( SOLVED )gnome-terminal, su, sudo, gksu, gksudo does not work

Question

Hello,
In my fresh installed gnome3 graphical environment, in gnome-terminal, I can not gain root access.
I've tried diverse su commands.
1. su command, ends with:
su -
Password:
su: Authentication failure
2. sudo command, ends with:
sudo -l
[sudo] password for root:
Sorry, try again.
[sudo] password for root:
Sorry, try again.
[sudo] password for root:
sudo: 2 incorrect password attempts
Of course - each time, I typed correct password.
In my sudoers file, group wheel ( into which belongs user I logged in ) has permissions to execute any command.
3. gksudo with debug:
gksudo -ld gnome-terminal
No ask_pass set, using default!
xauth: /tmp/libgksu-stbGos/.Xauthority
STARTUP_ID: gksudo/gnome-terminal/879-0-Bex_TIME0
cmd[0]: /usr/bin/sudo
cmd[1]: -H
cmd[2]: -S
cmd[3]: -p
cmd[4]: GNOME_SUDO_PASS
cmd[5]: -u
cmd[6]: root
cmd[7]: --
cmd[8]: gnome-terminal
buffer: -GNOME_SUDO_PASS-
brute force GNOME_SUDO_PASS ended...
Yeah, we're in...
sudo: 1 incorrect password attempt
xauth: /tmp/libgksu-stbGos/.Xauthority
xauth_env: /var/run/gdm/auth-for-tangram-9JYTNt/database
dir: /tmp/libgksu-stbGos
I've been asked for my password, not root, after typing I get "incorrect password attempt", if I type root pwd I get the same.
4. Same with this command:
gksu -ld gnome-terminal
No ask_pass set, using default!
xauth: /tmp/libgksu-SBPcOB/.Xauthority
STARTUP_ID: gksu/gnome-terminal/1028-0-Bex_TIME0
cmd[0]: /usr/bin/sudo
cmd[1]: -H
cmd[2]: -S
cmd[3]: -p
cmd[4]: GNOME_SUDO_PASS
cmd[5]: -u
cmd[6]: root
cmd[7]: --
cmd[8]: gnome-terminal
buffer: -GNOME_SUDO_PASS-
brute force GNOME_SUDO_PASS ended...
Yeah, we're in...
sudo: 1 incorrect password attempt
xauth: /tmp/libgksu-SBPcOB/.Xauthority
xauth_env: /var/run/gdm/auth-for-tangram-6RCSoJ/database
dir: /tmp/libgksu-SBPcOB
In multi-user-mode I can login to root account.
Last edited by tangram (2013-12-23 08:42:09)

Answer 1

tangram wrote:
Hurrican, ok, there is no need to install antother terminal, as I wrote it did not work also in xterm.
Yesterday evening, tired and sad that gk(su|sudo) still does not work,
as the "last chance idea", I logged in into multi-user mode ( init level 3 ) and changed root's password,
then loged in into graphical mode ( init level 5 ), start gnome-terminal and suddenly ... command "su -" started to work.
By the way, similar solution ( but with chroot ) has suggested Gulver in his post ( this thread, answer #2 ).
The question is, why root's password, set during install, after finished installation is recognized in text mode, but not im graphical ?
First root's password was really simple, like "dog4356", without any national chars.
You're right. I don't even have xterm installed so I guess I just singled out gnome-terminal and forgot that xterm also wasn't working.
Forgive me for my shaky advice. Like you I've been super busy, and sweating out a fever of 102 degrees (that's Fahrenheit no my
blood wasn't boiling ). Anyways, glad you got it working. After reading over the whole thread and thinking about it for a little bit, I
can't really make a good guess as to what was happening.
I'm sure you probably had tried this, but you could have typed the password out in the command line so you could see it. If there was
something wrong with it, it would have shown up there as well. If it was perfectly fine, then it would have been very, very weird.
The important thing is you got it working.
Merry Christmas.