Hi,

I run Ubuntu 21.04 with KDE 5.22.5.
Computer boots quite fast but when it's about user session it's very slow once I type my user password (about 1m30), while several months ago it was about 10s.
I checked with command line "systemd-analyze" and here is the result:

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Startup finished in 3.271s (kernel) + 7.852s (userspace) = 11.124s 
graphical.target reached after 7.846s in userspace

When I run "systemd-analyze critical-chain", it returns:

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The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.

graphical.target @7.846s
└─multi-user.target @7.846s
  └─teamviewerd.service @7.766s +79ms
    └─network-online.target @7.762s
      └─NetworkManager-wait-online.service @4.362s +3.399s
        └─NetworkManager.service @4.133s +227ms
          └─dbus.service @4.130s
            └─dbus.socket @4.119s
              └─basic.target @4.119s
                └─sockets.target @4.119s
                  └─snapd.socket @4.118s +898us
                    └─sysinit.target @4.112s
                      └─systemd-timesyncd.service @4.015s +96ms
                        └─systemd-tmpfiles-setup.service @3.883s +125ms
                          └─local-fs.target @3.876s
                            └─home.mount @3.785s +90ms
                              └─dev-sdb1.device @3.784s

But times written are far from what I experience each time I log into system.

When I edited my /etc/systemd/system.conf and uncomment the following lines:

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#DefaultTimeoutStartSec=90s
#DefaultTimeoutStopSec=90s

and write:

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#DefaultTimeoutStartSec=10s
#DefaultTimeoutStopSec=10s

It seems that nothing changed.

Do you have enough free space on your home and / partition?

Yes, I still have 50 GB free on SSD /Home and more than 383 GB free on / partition

You probably run something on startup that slows down the login. A few ideas that could cause this are an attempt to load remote files, a graphic driver that can't be loaded correctly, some third-party software that slows down the login, a problem with HDMI audio loading, etc.
Make a new user and check the difference in time, if there is none then the problem is not in your user space but probably in the graphic stack

The only thing I have it's 2 monitors for game development.

Ok so after analyzing logs I discovered 3 weird messages:

first one is about pulse audio and it's notified as error:

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03/12/2021 09:17   pulseaudio   Sink 'alsa_output.pci-0000_00_1b.0.analog-stereo' does not exist.
03/12/2021 09:17   pulseaudio   Source 'alsa_input.usb-041e_Live__Cam_Connect_HD_1080_VF0760-02.analog-stereo' does not exist.

and the next one is about missing data miner (error):

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03/12/2021 09:14   systemd   Failed to start Tracker file system data miner.

i did a reset of tracker typing:

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tracker reset -e

regarding pulseaudio, when I type: pactl list sinks | grep "Name:"
I only have 1 sink:

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Name: alsa_output.pci-0000_00_1b.0.analog-stereo

But I'm sure that my slow issue (3 minutes from login to taskbar display) is due to my profile as I have a test profile and it starts (from login to taskbar display) in less than 11s.

I installed driver NVidia delivered by ubuntu v470 instead of propiertary 460 and now my computer is faster by 1 minute, so I still have a 2 minutes time gap between login and taskbar display.

Is the test profile new or has it been used before? An entirely new user is the best way to check if the problem is in user space.

FWIW: lack of space on the / and /home partitions can also result in slow startups

Test profile is new...I just created it this morning.
It is just a simple user profile created and to be able to log in.

So just by log in into system it takes less than 11s while on my personal profile it takes 2-3min.
As I wrote previously, on / partition there is almost 383Gb free and on /home partition (different HDD) there is more than 50 Gb free, so I do not think this is the issue, as it would also be present on different user profile.

I'm not satisfied how KsystemLog app display issues (errors and warning) as filter is not working well and color are not respected....

Even if i reset data miner/tracker I still have error in log with it:

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Failed to start Tracker file system data miner.

Just for fun I decided to upgrade to Kubuntu 21.10 and so far nothing has changed.

Today I decided to try to remove the tracker to check if it has some effect on that time desktop needs to display fully itself.

so I typed:

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sudo apt remove tracker tracker-extract tracker-miner-fs

and I rebooted.

So I checked several times by restarting computer and Ubuntu now needs 30-40 s to fully display KDE desktop. So for an unknow reason tracker slow my computer. Maybe it would be great to postpond the start of such service to 5min after login, as some GNOME app do not work without such service.

