Error executing command as another user no authentication agent found

Arch Linux

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#1 2017-03-30 06:55:13

[SOLVED] gparted won’t start (polkit problem)

When I try to execute the command from gparted desktop file in terminal, I get this output.

I do have polkit installed and tried to run «/usr/libexec/polkit-gnome-authentication-agent-1», but that didn’t help.

Last edited by Phalkon (2017-04-02 10:33:32)

Why Linux? Because it doesn’t hide anything from you. It puts you so closely in control of your machine that you can feel its heartbeat.

#2 2017-03-30 08:08:37

Re: [SOLVED] gparted won’t start (polkit problem)

Which wm/de are you using?

Evil #archlinux@libera.chat channel op and general support dude.
. files on github, Screenshots, Random pics and the rest

#3 2017-03-30 12:27:17

Re: [SOLVED] gparted won’t start (polkit problem)

Arch doesn’t use libexec, what distro are you running?

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#4 2017-04-01 05:15:12

Re: [SOLVED] gparted won’t start (polkit problem)

Distro: Arch Linux
WM: i3

It’s not that big of a deal. I can always run ‘sudo gparted’ from the terminal.
But ‘gparted_polkit’ should use polkit to ask for root password, right?

Why Linux? Because it doesn’t hide anything from you. It puts you so closely in control of your machine that you can feel its heartbeat.

#5 2017-04-01 05:17:53

Re: [SOLVED] gparted won’t start (polkit problem)

Assuming you have an authentication agent running, sure.

Last edited by Scimmia (2017-04-01 05:18:06)

#6 2017-04-02 10:31:47

Re: [SOLVED] gparted won’t start (polkit problem)

I do have polkit installed and tried to run «/usr/libexec/polkit-gnome-authentication-agent-1», but that didn’t help.

Arch doesn’t use libexec, what distro are you running?

But ‘gparted_polkit’ should use polkit to ask for root password, right?

Assuming you have an authentication agent running, sure.

Right, I needed to run «/usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1».
Solved, thanks.

Last edited by Phalkon (2017-04-02 10:32:52)

Why Linux? Because it doesn’t hide anything from you. It puts you so closely in control of your machine that you can feel its heartbeat.

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Arch Linux

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#1 2020-10-31 01:00:55

Authentication agent on XRDP

I’m trying to set up a headless server on which I need to connect remotely to the server and virtual machines (host and client running Arch) using XRDP(server) and Windows Remote Desktop(client), everything is good until I need to run software than need authentication agents, ie: gparted, virt-manager and/or gnome keyring ie: github desktop, I need to know if there is a way I have 3 days trying it everything I found on Internet, until today I’ve tried on Gnome, KDE Plasma, LXqt, XFCE, Openbox, I3, no matter what I do on my .xinitrc I currently have:

#!/bin/bash
.
/usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1 &
exec dbus-run-session startxfce4

When I run Gpard on terminal this is the output:
Error executing command as another user: No authentication agent found.

If I try to manually run gnome polkit agent from /usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1 I got:
polkit-gnome-authentication-agent-1:2125): polkit-gnome-1-WARNING **: 17:59:07.470: Unable to determine the session we are in: No session for pid 2125.

Hope you could give me some advice, before throwing my server through the window.

#2 2020-10-31 01:06:00

Re: Authentication agent on XRDP

Why are you starting startxfce4 with dbus-run-session?

Please use code tags for command, their outputs and listings e.t.c..
Edit:
Also please post the full contents of

Last edited by loqs (2020-10-31 01:12:45)

#3 2020-10-31 03:48:19

Re: Authentication agent on XRDP

Thanks for the reply.

I haven’t change anything on the default xinitrc code, othen ran deleting the tw default code and adding my session,
runing:

does not work for destops like xfce4 or kde, works for openbox and i3.

Источник

No polkit authentication agent found since 9.0.0 #105

sudo-prompt exec fails with «no polkit authentication agent found» on 9.0.0 but succeeds on 8.2.0.

Steps to Reproduce:

This is occurring on a Chromebook but you may be able to repro on any Debian container with the same packages. Installed packages. Passwordless sudo is enabled for all users.

See https://bugs.chromium.org/p/chromium/issues/detail?id=995175 for some more context, exact Chrome OS version and platform, and other details.

The text was updated successfully, but these errors were encountered:

Thanks @feileacan for the detailed report.

Please would you try rebooting your system and then running the test script for 9.0.0 before doing anything else?

This might have something to do with these issues:

In addition to rebooting and running the test script (Option 1 above), please would you also try the following:

Option 1: Same issue
Option 2: Prompts for password. Pressing enter then results in auth failure:

The account has no password:

The account is locked by default, but I see the same error for unlocked: :: or :*:

If I set a password I get a different error:

There’s no graphical agent installed so pkexec failing when using —disable-internal-agent is expected, but not sure what changed between 8.2.0 and 9.0.0 that it’s no longer able to auth.

