Allow forcing legacy DRM interface
@@ -31,7 +31,10 @@ bool wlr_drm_check_features(struct wlr_drm_backend *backend) {
return false;
}
- if (drmSetClientCap(backend->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
+ if (getenv("WLR_DRM_NO_ATOMIC")) {
+ wlr_log(L_DEBUG, "WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
+ backend->iface = &legacy_iface;
+ } else if (drmSetClientCap(backend->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
wlr_log(L_DEBUG, "Atomic modesetting unsupported, using legacy DRM interface");
backend->iface = &legacy_iface;
} else {
