| View previous topic :: View next topic |
| Author |
Message |
open-antux
n00b
Joined: 19 Dec 2022
Posts: 10
|
 Posted: Sun Apr 28, 2024 12:32 pm Post subject: [SOLVED] parse_vt_settings: Cannot open /dev/tty0 |
 |
|
Hi all,
after the last system upgrade (27 April) I'm facing some issue with X, I use greetd as login system with the following configuration:
| Code: | [terminal]
# The VT to run the greeter on. Can be "next", "current" or a number
# designating the VT.
vt = 7
# The default session, also known as the greeter.
[default_session]
# `agreety` is the bundled agetty/login-lookalike. You can replace `$SHELL`
# with whatever you want started, such as `sway`.
# command = "agreety --cmd $SHELL"
command = "tuigreet -t -r --asterisks --power-shutdown 'sudo poweroff' --power-reboot 'sudo reboot' --cmd startx"
# The user to run the command as. The privileges this user must have depends
# on the greeter. A graphical greeter may for example require the user to be
# in the `video` group.
user = "greetd"
|
But when I try to login, the Xorg server gives me this error:
| Code: | [ 427.212] (II) NVIDIA dlloader X Driver 550.78 Sun Apr 14 06:27:13 UTC 2024
[ 427.212] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 427.212] (EE)
Fatal server error:
[ 427.212] (EE) parse_vt_settings: Cannot open /dev/tty0 (Permission denied)
[ 427.212] (EE)
[ 427.212] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 427.212] (EE) Please also check the log file at "/home/antonio/.local/share/xorg/Xorg.0.log" for additional information.
[ 427.213] (EE)
[ 427.213] (WW) xf86CloseConsole: KDSETMODE failed: Bad file descriptor
[ 427.213] (WW) xf86CloseConsole: VT_GETMODE failed: Bad file descriptor
[ 427.217] (EE) Server terminated with error (1). Closing log file.
|
This issue happen only if I try to login via greetd, when I do startx with my normal user I can correctly use my environment.
Does anyone have any ideas?
Additional info:
| Code: | λ ~/ id greetd
uid=396(greetd) gid=396(greetd) gruppi=396(greetd),27(video),97(input)
λ ~/ id antonio # normal user
uid=1000(antonio) gid=1000(antonio) gruppi=1000(antonio),7(lp),10(wheel),27(video),97(input),16(cron),48(docker),509(pipewire),79(libvirt)
λ ~/ eix elogind
[I] sys-auth/elogind
Available versions: 246.10-r3^t (~)252.9^t {+acl audit +cgroup-hybrid debug doc +pam +policykit selinux test}
Installed versions: 252.9^t(13:53:25 18/06/2023)(acl cgroup-hybrid pam policykit -audit -debug -doc -selinux -test)
Homepage: https://github.com/elogind/elogind
Description: The systemd project's logind, extracted to a standalone package
λ ~/ eix xorg-server
[I] x11-base/xorg-server
Available versions: 21.1.13(0/21.1.13)^t **9999(0/9999)*l^t {debug +elogind minimal selinux suid systemd test +udev unwind xcsecurity xephyr xnest xorg xvfb}
Installed versions: 21.1.13(0/21.1.13)^t(10:19:02 13/04/2024)(elogind udev xorg -debug -minimal -selinux -suid -systemd -test -unwind -xcsecurity -xephyr -xnest -xvfb)
Homepage: https://www.x.org/wiki/ https://gitlab.freedesktop.org/xorg/xserver/xorg-server
Description: X.Org X servers
λ ~/ cat .xinitrc
xsetroot -cursor_name left_ptr
exec dbus-launch /home/antonio/.xmonad/xmonad-x86_64-linux
|
Last edited by open-antux on Thu May 02, 2024 4:14 pm; edited 1 time in total |
|
| Back to top |
|
 |
GDH-gentoo
Veteran
Joined: 20 Jul 2019
Posts: 1549
Location: South America
|
| Posted: Sun Apr 28, 2024 3:32 pm Post subject: |
|
|
That's typically Xorg running with an unprivileged user, without meeting the required conditions for that. How do you start greetd?