Thanks @feileacan, option 2 is almost exactly what 8.2.0 does, except that 8.2.0 first tries to execute the command with sudo -n :

Also, given that «passwordless sudo is enabled for all users» as you say, pkexec shouldn’t be failing for you like it did in option 2 with Error executing command as another user: Not authorized .

I think then that this commit is what caused the issue in pkexec with passwordless sudo environments to be exposed: 8c1a302

It’s not a bug in sudo-prompt, but an interaction between passwordless sudo being allowed and pkexec. I will see how we can workaround this.

The change in 8c1a302 was necessary to fix a serious idempotency issue.

You might want to take this up in the Chromium issue. This should never fail for a valid password:

Ah, not running via sudo would do it.

As far as I can tell policykit uses its own rules so pkexec doesn’t care whether the user has sudo access or not, it still requires auth: https://gitlab.freedesktop.org/polkit/polkit/blob/master/actions/org.freedesktop.policykit.policy.in#L13

Adding a rule for policykit.exec means users are no longer prompted which gets things working again.

As regards the pkexec «No session for cookie» issue, looks like the same problem discussed in NixOS/nixpkgs#18012, using a separate pkttyagent works.

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Arch Linux

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#1 2020-08-04 12:33:04

[SOLVED] I am not administrator in KDE!

Hi,
I just installed arch linux with KDE.
At the time of writing this, I do not have a monitor, but did have a TV. I tested the installation on the TV, but I cannot work on the TV. So I setup chrome-remote-desktop to work with my laptop and the newly installed arch linux computer with the TV.
It seems to be working, without the TV.

I began customising KDE in system settings, then noticed that I cannot customising the login screen.
System Settings -> Startup and Shutdown -> Login Screen (SDDM)
Under the heading Login Screen, I see » You are not allowed to «You are not allowed to save the configuration».
Why is this the case?

Another Observation:
I tried to connect to wifi, (was using cable before) but see this notification: «org.freedesktop.NetworkManager.network-control request failed: not authorized»

But when I got to System Settings -> Account Details -> User Manger -> : I see that «Enable administrator privileges for this user» is checked.
Is this because I have Chrome Remote Desktop running?
Thanks

Last edited by arushgupta2007 (2020-08-14 04:46:50)

#2 2020-08-04 14:32:17

Re: [SOLVED] I am not administrator in KDE!

Is your user a member of the wheel group?

Nothing is too wonderful to be true, if it be consistent with the laws of nature — Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. — Alan Turing
—
How to Ask Questions the Smart Way

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Arch Linux

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#1 2014-01-18 16:13:24

[solved] gparted error

hi fellows,
if I launch gparted from menu, it doesn’t start.

and if I launch gparted_polkit from terminal I get this error:

how can I solve these problems?

Last edited by nTia89 (2014-01-23 17:38:59)

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#2 2014-01-18 16:18:56

Re: [solved] gparted error

Do you have polkit installed?

#3 2014-01-18 16:19:44

Re: [solved] gparted error

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#4 2014-01-18 16:21:30

Re: [solved] gparted error

You need a polkit authentication agent running. Something like lxpolkit, polkit-kde, polkit-gnome, etc

#5 2014-01-18 16:26:29

Re: [solved] gparted error

You need a polkit authentication agent running. Something like lxpolkit, polkit-kde, polkit-gnome, etc

then, how can I start the agent?

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#6 2014-01-18 16:32:18

Re: [solved] gparted error

#7 2014-01-18 16:53:16

Re: [solved] gparted error

I found the issue:

polkit-gnome executes policykit agent only in a gnome session
because the .desktop file contains

now I installed (beside polkit-gnome) lxpolkit

result: now gparted_polkit asks the password but when I type it, return another error:

how can I solve it?

Last edited by nTia89 (2014-01-18 16:54:08)

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#8 2014-01-18 16:57:15

Re: [solved] gparted error

#9 2014-01-18 17:01:28

Re: [solved] gparted error

sure, this is the way I used since I installed gparted: open a terminal and launch gparted with sudo
that is slower than click on the menu icon
. now I want to fix it.

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#10 2014-01-23 13:58:51

Re: [solved] gparted error

anyone else have this problem?

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#11 2014-01-23 17:06:25

Re: [solved] gparted error

You can have only one of the two packages installed. Using both they will block each other.
On XFCE I stayed with polkit-gnome and created the dektopfile in /.config/autostart.
Polkit-Gnome.desktop:

Maybe it works also with your DE or WM.

