NVIDIA + Wayland (reported on CachyOS/KDE, driver 615.71, webkit2gtk
2.52.6): no window. GDK dies with "Error 71 (Protocol error) dispatching to
Wayland display"; forced onto XWayland, WebKit's DMA-BUF renderer then fails
with "Failed to create GBM buffer … Invalid argument". The reporter's
workaround, WEBKIT_DISABLE_DMABUF_RENDERER=1 GDK_BACKEND=x11, runs fine.
gpu_workarounds::apply(), first thing in main() (before GTK/WebKit init):
when the NVIDIA driver is loaded (/proc/driver/nvidia/version or
/sys/module/nvidia), set WEBKIT_DISABLE_DMABUF_RENDERER=1, and on a Wayland
session that has XWayland (DISPLAY set) also GDK_BACKEND=x11. Values the user
already set win; LOTUS_NO_GPU_WORKAROUNDS=1 turns it all off. Logs what it
set to stderr. Non-NVIDIA systems are untouched. Unit tests for the decision.
config.json: webAppUrl = https://chat.lotusguild.org, used by the web client
(cinny `calls-open-in-browser`) to send calls this WebKitGTK build can't make
to the web app in the browser.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA
Lotus CIandClaude Opus 5.5
df760abdc7