Ubuntu 22.04更新升级、UEFI启动及服务器控制面板安装异常求助

Hey there, sorry to hear you're stuck with all these frustrating issues on Ubuntu 22.04—let's break down each problem and work through fixes step by step!

1. UEFI不显示USB安装选项的问题 #

It sounds like your BIOS/UEFI settings might have shifted unexpectedly, or your Ubuntu USB installer could be corrupted from repeated use. Here are actionable fixes to try:

• Recreate your Ubuntu USB installer: Use a tool like Rufus, and make sure to select the "GPT partition scheme for UEFI" option when creating the drive. Corrupted install media is a common culprit here.
• Check BIOS/UEFI settings:
  • Restart your PC and enter BIOS (usually via F2, Del, or F10 during boot—watch for on-screen prompts).
  • Disable Secure Boot (many motherboards block non-Windows UEFI bootloaders when this is enabled).
  • Confirm the boot mode is set to UEFI Only (not Legacy BIOS or mixed mode).
  • Move your USB drive to the top of the boot order list so the system prioritizes it.
• Switch USB ports: Front panel ports can have power or connectivity issues—try a rear USB 2.0 or 3.0 port instead.

2. 系统更新升级速度极慢的问题 #

Since Windows updates work smoothly, your network is fine—this is almost always an issue with Ubuntu's software sources. Let's fix that:

• Clear stale update caches: Open a terminal and run these commands to clean up old, corrupted cache files:

  sudo apt clean
  sudo apt autoremove
  sudo apt update && sudo apt upgrade
  

• Switch to a closer, faster mirror: Default mirrors might be congested. For Ghana, try a South African mirror (geographically closer) for better speeds:
  1. Open the sources list file: sudo nano /etc/apt/sources.list
  2. Replace all instances of your current mirror (e.g., us.archive.ubuntu.com) with za.archive.ubuntu.com
  3. Save the file (Ctrl+O, then Enter) and exit (Ctrl+X), then run sudo apt update again.
• Verify DNS settings: Even if you set Google DNS, confirm it's active by running nslookup archive.ubuntu.com in terminal. If it doesn't show Google's IPs (8.8.8.8/8.8.4.4), try Cloudflare DNS (1.1.1.1) in your network settings.
• Try multi-threaded downloading: Install apt-fast (a tool that speeds up apt with multiple threads):

  sudo add-apt-repository ppa:apt-fast/stable
  sudo apt update
  sudo apt install apt-fast
  

  Use sudo apt-fast upgrade instead of apt upgrade for faster downloads.

3. 服务器控制面板（Virtualmin/ISPConfig）安装耗时过长 #

This is a direct side effect of slow update speeds—these panels download hundreds of dependencies during installation. Fixing the source/mirror issue above will drastically cut down install time. A few extra tips:

• Close bandwidth-heavy apps: Make sure no browsers, torrent clients, or other downloads run in the background while installing the panel.
• Check panel install script settings: Some panels let you specify a custom mirror. For example, Virtualmin's install script supports a --mirror flag to point to your fast local mirror.

If you try all these steps and still hit snags, share specific error messages (from updates or panel installs) and we can dig deeper!

备注：内容来源于stack exchange，提问作者Chrystman