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#1 2026-04-16 09:19:26

LichHunter
Member
Registered: 2026-02-20
Posts: 8

[Solved]Session crashes after login, booted back to sddm

So I have been using arch on my gigabyte laptop, running an nvidia 4060 and an intel cpu, everytime after I log in, it works for about 2 minutes and then boots me back to the sddm login screen. Curious enough when I try to change to tty, the login screen dissapears and I'm back inside KDE where I left off,

I use SDDM with KDE. Nvidia Graphics and Intel cpu with iGPU.

Here are my recent boot logs

https://termbin.com/2w3v

Any help is appreciated.

Last edited by LichHunter (2026-05-08 08:55:03)

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#2 2026-04-16 13:08:09

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,548

Re: [Solved]Session crashes after login, booted back to sddm

Apr 16 10:13:31 KHALED-BM sudo[4161]:   khaled : TTY=pts/1 ; PWD=/home/khaled ; USER=root ; COMMAND=/usr/bin/journalctl -e
sudo journalctl -b

after the session failed, you can 

sudo journalctl -b | curl -s -H "Accept: application/json, */*" --upload-file - 'https://paste.c-net.org/'

Edit: there's somehow a 90s session

Apr 16 10:11:42 KHALED-BM (systemd)[1029]: pam_unix(systemd-user:session): session opened for user khaled(uid=1000) by khaled(uid=0)
Apr 16 10:11:42 KHALED-BM systemd[1]: Started Session 2 of User khaled.
Apr 16 10:13:12 KHALED-BM sddm-helper[1023]: pam_unix(sddm:session): session closed for user khaled

seems dbus related.

echo $DBUS_SESSION_BUS_ADDRESS

Last edited by seth (2026-04-16 13:15:09)

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#3 2026-04-17 08:42:02

LichHunter
Member
Registered: 2026-02-20
Posts: 8

Re: [Solved]Session crashes after login, booted back to sddm

I did an update today, and so far I've rebooted the pc a few times and the error hasn't happened yet, but I'm still observing it, for the Dbus command:

echo $DBUS_SESSION_BUS_ADDRESS
unix:path=/run/user/1000/bus
seth wrote:

Edit: there's somehow a 90s session

Also, what does this mean

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#4 2026-04-17 12:35:20

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,548

Re: [Solved]Session crashes after login, booted back to sddm

There was a session that ran for ~90s (suspiciously the default systemd service timeout)

the error hasn't happened yet, but I'm still observing it

Errr? Hein?
The dbus address is fine, unless the problem still manifests and please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

You can remove the tag and bump the thread w/ a new journal if and when this happens again.

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#5 2026-05-07 08:53:52

LichHunter
Member
Registered: 2026-02-20
Posts: 8

Re: [Solved]Session crashes after login, booted back to sddm

So the problem occurred again with this boot, and here are the boot logs

https://termbin.com/wgl9

I hope anyone can help me with this, it's been been really weird, since the nvidia-open change. Thanks in advance.

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#6 2026-05-07 13:29:44

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,548

Re: [Solved]Session crashes after login, booted back to sddm

COMMAND=/usr/bin/journalctl -e

sudo journalctl -b
???…
May 07 09:06:16 KHALED-BM sddm-helper-start-x11user[985]: " UnloadModule: \"libinput\"\n(II) systemd-logind: releasing fd for 13:68\n"
…
May 07 09:07:44 KHALED-BM sddm-helper[1050]: [PAM] Closing session
May 07 09:07:44 KHALED-BM sddm-helper[1050]: pam_unix(sddm:session): session closed for user khaled

Looks again like a session ran for ~90s

May 07 09:06:56 KHALED-BM systemd[1056]: Started Portal service (GTK/GNOME implementation).
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
May 07 09:06:56 KHALED-BM systemd[1056]: Starting Xdg Desktop Portal For KDE...
May 07 09:06:57 KHALED-BM systemd[1056]: Started Xdg Desktop Portal For KDE.
May 07 09:06:57 KHALED-BM systemd[1056]: Started Portal service.
May 07 09:06:57 KHALED-BM kwin_wayland[1218]: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: Unable to open /proc/1218/root")
pacman -Qikk xdg-desktop-portal-kde

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#7 2026-05-07 13:37:07

LichHunter
Member
Registered: 2026-02-20
Posts: 8

Re: [Solved]Session crashes after login, booted back to sddm

Is there any way to fix it? It's been random, it either works or not, depending on it's mood. 

