LG OLED C4 HDMI Input Icon Keeps Resetting: Name and PC Mode Fix

Quick Answer

Rename a C4 input through Inputs/Home Hub → Options → Edit Inputs, LG's documented path. If a custom PC/game/console icon later returns to generic HDMI or another detected device, do not assume the icon database alone failed. webOS can identify a newly awakened HDMI device, SIMPLINK/HDMI-CEC can advertise device type/name, receivers can expose a different active source, and unplugging or moving equipment can create a new detection record.

Test reversibly: edit one direct-connected source, photograph the name/icon, power-cycle normally, then test with SIMPLINK on and off. Preserve PC mode when needed for desktop chroma/text, because an input's PC classification can alter available picture processing—not merely its artwork. A cosmetic console/game icon may enable a different control set. Firmware timing is useful evidence but not proof; do not downgrade or use service menus to lock the icon.

Symptoms: Cosmetic Reset or Mode Change?

Name/icon resets but picture controls are identical: likely Home Hub metadata/detection issue.

PC label disappears and text becomes softer or controls change: input classification changed.

Receiver name replaces console name: AVR/CEC reports the currently routed device.

Reset occurs only after unplugging/moving ports: webOS may create another input record.

Every input resets after update/factory reset: settings migration/reset is plausible.

Input also shows No Signal or powers devices unexpectedly: diagnose HDMI/CEC, not icon alone.

Owners report PC labels reverting to HDMI and C4 device icons affecting clarity-control availability. These reports demonstrate that labels may carry behavior, but do not establish one firmware-wide defect.

Causes and Reversible Diagnostic Tree

Branch 1: Was the correct physical input edited?

Open Home Hub with the source connected and active. Select Options/Edit Inputs, verify HDMI port number, then assign name/icon and save. Photograph the Home Hub tile and active input banner. Avoid editing a stale/disconnected tile with a similar name.

Power off normally, wait, restart and inspect before switching other devices. If it persists direct but resets after AVR switching, topology/device detection is the variable.

Branch 2: Is automatic device detection overwriting metadata?

Connect only one source directly. Remove switch/AVR/capture device for baseline. Some devices change their reported identity between boot, standby and apps; webOS may update the tile. Test TV-first versus source-first power order and record which event triggers reset.

Do not repeatedly hot-plug. Power down before changing ports/cables. If a different physical port retains the label, document original port and firmware for LG.

Branch 3: Is SIMPLINK/CEC supplying the name?

LG documents SIMPLINK as HDMI-CEC device control. Turn it off temporarily in HDMI Settings, use separate remotes, edit the icon again and repeat several startups. If stable, re-enable CEC on one device at a time.

CEC off can remove auto power/input conveniences and may affect ARC/eARC topology, so this is a test, not universal cure. A receiver may present itself while hiding the downstream console; name the TV input for the receiver and manage console labels in the receiver when appropriate.

Branch 4: Does PC mode matter to picture quality?

Use a 4:4:4 chroma/text pattern at native 3840×2160. Compare PC classification with generic/game icon while holding GPU range, resolution and scaling constant. PC mode commonly prioritizes clean chroma/text and can restrict processing such as Super Resolution. A game/console classification may expose other controls.

Choose based on signal need, not preferred artwork. For desktop text, preserve PC classification and use Game Optimizer as supported. Do not compensate for a lost PC mode with excessive sharpening.

Branch 5: Did firmware or reset change storage?

Record exact firmware and whether the event followed update, initial reset, account sign-in or Home layout migration. Recreate one tile after update and observe multiple normal boots. A single reset during migration does not prove a continuing bug.

Update only through LG and report reproducible persistence. Factory reset erases input metadata and should be last. It does not roll firmware back. Avoid unofficial downgrade packages and hidden database/service edits.

Step-by-Step Safe Fix

Record firmware, port, source, topology and current name/icon.

Direct-connect one active source and edit the exact tile in Home Hub.

Save, photograph, and test several normal restarts.

Remove AVR/switch/capture hardware and compare.

Disable SIMPLINK temporarily; restore CEC devices one by one.

Test TV-first versus source-first startup without hot-plugging.

For PC, verify native resolution and a chroma/text pattern after classification.

Keep PC mode if needed; treat icon as functional, not purely cosmetic.

Update officially and reset Home/input settings before full factory reset.

Send LG the exact trigger and before/after photos if it persists.

Do not use service remotes, hidden menus, firmware downgrade, registry/database hacks or repeated live HDMI removal. Input renaming should remain reversible through supported UI.