adb shell wm density reset Then restart both displays by switching folding mode twice.
GOS: Invalid PPI - falling back to default resolution GOS misreads display density when resolution is changed via Settings → Display → Screen resolution (HD+/FHD+/WQHD). Switching resolutions rapidly can temporarily confuse the service. 2.3. Third-Party Apps (Camera, Benchmark Tools) Log example: invalid ppi samsung
ERROR: Invalid PPI value (0) for display 0 FATAL: DisplayMetrics density out of range Corrupted build.prop entries ( ro.sf.lcd_density ), failed display calibration, or after a system update. 2.2. Samsung Game Launcher / Game Optimizing Service (GOS) Log example: adb shell wm density reset Then restart both
Invalid PPI (0,0) for display 1, skipping content scaling A third‑party launcher forced the outer display to a non‑standard DPI via wm density . When the inner display activated, its PPI was calculated relative to the outer’s modified value, resulting in zero. Samsung Game Launcher / Game Optimizing Service (GOS)
Camera2: Invalid PPI reported by DisplayManager - using 420 dpi default Apps that query DisplayMetrics receive xdpi or ydpi = 0.0 or negative, often due to a transient display manager state. 2.4. Custom Development (TWRP, LineageOS, Kernel Compilation) Error: error: invalid PPI value in device tree during lunch or brunch .
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