python3-xlib_0.14+20091101-5_all.deb doesn't fix the issue too:
Traceback (most recent call last): File "/usr/bin/caffeine", line 36, in <module> ewmh = EWMH() File "/usr/lib/python3/dist-packages/ewmh.py", line 50, in __init__ self.display = _display or display.Display() File "/usr/lib/python3/dist-packages/Xlib/display.py", line 80, in __init__ self.display = _BaseDisplay(display) File "/usr/lib/python3/dist-packages/Xlib/display.py", line 62, in __init__ display.Display.__init__(*(self, ) + args, **keys) File "/usr/lib/python3/dist-packages/Xlib/protocol/display.py", line 129, in __init__ raise error.DisplayConnectionError(self.display_name, r.reason) Xlib.error.DisplayConnectionError: Can't connect to display ":0": b'Invalid MIT-MAGIC-COOKIE-1 key'
python3- xlib_0. 14+20091101- 5_all.deb doesn't fix the issue too:
Traceback (most recent call last): caffeine" , line 36, in <module> python3/ dist-packages/ ewmh.py" , line 50, in __init__ python3/ dist-packages/ Xlib/display. py", line 80, in __init__ display) python3/ dist-packages/ Xlib/display. py", line 62, in __init__ Display. __init_ _(*(self, ) + args, **keys) python3/ dist-packages/ Xlib/protocol/ display. py", line 129, in __init__ nnectionError( self.display_ name, r.reason) DisplayConnecti onError: Can't connect to display ":0": b'Invalid MIT-MAGIC-COOKIE-1 key'
File "/usr/bin/
ewmh = EWMH()
File "/usr/lib/
self.display = _display or display.Display()
File "/usr/lib/
self.display = _BaseDisplay(
File "/usr/lib/
display.
File "/usr/lib/
raise error.DisplayCo
Xlib.error.