Proxmox VE

• Proxmox GPU Passthrough Black Screen: UEFI/OVMF, ROM Issues, Reset Bugs, and Proven Fixes
• Proxmox LDAP/AD Login Fails: Where the Auth Chain Breaks and How to Fix
• Proxmox Firewall Rules Don’t Apply: iptables vs nftables Conflicts Explained
• Proxmox iSCSI login failed: target reachable but no LUN — how to fix it
• Proxmox SMB/CIFS Is Slow for VM Disks: Why It’s Bad and What to Use Instead
• Proxmox got slower after upgrade: the first checks that usually reveal the cause
• Proxmox VE for beginners: the first 10 settings to fix after install (security, storage, backups)
• PCIe passthrough on Proxmox vs ESXi: GPUs, HBAs, NICs — what’s easier and what’s faster
• Proxmox LVM-thin “out of data space”: free space without destroying VMs
• Convert VMDK to QCOW2 for Proxmox: qemu-img commands, performance tips, and common errors
• Proxmox I/O wait at 100%: find the noisy VM/container and stop host freezes
• Proxmox “TASK ERROR: timeout waiting for …”: pinpoint what actually timed out
• Proxmox Corosync “link down”: why the cluster flaps and how to stabilize it
• Proxmox “migration aborted”: common reasons and the repair path
• Proxmox filesystem becomes read-only: why it happens and how to recover
• Proxmox “cannot get exclusive lock”: what’s holding the VM and how to release it
• Proxmox “Too Many Open Files”: What Limit to Raise, and for Which Service
• Proxmox pveperf Shows Nonsense: How to Benchmark Properly
• Ceph on Proxmox: when it’s worth it, when it’s a trap, and how to size it correctly