Help us document errors that can be found in this log file, and what each error may mean and the appropriate solution.
Log file used by sddm for its interaction with the X.org server.
A major shortcoming of this file is that the log entries do not include any timestamp.
QXcbConnection: XCB error: 3 (BadWindow)
QXcbConnection: XCB error: 3 (BadWindow), sequence: 886, resource id: 39845897, major code: 18 (ChangeProperty), minor code: 0