# 🔧 General Troubleshooting

Practical fixes for common Linux, networking, and application problems.

## 🖥️ GPU & AI
- [Qwen2.5-14B OOM on RTX 3080 Ti (12GB)](gpu-display/qwen-14b-oom-3080ti.md)

## 🌐 Networking & Web
- [Apache Outage: Fail2ban Self-Ban + Missing iptables Rules](networking/fail2ban-self-ban-apache-outage.md)
- [Mail Client Stops Receiving: Fail2ban IMAP Self-Ban](networking/fail2ban-imap-self-ban-mail-client.md)
- [firewalld: Mail Ports Wiped After Reload](networking/firewalld-mail-ports-reset.md)
- [Tailscale SSH: Unexpected Re-Authentication Prompt](networking/tailscale-ssh-reauth-prompt.md)
- [ISP SNI Filtering & Caddy](isp-sni-filtering-caddy.md)
- [yt-dlp YouTube JS Challenge Fix](yt-dlp-fedora-js-challenge.md)

## 📦 Docker & Systems
- [Docker & Caddy Recovery After Reboot (Fedora + SELinux)](docker-caddy-selinux-post-reboot-recovery.md)
- [Gitea Actions Runner: Boot Race Condition Fix](gitea-runner-boot-race-network-target.md)
- [MajorWiki Setup & Publishing Pipeline](majwiki-setup-and-pipeline.md)

## 🔒 SELinux
- [SELinux: Fixing Dovecot Mail Spool Context (/var/vmail)](selinux-dovecot-vmail-context.md)

## 💾 Storage
- [mdadm RAID Recovery After USB Hub Disconnect](storage/mdadm-usb-hub-disconnect-recovery.md)

## 📝 Application Specific
- [Obsidian Vault Recovery — Loading Cache Hang](obsidian-cache-hang-recovery.md)
- [Gemini CLI Manual Update](gemini-cli-manual-update.md)

## 🤖 AI / Local LLM
- [Ollama Drops Off Tailscale When Mac Sleeps](ollama-macos-sleep-tailscale-disconnect.md)
- [Windows OpenSSH Server (sshd) Stops After Reboot](networking/windows-sshd-stops-after-reboot.md)