pacman -Qikk xdg-desktop-portal-kde
Name            : xdg-desktop-portal-kde
Version         : 6.6.4-1
Description     : A backend implementation for xdg-desktop-portal using Qt/KF5
Architecture    : x86_64
URL             : https://kde.org/plasma-desktop/
Licenses        : LGPL-2.0-or-later
Groups          : plasma
Provides        : xdg-desktop-portal-impl
Depends On      : gcc-libs  glibc  kconfig  kcoreaddons  kcrash  kglobalaccel  kguiaddons  kiconthemes  ki18n  kio  kio-fuse  kirigami  kirigami-addons  kitemviews  knotifications  kpipewire  kservice
                  kstatusnotifieritem  kwayland  kwindowsystem  libxkbcommon  plasma-workspace  qt6-base  qt6-declarative  wayland  xdg-desktop-portal
Optional Deps   : None
Required By     : plasma-integration
Optional For    : xdg-desktop-portal
Conflicts With  : None
Replaces        : None
Installed Size  : 2.40 MiB
Packager        : Antonio Rojas <arojas@archlinux.org>
Build Date      : Tue Apr 7 14:29:08 2026
Install Date    : Fri Apr 10 11:33:24 2026
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : Signature

xdg-desktop-portal-kde: 182 total files, 0 altered files

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#8 2026-05-07 13:44:12

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,548

Re: [Solved]Session crashes after login, booted back to sddm

First and foremost it would be helpful to see the entire journal - the beginning of your session is missing.
The next main question would be why xdg-desktop-portal-g* is
a) kicking in
b) installed

Can you "sudo pacman -Rs xdg-desktop-portal-gtk xdg-desktop-portal-gnome"?

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#9 2026-05-07 14:01:09

LichHunter
Member
Registered: 2026-02-20
Posts: 8

Re: [Solved]Session crashes after login, booted back to sddm

for xdg-desktop-portal-g

sudo pacman -Rs xdg-desktop-portal-gtk
[sudo] password for khaled: 
checking dependencies...
error: failed to prepare transaction (could not satisfy dependencies)
:: removing xdg-desktop-portal-gtk breaks dependency 'xdg-desktop-portal-gtk' required by gtk4
:: removing xdg-desktop-portal-gtk breaks dependency 'xdg-desktop-portal-gtk' required by kde-gtk-config
 ✘  ~  sudo pacman -Rs xdg-desktop-portal-gtk xdg-desktop-portal-gnome
error: target not found: xdg-desktop-portal-gnome

This here is my boot journal

https://termbin.com/spc2

I've rebooted the pc over a dozen times now and it didn't display the same behavior.
I'm pretty much puzzled over what's going on.

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#10 2026-05-07 14:26:44

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,548

Re: [Solved]Session crashes after login, booted back to sddm

May 07 14:57:40 KHALED-BM systemd[977]: Starting Portal service...
May 07 14:57:40 KHALED-BM systemd[977]: Starting flatpak document portal service...
May 07 14:57:40 KHALED-BM systemd[977]: Started flatpak document portal service.
May 07 14:57:40 KHALED-BM /usr/lib/xdg-desktop-portal[1095]: Choosing gtk.portal for org.freedesktop.impl.portal.Lockdown as a last-resort fallback
May 07 14:57:45 KHALED-BM systemd[977]: Starting Portal service (GTK/GNOME implementation)...
May 07 14:57:45 KHALED-BM systemd[977]: Started Portal service (GTK/GNOME implementation).
May 07 14:57:45 KHALED-BM systemd[977]: Starting Xdg Desktop Portal For KDE...
May 07 14:57:46 KHALED-BM systemd[977]: Started Xdg Desktop Portal For KDE.
May 07 14:57:46 KHALED-BM systemd[977]: Started Portal service.
May 07 14:57:46 KHALED-BM kwin_wayland[1088]: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: Unable to open /proc/1088/root")
May 07 14:57:46 KHALED-BM ksmserver[1274]: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: App info not found for 'org.kde.ksmserver'")
May 07 14:57:46 KHALED-BM gmenudbusmenuproxy[1352]: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: App info not found for 'org.kde.gmenudbusmenuproxy'")
…
May 07 14:57:55 KHALED-BM kitty[1686]: [4.488] [glfw error 65544]: Notify: Failed to get server capabilities error: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

Something's fishy about the session service nevertheless.

