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 (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. invalid ppi samsung
adb shell wm density adb shell dumpsys display | grep -i ppi Physical density: 500 (actual PPI ~501) GOS: Invalid PPI - falling back to default
if (display->dpi <= 0) pr_warn("Invalid PPI, using default 420\n"); display->dpi = 420; 0) for display 1