Caffeine don't start on Ubuntu 14.04

[libuntu]

Caffeine don't work on Ubuntu 14.04.3, the follow bug display on apport (which incidentally never sends error):

"Caffeine crashed with Xlib.error.DisplayConnectionError in__init__(): can't connect to Display "0": b'No protocol specified\n'"

I use Ubuntu 14.04.3 64 bits
Mother Board: Intel DG41RQ
4 GB RAM DDR2
CPU Intel Core 2 Duo E7400 2,8GHz x2
Graphic Card NVIDIA GeForce 9800 GT
Graphics Driver: privative 340.93

Attach the screen

[melomane (domenico-guerra)]

i have the same problem, caffeine crash after upgrade to 14.04.3 , was working on 14.04.2

[libuntu (libuntu)]

yeah, it works and caffeine it's work too on Ubuntu 12.04. Please clicking on " This bug affects you" so they begin to assign the error or copy this link: https://bugs.launchpad.net/caffeine/+bug/1494415/+affectsmetoo and click on "This bug affects me. "

regards

[Jon (doogie544)]

Same issue here as well.

Ubuntu 14.04.03
Fresh install on a new computer.

Nvidia Geforce GTX 970 with driver 355- installed from the new "Ubuntu Graphics ppa"

Intel i7 (Haswell) Quad core multithreading enabled

Application simply crashes with the above error

(caffeine-indicator does does as well)

[Jason Gambrel (jaygambrel)]

I just added a bug report for elementary OS 0.3.1 which uses the same hardware enablement stack as Ubuntu 14.04.03. Same problem. Here is the output when runningit from the terminal:

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'No protocol specified\n'

Any help would be appreciated. Thank you.

Jay

[libuntu (libuntu)]

I've re-install Ubuntu 14.04 again with the driver nvidia-340 by default (recently it was release) with xorg server 1.15 and kernel Linux 3.19 and it work caffeine!!! the problem is caused by the ppa ubuntu graphic.

[David M. Karr (davidmichaelkarr)]

I'm seeing this also. I'm running it in a Ubuntu 14.04.3 VM, hosted on CentOS7.1, on an HP Zbook laptop. If it matters, the info from "lspci" for my display adapter says "NVIDIA Corporation GK107GLM [Quadro K1100M] (rev a1)".

[libuntu (libuntu)]

The problem is on lts-vivid stack graphics:

https://bugs.launchpad.net/bugs/1505857

[Ales Kvapil (aleskva)]

Same like @melomane. 14.04.2 fully working, then upgrade to 14.04.3 - nothing. Clean install of 14.04.3 - nothing. Any hack, how to make it work (partially at least)?

[Reuben Thomas (rrt)]

This is a bug in python-xlib. Update to the version from xenial, as it's unlikely to be fixed in Trusty.