If you are on a KDE desktop, why would you be running a Gnome-specific file indexer, anyway?
Maybe turn of KDE's search indexer, and see if it helps? Multiple redundant indexing services might contribute to the slow desktop loading. Though of course you lose the search features in Dolphin.

Maybe check what Tracker is set to index, maybe reducing the number of locations?
Tracker is not designed to index directories of source code or video game data. If content like this appears in the locations it is configured to index then you might see unwanted high resource usage.

In any case, configuring the startup for Gnome's tracker is unrelated to KDE, or Kubuntu.

I did not install Gnome indexer, it seems that some Gnome app install it as part of them.
I already for 1 year now, do not have KDE search indexer activated. I checked and it is disabled still, so no problem from this side.
Disable Tracker was 1 point of my issue.

claydoh wrote:If you are on a KDE desktop, why would you be running a Gnome-specific file indexer, anyway?
Maybe turn of KDE's search indexer, and see if it helps? Multiple redundant indexing services might contribute to the slow desktop loading. Though of course you lose the search features in Dolphin.

Maybe check what Tracker is set to index, maybe reducing the number of locations?
Tracker is not designed to index directories of source code or video game data. If content like this appears in the locations it is configured to index then you might see unwanted high resource usage.

In any case, configuring the startup for Gnome's tracker is unrelated to KDE, or Kubuntu.

Today, I checked my logs after disabling autoFS and I noticed that some services take too much time to execute (from my point of view).

Here is a log extract:

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déc. 06 09:23:42 PC0001 systemd[1800]: Starting Evolution address book service...
déc. 06 09:23:42 PC0001 dbus-daemon[1814]: [session uid=1000 pid=1814] Successfully activated service 'org.gnome.evolution.dataserver.AddressBook10'
déc. 06 09:23:42 PC0001 systemd[1800]: Started Evolution address book service.

déc. 06 09:23:47 PC0001 NetworkManager[1289]: <info>  [1638779027.3439] manager: NetworkManager state is now CONNECTED_GLOBAL
déc. 06 09:23:47 PC0001 dbus-daemon[1288]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.11' (uid=0 pid=1289 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
déc. 06 09:23:47 PC0001 whoopsie[1677]: [09:23:47] The default IPv4 route is: /org/freedesktop/NetworkManager/ActiveConnection/1
déc. 06 09:23:47 PC0001 systemd[1]: Starting Network Manager Script Dispatcher Service...
déc. 06 09:23:47 PC0001 whoopsie[1677]: [09:23:47] Not a paid data plan: /org/freedesktop/NetworkManager/ActiveConnection/1
déc. 06 09:23:47 PC0001 whoopsie[1677]: [09:23:47] Found usable connection: /org/freedesktop/NetworkManager/ActiveConnection/1
déc. 06 09:23:47 PC0001 dbus-daemon[1288]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
déc. 06 09:23:47 PC0001 systemd[1]: Started Network Manager Script Dispatcher Service.
déc. 06 09:23:48 PC0001 whoopsie[1677]: [09:23:48] online

déc. 06 09:23:57 PC0001 systemd[1]: NetworkManager-dispatcher.service: Deactivated successfully.
déc. 06 09:23:59 PC0001 PackageKit[2110]: get-updates transaction /2381_badbaace from uid 1000 finished with success after 464ms

déc. 06 09:24:20 PC0001 systemd[1800]: Starting Sound Service...
déc. 06 09:24:20 PC0001 systemd[1]: Starting Discard unused blocks on filesystems from /etc/fstab...

I would like to understand why there is a so huge gap between 2 line of logs.

Here the gap is 5s:

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déc. 06 09:23:42 PC0001 systemd[1800]: Started Evolution address book service.

déc. 06 09:23:47 PC0001 NetworkManager[1289]: <info>  [1638779027.3439] manager: NetworkManager state is now CONNECTED_GLOBAL

Here the gap is 9s:

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déc. 06 09:23:48 PC0001 whoopsie[1677]: [09:23:48] online

déc. 06 09:23:57 PC0001 systemd[1]: NetworkManager-dispatcher.service: Deactivated successfully.

Am I too much demanding or is it normal such gap ?

I have stomach feeling that NetworkManager is not working so great under the latest update.

thx