_________________
| NeddySeagoon wrote: | I'm not a witch, I'm a retired electronics engineer  |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
|
|
| Back to top |
|
|
open-antux
n00b
Joined: 19 Dec 2022
Posts: 10
|
| Posted: Sun Apr 28, 2024 4:13 pm Post subject: |
|
|
| GDH-gentoo wrote: | | That's typically Xorg running with an unprivileged user, without meeting the required conditions for that. How do you start greetd? |
Hi GDH-gentoo, thanks for the support.
I followed the documentation here. |
|
| Back to top |
|
|
open-antux
n00b
Joined: 19 Dec 2022
Posts: 10
|
| Posted: Mon Apr 29, 2024 11:18 am Post subject: X error: Cannot open virtual console 8 (Permission denied) |
|
|
A little update, I tried to add into the tty group my normal user and greetd user, now the error message is changed but the behavior is the same.
| Code: |
λ ~/ sudo gpasswd -a greetd tty
Password:
Aggiunta dell'utente greetd al gruppo tty
λ ~/ sudo gpasswd -a antonio tty
Aggiunta dell'utente antonio al gruppo tty
|
This is the error message:
| Code: |
[ 226.280] Current Operating System: Linux gentoo 6.8.7-gentoo #1 SMP PREEMPT_DYNAMIC Thu Apr 25 08:49:19 CEST 2024 x86_64
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 226.285] (EE)
[ 226.285] (EE) xf86OpenConsole: Cannot open virtual console 8 (Permission denied)
[ 226.285] (EE)
[ 226.285] (EE)
[ 226.285] (EE) Please also check the log file at "/home/antonio/.local/share/xorg/Xorg.0.log" for additional information.
[ 226.285] (EE)
[ 226.285] (EE) Server terminated with error (1). Closing log file.
|
EDIT: Changed title with the new error message. |
|
| Back to top |
|
|
Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6103
Location: Dallas area
|
| Posted: Mon Apr 29, 2024 11:58 am Post subject: |
|
|
So you run the user as "greetd" , what permissions does he have, it's the one executing things from greetd?
_________________
PRIME x570-pro, 3700x, 6.1 zen kernel
gcc 13, profile 17.0 (custom bare multilib), openrc, wayland |
|
| Back to top |
|
|
open-antux
n00b
Joined: 19 Dec 2022
Posts: 10
|
| Posted: Mon Apr 29, 2024 12:20 pm Post subject: |
|
|
| Anon-E-moose wrote: | | So you run the user as "greetd" , what permissions does he have, it's the one executing things from greetd? |
Hi Anon-E-moose, thanks for the support.
Yes, I use greetd user for the login and the command that I execute is startx. |
|
| Back to top |
|
|
Hu
Administrator
Joined: 06 Mar 2007
Posts: 21724
|
| Posted: Mon Apr 29, 2024 2:54 pm Post subject: |
|
|
| open-antux wrote: | | A little update, I tried to add into the tty group my normal user and greetd user, now the error message is changed but the behavior is the same. |
You should not do this. On normal systems, a user does not need to be in the tty group, and membership there can be used for some types of attacks. |
|
| Back to top |
|
|
open-antux
n00b
Joined: 19 Dec 2022
Posts: 10
|
| Posted: Mon Apr 29, 2024 3:11 pm Post subject: |
|
|
| Hu wrote: | | open-antux wrote: | | A little update, I tried to add into the tty group my normal user and greetd user, now the error message is changed but the behavior is the same. |
You should not do this. On normal systems, a user does not need to be in the tty group, and membership there can be used for some types of attacks. |
Hi Hu, I see, thanks for the annotation, I'll remove those users from the tty group  |
|
| Back to top |
|
|
open-antux
n00b
Joined: 19 Dec 2022
Posts: 10
|
| Posted: Wed May 01, 2024 5:52 pm Post subject: |
|
|
Hi all,
after some research, I solved my issue. I'm thinking that the issue is startx, because if I run as command in greetd the issue doesn't appear.
Before I tag this thread as solved, I'd like to understand if this workaround (I think?) could cause me some sort of security issue.
Thanks. |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
Desktop Environments
