[ubuntu-dev] Bug#790322: /usr/share/gdebi/gdebi-gtk: prompt for root password returns incorrect password

[Jatin]

Package: gdebi
Version: 0.9.5.7+nmu1
Followup-For: Bug #790322

I have same problem I try to install Unity (Game Engine) and other .deb files
using GDebi it asks for the root password and when i enter it returns and says
incorrect password everytime.
When i try using dpkg -i It works like a charm but not with GDebi.



-- System Information:
Debian Release: 9.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-6-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8), LANGUAGE=en_IN:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gdebi depends on:
ii  gdebi-core        0.9.5.7+nmu1
ii  gir1.2-gtk-3.0    3.22.11-1
ii  gir1.2-vte-2.91   0.46.1-1
ii  gksu              2.0.2-9+b1
ii  gnome-icon-theme  3.12.0-2
ii  python3           3.5.3-1
ii  python3-gi        3.22.0-2

Versions of packages gdebi recommends:
ii  libgtk2-perl      2:1.2499-1
ii  lintian           2.5.50.4
ii  shared-mime-info  1.8-1

gdebi suggests no packages.

-- no debconf information