ps aux | grep dbus
qdbus6

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#11 2026-05-07 14:29:11

LichHunter
Member
Registered: 2026-02-20
Posts: 8

Re: [Solved]Session crashes after login, booted back to sddm

ps aux | grep dbus
dbus         753  0.0  0.0   9012  6628 ?        Ss   14:57   0:00 /usr/bin/dbus-broker-launch --scope system --audit
dbus         759  0.0  0.0   6716  4828 ?        S    14:57   0:00 dbus-broker --log 10 --controller 9 --machine-id 4c95f3c73cff44f389d972babf33bba2 --max-bytes 536870912 --max-fds 4096 --max-matches 131072 --audit
root         971  0.0  0.1  86492 24468 ?        S    14:57   0:00 /usr/lib/sddm/sddm-helper --socket /tmp/sddm-auth-5c9de1c0-5cf3-48b3-9690-a95ce1845585 --id 3 --start /usr/lib/plasma-dbus-run-session-if-needed /usr/bin/startplasma-wayland --user khaled
khaled      1071  0.0  0.0   8452  6076 ?        Ss   14:57   0:00 /usr/bin/dbus-broker-launch --scope user
khaled      1072  0.0  0.0   6436  4604 ?        S    14:57   0:00 dbus-broker --log 11 --controller 10 --machine-id 4c95f3c73cff44f389d972babf33bba2 --max-bytes 100000000000000 --max-fds 25000000000000 --max-matches 5000000000
khaled      1266  0.0  0.0   8452  5988 ?        S    14:57   0:00 /usr/bin/dbus-broker-launch --config-file=/usr/share/defaults/at-spi2/accessibility.conf --scope user
khaled      1272  0.0  0.0   4604  2780 ?        S    14:57   0:00 dbus-broker --log 10 --controller 9 --machine-id 4c95f3c73cff44f389d972babf33bba2 --max-bytes 100000000000000 --max-fds 6400000 --max-matches 5000000000
khaled      1352  0.0  0.1 229792 27452 ?        Ssl  14:57   0:00 /usr/bin/gmenudbusmenuproxy
khaled      1541  0.0  0.0   7768  5568 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c30.w88 luisbocanegra.panel.colorizer.c30.w88 preset preset_changed
khaled      1542  0.0  0.0   7768  5576 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c30.w88 luisbocanegra.panel.colorizer.c30.w88 preset property_changed
khaled      1546  0.0  0.0 169460  8492 ?        Sl   14:57   0:00 gdbus monitor --session --dest luisbocanegra.panel.colorizer.c30.w88
khaled      1547  0.0  0.0 169460  8440 ?        Sl   14:57   0:00 gdbus monitor --session --dest luisbocanegra.panel.colorizer.c30.w88
khaled      1550  0.0  0.0   7768  4188 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c30.w88 luisbocanegra.panel.colorizer.c30.w88 preset property_changed
khaled      1551  0.0  0.0   7768  4180 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c30.w88 luisbocanegra.panel.colorizer.c30.w88 preset preset_changed
khaled      1573  0.0  0.0   7768  5496 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c61.w89 luisbocanegra.panel.colorizer.c61.w89 preset preset_changed
khaled      1575  0.0  0.0 169460  8440 ?        Sl   14:57   0:00 gdbus monitor --session --dest luisbocanegra.panel.colorizer.c61.w89
khaled      1577  0.0  0.0   7768  4112 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c61.w89 luisbocanegra.panel.colorizer.c61.w89 preset preset_changed
khaled      1582  0.0  0.0   7768  5508 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c61.w89 luisbocanegra.panel.colorizer.c61.w89 preset property_changed
khaled      1585  0.0  0.0 169460  8448 ?        Sl   14:57   0:00 gdbus monitor --session --dest luisbocanegra.panel.colorizer.c61.w89
khaled      1587  0.0  0.0   7768  4112 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c61.w89 luisbocanegra.panel.colorizer.c61.w89 preset property_changed
khaled      1593  0.0  0.0   7768  5476 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c96.w98 luisbocanegra.panel.colorizer.c96.w98 preset preset_changed
khaled      1594  0.0  0.0   7768  5560 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c96.w98 luisbocanegra.panel.colorizer.c96.w98 preset property_changed
khaled      1598  0.0  0.0 169460  8436 ?        Sl   14:57   0:00 gdbus monitor --session --dest luisbocanegra.panel.colorizer.c96.w98
khaled      1599  0.0  0.0 169460  8488 ?        Sl   14:57   0:00 gdbus monitor --session --dest luisbocanegra.panel.colorizer.c96.w98
