs (Core i3-7th Gen), 5 GB RAM

• Playit tunnel and Samba services already configured and working

• UFW active with ports 6712/tcp (SSH) and 8080/tcp (AMP planned) open

  EDIT: the script continues but after a very long time of leaving it running