#12 2014-01-23 17:10:25

Re: [solved] gparted error

No problems here. I can run gparted_polkit just fine using polkit-gnome under bspwm. This is how I start it in my .xinitrc:
/usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1 &

What wm are you using and how do you start lxpolkit?

Last edited by Steef435 (2014-01-23 17:10:54)

#13 2014-01-23 17:41:29

Re: [solved] gparted error

ok, now it is solved!

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#14 2014-01-23 18:14:48

Re: [solved] gparted error

Nice! Would you mind sharing how you solved it?

Last edited by Steef435 (2014-01-23 18:15:19)

#15 2014-01-23 20:12:22

Re: [solved] gparted error

sure! I summarize:
even though I had a policykit agent installed (polkit-gnome)
gparted_polkit hasn’t work
the problem was that polkit-gnome starts the agent at startup ONLY in a GNOME environment
so, I that use openbox, I didn’t have any agent
the solution for polkit-gnome and consequently gparted_polkit problem is to start manually the policykit agent, how do it has no importance.
personally I already use the autostart file of openbox for other thing, so it was easy add the line

+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome

#16 2014-10-21 00:24:06

Re: [solved] gparted error

anyone else have this problem?

I do but even more of a problem and maybe its related, ever since the newest kernel, I can’t install

VMware-Workstation-Full-10.0.3-1895310.x86_64.bundle, I get ths error:

Extracting VMware Installer. done.
Gtk-Message: Failed to load module «canberra-gtk-module»: libcanberra-gtk-module.so: cannot open shared object file: No such file or directory
Attempt to unlock mutex that was not locked
/tmp/vmis.SbhNmP/install/vmware-installer/vmware-installer: line 56: 1594 Aborted (core dumped) VMWARE_INSTALLER=»$VMWARE_INSTALLER» VMISPYVERSION=»$VMISPYVERSION» «$VMWARE_INSTALLER»/vmis-launcher «$VMWARE_INSTALLER»/vmware-installer.py «$@»

«An it harm none, do what thou wilt»

#17 2014-10-21 01:27:40

Re: [solved] gparted error

Pednick, please do not «necrobump» old threads, especially solved ones. Also I don’t see the vaguest connection between your issue and the one in this thread. Please start a new thread if you want help with your issue.

«UNIX is simple and coherent. » — Dennis Ritchie, «GNU’s Not UNIX» — Richard Stallman

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Option 1: Same issue
Option 2: Prompts for password. Pressing enter then results in auth failure:

aryanonametyrell@penguin:~$ "/usr/bin/pkexec" /bin/bash -c "echo SUDOPROMPT; echo hello"
==== AUTHENTICATING FOR org.freedesktop.policykit.exec ===
Authentication is needed to run `/bin/bash' as the super user
Authenticating as: aryanonametyrell
Password: 

polkit-agent-helper-1: pam_authenticate failed: Authentication failure
==== AUTHENTICATION FAILED ===
Error executing command as another user: Not authorized

This incident has been reported.

The account has no password:

aryanonametyrell@penguin:~$ sudo grep $USER /etc/shadow
aryanonametyrell:!:18150:0:99999:7:::

The account is locked by default, but I see the same error for unlocked: :: or :*:

If I set a password I get a different error:

aryanonametyrell@penguin:~$ "/usr/bin/pkexec" /bin/bash -c "echo SUDOPROMPT; echo hello"
==== AUTHENTICATING FOR org.freedesktop.policykit.exec ===
Authentication is needed to run `/bin/bash' as the super user
Authenticating as: aryanonametyrell
Password: 
polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
==== AUTHENTICATION FAILED ===
Error executing command as another user: Not authorized

This incident has been reported.

Option 3:

aryanonametyrell@penguin:~$ "/usr/bin/pkexec" --disable-internal-agent /bin/bash -c "echo SUDOPROMPT; echo hello"
Error executing command as another user: No authentication agent found.

Option 4:

aryanonametyrell@penguin:~$ export SUDO_PROMPT_TEST_ENV="hello"
aryanonametyrell@penguin:~$ "/usr/bin/pkexec" --disable-internal-agent /bin/bash -c "echo SUDOPROMPT; echo "$SUDO_PROMPT_TEST_ENV""
Error executing command as another user: No authentication agent found.

There’s no graphical agent installed so pkexec failing when using —disable-internal-agent is expected, but not sure what changed between 8.2.0 and 9.0.0 that it’s no longer able to auth.

Using CentOS Release 6.4 x86 when I go to System > Administration > Add/Remove Software and try to add software or refresh the package list, I immediately get the following error:

Authorization Failed

You have failed to provide correct authentication. Please check any passwords or account settings.