khaled      1602  0.0  0.0   7768  4184 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c96.w98 luisbocanegra.panel.colorizer.c96.w98 preset property_changed
khaled      1603  0.0  0.0   7768  4180 ?        S    14:57   0:00 bash /home/khaled/.local/share/plasma/plasmoids/luisbocanegra.panel.colorizer/contents/ui/tools/gdbus_get_signal.sh session luisbocanegra.panel.colorizer.c96.w98 luisbocanegra.panel.colorizer.c96.w98 preset preset_changed
khaled     18586  0.0  0.0   6680  4220 pts/1    S+   15:27   0:00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn --exclude-dir=.idea --exclude-dir=.tox --exclude-dir=.venv --exclude-dir=venv dbus
qdbus6
:1.0
:1.1
 org.freedesktop.systemd1
:1.10
 org.freedesktop.portal.Documents
:1.11
 org.freedesktop.ScreenSaver
 org.freedesktop.a11y.Manager
 org.kde.KWin
 org.kde.KWin.Effect.WindowView1
 org.kde.KWin.HighlightWindow
 org.kde.KWin.NightLight
 org.kde.KWin.ScreenShot2
 org.kde.keyboard
 org.kde.kglobalaccel
 org.kde.screensaver
 org.kde.touchpad
:1.13
:1.14
:1.16
 org.freedesktop.ReserveDevice1.Audio0
 org.freedesktop.ReserveDevice1.Audio1
 org.freedesktop.ReserveDevice1.Audio2
:1.17
 org.pipewire.Telephony
:1.2
:1.20
 org.a11y.Bus
:1.21
:1.22
 org.gtk.Settings
 org.kde.GtkConfig
 org.kde.StatusNotifierWatcher
 org.kde.Wacom
 org.kde.kappmenu
 org.kde.kded6
 org.kde.plasmanetworkmanagement
 org.kde.plasmashell.accentColor
:1.23
 org.freedesktop.impl.portal.desktop.kwallet
 org.freedesktop.secrets
 org.kde.ksecretd
 org.kde.secretservicecompat
:1.24
 org.kde.ksmserver
:1.26
:1.27
:1.28
:1.29
 ca.desrt.dconf
:1.30
 com.canonical.Unity
 org.freedesktop.Notifications
 org.kde.JobViewServer
 org.kde.StatusNotifierHost-1290
 org.kde.klipper
 org.kde.kuiserver
 org.kde.plasmashell
:1.31
 org.kde.plasma.browser.integration
:1.32
 org.kde.ActivityManager
 org.kde.runners.activities
:1.34
 org.kde.gmenudbusmenuproxy
:1.35
 org.kde.xembedsniproxy
:1.36
 org.pulseaudio.Server
:1.37
 org.kde.kaccess
:1.38
 org.kde.polkit-kde-authentication-agent-1
:1.39
 org.freedesktop.PowerManagement
 org.freedesktop.PowerManagement.Inhibit
 org.kde.ScreenBrightness
 org.kde.Solid.PowerManagement
 org.kde.Solid.PowerManagement.PolicyAgent
 org.kde.org_kde_powerdevil
:1.4
 org.kde.KWinWrapper
:1.41
 org.kde.kwalletd
 org.kde.kwalletd5
 org.kde.kwalletd6
:1.42
:1.43
:1.47
 org.kde.discover.notifier
:1.49
 org.freedesktop.impl.portal.desktop.gtk
:1.50
:1.51
 org.freedesktop.impl.portal.desktop.kde
:1.52
:1.53
:1.55
 org.freedesktop.background.Monitor
:1.57
:1.58
:1.59
 luisbocanegra.panel.colorizer.c30.w88
:1.6
 org.kde.baloo
:1.60
 luisbocanegra.panel.colorizer.c61.w89
:1.61
:1.62
:1.63
 luisbocanegra.panel.colorizer.c96.w98
:1.68
 org.mozilla.firefox_developer_edition.L2hvbWUva2hhbGVkLy5tb3ppbGxhL2ZpcmVmb3gvMDF5ZTl0YzguZGV2LWVkaXRpb24tZGVmYXVsdA__
 org.mpris.MediaPlayer2.firefox.instance_1_68
:1.69
 org.mozilla.firefox.L2hvbWUva2hhbGVkLy5tb3ppbGxhL2ZpcmVmb3gvc3BqNDZybnUuZGVmYXVsdC1yZWxlYXNl
:1.7
 org.freedesktop.portal.Desktop
:1.70
:1.71
:1.72
:1.73
:1.78
 org.kde.plasma.browser_integration
 org.mpris.MediaPlayer2.plasma-browser-integration
:1.79
 org.kde.plasma.browser_integration-3095
:1.9
 org.freedesktop.impl.portal.PermissionStore
:1.93
org.freedesktop.DBus

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#12 2026-05-07 14:40:47

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,548

Re: [Solved]Session crashes after login, booted back to sddm

Session bus is there, get rid of whatever "luisbocanegra.panel.colorizer" is and see whether the problem remains.

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

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#13 2026-05-07 14:44:18

LichHunter
Member
Registered: 2026-02-20
Posts: 8

Re: [Solved]Session crashes after login, booted back to sddm

Thanks for all the help! I went to the github page after you mentioned that, and there is a small bit about system updates:

The C++ plugin may stop working or cause Plasma to crash after a system update (#209) and will need to be rebuilt, see Build from source (With C++ Plugin).

https://github.com/luisbocanegra/plasma-panel-colorizer
It's an extension to customize plasma dock.

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