Diagnosis and practical fixes for problems affecting classic games, consoles, controllers, displays, and related hardware.
Fix one already-visible KNULLI game when scraping shows no confident result, the wrong candidates, or a wrong result already applied. Use Input only to change the scraper search query, then select a confidently identified result. This documentation-led workflow does not rename ROMs, edit XML, or guarantee a provider match or rollback.
A source-bounded recovery for KNULLI Scarab 20260511 and current RG CubeXX builds when Quick Resume repeatedly launches the same game before EmulationStation. Confirm active SHARE/system/knulli.conf, back it up, remove three exact complete lines, and verify one controlled boot. Firefly and Gladiator II are excluded; owner tested: no.
If an RG CubeXX game reaches stable play with an external controller but the built-in gameplay controls do not respond, test the release-correct KNULLI Player 1 setting. This narrow procedure covers Firefly, Gladiator II, and Scarab with one-variable verification and setting-only rollback.
When a KNULLI game is visible but will not launch, visibility proves discovery—not compatible content, required firmware, or runtime identity. Use this source-bounded decision tree to record the before-state, follow only evidence-supported branches, and roll back each controlled comparison.
If M+B does not open RetroArch Quick Menu on an RG CubeXX, first confirm a libretro session and use the exact built-in sequence: hold Menu/Function, then tap physical B. This release-pinned guide checks player-1 ownership, scoped RetroArch Menu settings, Full UI, and the N64 Limited Hotkeys exception without destructive resets or config edits.
If Quick Load will not restore a state in a KNULLI RetroArch game, check RetroAchievements Hardcore Mode before assuming the state system is broken. This release-pinned guide explains the disputed Create wording, the consistent Load restriction, the Casual eligibility tradeoff, and a safe FCEUmm test using one fresh slot.
If KNULLI lists a second SD card but still uses Internal storage, verify the selected label and capacity, restart once, and compare User Disk Usage. This source-based guide explains UUID persistence, Internal fallback, replacement cards, ambiguous entries, and why fresh folders do not prove migration.
KNULLI can finish a scrape without displaying box art. This documentation-based guide separates provider errors, no-match results, missing media, theme-field mismatches, skipped games, and gamelist refresh issues across Firefly, Gladiator II, and Scarab using one visible game and Box 2D.
KNULLI Wi‑Fi failures are not all the same. This documentation-based guide separates missing networks, authentication failures, absent IP addresses, disconnects, and band/access-point differences on RG CubeXX across Firefly, Gladiator II, and Scarab—without weakening network security.
KNULLI can be missing from Windows Network even when its SMB share works directly. This documentation-based guide separates discovery, hostname, IP, credential, and read/write failures across Firefly, Gladiator II, and Scarab, including Windows 11 24H2 security constraints.