Failed to obtain authentication

However the reason I failed to provide authentication is because I was never asked for a password at all. I’m running as a normal user who is a member of the wheel group and can run commands via sudo. I also can su to root. I am able to install software via yum.

How can I fix the issue where Add/Remove Software never asks for a password?

UPDATE: The issue appears to be with PolicyKit. Specifically, I have no authentication agent running and trying to start it results in the error

Unable to determine the session we are in: Remote Exception invoking org.freedesktop.ConsoleKit.Manager.GetSessionForUnixProcess()

Some terminal output:

[jnet@dogYears Desktop]$ pkexec echo "test"
Error executing command as another user: No authentication agent was found.

[jnet@dogYears Desktop]$ ps awwwx|grep polkit        
 2059 ?        S      0:00 /usr/libexec/polkit-1/polkitd
28688 pts/3    S+     0:00 grep polkit

[jnet@dogYears Desktop]$ /usr/libexec/polkit-gnome-authentication-agent-1
(polkit-gnome-authentication-agent-1:28725): polkit-gnome-1-WARNING **: Unable to determine the session we are in: Remote Exception invoking org.freedesktop.ConsoleKit.Manager.GetSessionForUnixProcess() on /org/freedesktop/ConsoleKit/Manager at name org.freedesktop.ConsoleKit: org.freedesktop.ConsoleKit.Manager.GeneralError: Unable to lookup session information for process '28725' org.freedesktop.ConsoleKit.Manager.GeneralError Unable%20to%20lookup%20session%20information%20for%20process%20%2728725%27

I have an Ubuntu 16.04 headless system that I recently installed xfce4 and vnc4server onto. I can connect via VNC and see the desktop, but trying to launch privileged apps such as Synaptic silently fails.

Checking the synaptic.desktop entry shows use of synaptic-pkexec, which is just a small wrapper script for using pkexec.

Running the desktop entry directly shows the issue:

$ pkexec --disable-internal-agent "/usr/sbin/synaptic" "$@"
Error executing command as another user: No authentication agent found.

Question is — how do I resolve this? I’m new to PolicyKit, and I’m a bit surprised that apt install xfce4 apparently did not setup an authentication agent. Or perhaps I’m not automatically starting the desktop properly — here’s my startup script:

~$ cat .vnc/xstartup
#!/bin/sh

# Uncomment the following two lines for normal desktop:
# unset SESSION_MANAGER
# exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
# x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
x-window-manager &
startxfce4 &

0

2

abc123@slackware:~$ grub-customizer
==== AUTHENTICATING FOR net.launchpad.danielrichter2007.pkexec.grub-customizer ===
Authentication is required to run Grub Customizer
Authenticating as: root
password:
polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
==== AUTHENTICATION FAILED ===
Error executing command as another user: Not authorized

root@slackware:~# slackpkg file-search polkit

Looking for polkit in package list. Please wait... DONE

The list below shows the packages that contains "polkit" file.

[ installed ] - NetworkManager-1.8.4-i586-1_slack14.2
[ installed ] - udisks-1.0.5-i586-3
[ installed ] - udisks2-2.1.5-i586-2
[ installed ] - upower-0.9.23-i586-3
[ installed ] - hplip-3.16.5-i586-3
[uninstalled] - baloo-4.14.3-i586-2
[uninstalled] - k3b-2.0.3-i586-2
[uninstalled] - kde-runtime-4.14.3-i586-3
[uninstalled] - kde-workspace-4.11.22-i586-4
[uninstalled] - kdepim-4.14.10-i586-1
[uninstalled] - kwalletmanager-4.14.3-i586-2
[uninstalled] - nepomuk-core-4.14.3-i586-2
[uninstalled] - polkit-kde-agent-1-9d74ae3_20120104git-i586-2
[uninstalled] - polkit-kde-kcmodules-1-001bdf7_20120111git-i586-2
[uninstalled] - wicd-kde-0.3.0_bcf27d8-i586-2
[ installed ] - ConsoleKit2-1.0.0-i586-3
[ installed ] - GConf-3.2.6-i586-3
[ installed ] - polkit-0.113-i586-2
[ installed ] - polkit-gnome-0.105-i586-1
[ installed ] - polkit-qt-1-0.103.0-i486-1
[ installed ] - xf86-video-intel-git_20160601_b617f80-i586-1
[ installed ] - blueman-2.0.4-i586-1
[ installed ] - gparted-0.26.1-i586-1
[uninstalled] - Thunar-1.6.10-i586-3
[uninstalled] - xfce4-power-manager-1.4.4-i586-4
[uninstalled] - xfce4-session-4.12.1-i586-2

You can search specific packages using "slackpkg search package".

root@slackware:~# gparted
No protocol specified

(gpartedbin:28850): Gtk-WARNING **: cannot open display: :0