> PS: Mike, can you try to added these libes, and then compile with jam to see > if your X problem persists? > > Yes, same errors: :~/argyll2/spectro$ ./dispcal -i 92 -v -r Setting up the instrument X Error of failed request: BadValue (integer parameter out of range for operation) Major opcode of failed request: 18 (X_ChangeProperty) Value in failed request: 0x40 Serial number of failed request: 15 Current serial number in output stream: 17