The link is: https://gitlab.freedesktop.org/drm/nouveau/-/issues/12 If it is truly not a consequential error (which it doesn't seem to be), it would be nice if it just didn't post to the log. Same is true for these: "qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow)". I get way too many of them at times, too.