[Bug 1713313] Re: Unable to launch pkexec'ed applications on Wayland session

[costales]

Hi,

Would this hack fix the issue? (Add/Remove xhost +si:localuser:root to the launcher)
I don't know if this could means something dangerous in Wayland.

https://bazaar.launchpad.net/~costales/gui-ufw/wayland/revision/19

Thanks in advance.

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https://bugs.launchpad.net/bugs/1713313

Title:
  Unable to launch pkexec'ed applications on Wayland session

Status in Back In Time:
  Fix Released
Status in Boot-Info:
  Fix Committed
Status in Boot-Repair:
  Fix Committed
Status in GNOME Terminal:
  New
Status in HPLIP:
  New
Status in Settings editor for LightDM GTK+ Greeter:
  New
Status in OS-Uninstaller:
  Fix Committed
Status in Y PPA Manager:
  New
Status in apport package in Ubuntu:
  New
Status in apt-offline package in Ubuntu:
  New
Status in backintime package in Ubuntu:
  Confirmed
Status in budgie-welcome package in Ubuntu:
  Invalid
Status in caja-admin package in Ubuntu:
  New
Status in cinnamon package in Ubuntu:
  Invalid
Status in ettercap package in Ubuntu:
  Confirmed
Status in gdebi package in Ubuntu:
  Confirmed
Status in gdm3 package in Ubuntu:
  Won't Fix
Status in gnunet-gtk package in Ubuntu:
  Confirmed
Status in gparted package in Ubuntu:
  Invalid
Status in gui-ufw package in Ubuntu:
  Confirmed
Status in guidedog package in Ubuntu:
  New
Status in hplip package in Ubuntu:
  Confirmed
Status in italc package in Ubuntu:
  New
Status in laptop-mode-tools package in Ubuntu:
  New
Status in lightdm-gtk-greeter-settings package in Ubuntu:
  Confirmed
Status in nautilus-admin package in Ubuntu:
  New
Status in needrestart-session package in Ubuntu:
  Confirmed
Status in nemo package in Ubuntu:
  Confirmed
Status in policykit-1 package in Ubuntu:
  Invalid
Status in scanmem package in Ubuntu:
  Invalid
Status in scap-workbench package in Ubuntu:
  Confirmed
Status in sirikali package in Ubuntu:
  Fix Released
Status in synaptic package in Ubuntu:
  Confirmed
Status in thunar package in Ubuntu:
  New
Status in tuned package in Ubuntu:
  New
Status in ubuntustudio-controls package in Ubuntu:
  Fix Released
Status in ubuntustudio-default-settings package in Ubuntu:
  Invalid
Status in update-notifier package in Ubuntu:
  New
Status in xdiagnose package in Ubuntu:
  Confirmed
Status in xubuntu-default-settings package in Ubuntu:
  Invalid
Status in zulucrypt package in Ubuntu:
  Fix Released

Bug description:
  *****************************
  Main upstream discussion & fixes example to deal with wayland:
  https://bugzilla.gnome.org/show_bug.cgi?id=776437
  *****************************

  ********************************************************************************************************************************************

  Steps to reproduce:
  1. Install Ubuntu 17.10
  2. Install backintime-qt4 or gparted application from above list (full may be acquired from https://codesearch.debian.net/search?q=pkexec+filetype%3Adesktop+path%3A*%2Fapplications%2F*&perpkg=1&page=4 )
  3a. Try to launch backintime-qt4 from shortcut "Back In Time (root)" (located in /usr/share/applications/backintime-qt4-root.desktop, it uses pkexec
  ($ cat /usr/share/applications/backintime-qt4-root.desktop | grep Exec
  Exec=pkexec backintime-qt4)
  3b. Try to launch Gparted from shortcut "GParted" (located in /usr/share/applications/gparted.desktop, it uses gparted-pkexec)
  4a.1. Back In Time does not start from GUI.
  4a.2. Back In Time shows error message in console:
  4b. gparted-pkexec does not start, reports error
  $ gparted-pkexec
  Created symlink /run/systemd/system/-.mount → /dev/null.
  Created symlink /run/systemd/system/run-user-1000.mount → /dev/null.
  Created symlink /run/systemd/system/run-user-121.mount → /dev/null.
  Created symlink /run/systemd/system/tmp.mount → /dev/null.
  No protocol specified

  (gpartedbin:12831): Gtk-WARNING **: cannot open display: :0
  Removed /run/systemd/system/-.mount.
  Removed /run/systemd/system/run-user-1000.mount.
  Removed /run/systemd/system/run-user-121.mount.
  Removed /run/systemd/system/tmp.mount.

  $ pkexec backintime-qt4

  Back In Time
  Version: 1.1.12

  Back In Time comes with ABSOLUTELY NO WARRANTY.
  This is free software, and you are welcome to redistribute it
  under certain conditions; type `backintime --license' for details.

  No protocol specified
  app.py: cannot connect to X server :0

  Expected results:
  * backintime-qt4 may be run as root

  Actual results:
  * unable to run backintime-qt4 as root

  Workaround:
  * setting "xhost +si:localuser:root" helps.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: backintime-qt4 1.1.12-2
  ProcVersionSignature: Ubuntu 4.12.0-11.12-generic 4.12.5
  Uname: Linux 4.12.0-11-generic i686
  ApportVersion: 2.20.6-0ubuntu7
  Architecture: i386
  CurrentDesktop: GNOME
  Date: Sun Aug 27 14:23:14 2017
  InstallationDate: Installed on 2017-08-26 (0 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha i386 (20170826)
  PackageArchitecture: all
  SourcePackage: backintime
  UpgradeStatus: No upgrade log present (probably fresh install)

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