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* Linux: draw on the desktop's GPU, not always the discrete one egui asks wgpu for the high-performance adapter. On a hybrid laptop in PRIME on-demand mode (Intel + NVIDIA, X11, GNOME) that is the NVIDIA GPU while the display server runs on the Intel one, so every frame is copied between the GPUs. During a resize the window then shows stale or garbled frames and can stop drawing until it is resized again. On Linux and the BSDs, ask for no power preference instead: wgpu then takes the first adapter Vulkan lists, and Mesa's device-select layer lists the display server's GPU first (or the one DRI_PRIME picks). Measured on an RTX 4060 + Intel RPL-S laptop: in on-demand mode the list starts with the Intel GPU, in `prime-select nvidia` mode with the NVIDIA one, so the launcher draws on whichever GPU drives the screens. WGPU_POWER_PREF still overrides it. Windows and macOS keep their current choice. Refs #69 * Linux GPU: keep wgpu's adapter order, but a software rasterizer last Without Mesa's device-select layer the Vulkan order follows the ICD files, and lavapipe can come before the real driver. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Brandon Thomas <echelon@gmail.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>