Orion/2. Areas/Home Personal/knowledge/vizio-e3d470vx-no-signal-mode-negotiation.md
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1.4 KiB

date area hermes-owned
2026-09-16 hyprland/display true

Vizio E3D470VX "no signal" on laptop — force 1080p60 mode

Symptom: Vizio E3D470VX TV shows "no signal" when connected to the Framework laptop; link flaps ~4x then dies. Same TV works fine on other PCs (friend's Debian and Pop!_OS machines) → mode-negotiation failure on this laptop, not card/cable/TV.

Diagnosis path:

  1. Cross-test the TV on another machine — if it works there, rule out cable/TV/HDMI card.
  2. Compare with the Epson projector case: same class of problem (display advertises/needs a mode the laptop doesn't settle on). See monitor-not-detected-framework-hdmi-card-latch for the other display failure mode (card latch — kernel shows disconnected).

Fix (applied 2026-09-16): rule in ~/.config/hypr/monitors.lua (outside the hyprmoncfg wake block):

hl.monitor({ output = "desc:VIZIO", mode = "1920x1080@59.94", position = "auto", scale = 1 })

hyprctl reload clean. Next plug-in should auto-force the safe mode.

If "no signal" persists AFTER this rule: the mode-rejection theory is wrong — investigate HDCP or i915 DP-to-HDMI dongle signaling instead.

Hermes-system note: Mnemosyne scrubs resolution strings like 1920x1080 as IP addresses when storing memories — write them with spaces (e.g. 1920 x 1080) in memory content.

Related: Troubleshooting Index · hyprctl-dispatch-lua-shim-syntax