Plasma startup very slow after update

Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

I updated my system yesterday and now the startup of plasma has become very slow.
It takes more than 40 seconds between the login in SDDM and a fully loaded KDE
environment. Before, it was like 5 seconds (SSD drive). Same problem with a new
user with minimal configuration. However, after a logout, a new login is really fast.

Anybody with the same problem?

I haven't found anything in the log files I can relate to this behavior. Any help is appreciated.

Spacebug

Here is my xorg-session.log:

Keruskerfuerst · Posted: Thu Aug 16, 2018 2:30 pm Post subject:

How many MB for KDE start is loaded into RAM ?

fedeliallalinea · Posted: Thu Aug 16, 2018 3:02 pm Post subject:

Probably related to this bug.
After downloading haveged package and add it to default runlevel, sddm work again fast
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Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

fedeliallalinea · Posted: Thu Aug 16, 2018 3:21 pm Post subject:

You tried with a new user to see if the problem are configuration file in home directory?
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Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

Tolstoi · l33t Joined: 20 May 2004 Posts: 678

Got the same problem here.

Fitzcarraldo · Posted: Thu Aug 16, 2018 5:08 pm Post subject:

I don't think the longer delay for the Plasma Desktop to appear is due to SDDM, because I have noticed a longer delay after I login via LightDM on my Clevo W230SS laptop running Gentoo Stable. I have not yet looked into it, but a longer delay was immediately noticeable. I have also just updated my Compal NBLB2 laptop, running Gentoo Testing and SDDM rather than LightDM, but have not yet rebooted, so I'll check that soon to see if there is also a noticeable increase in the time for the Plasma Desktop to appear after logging in.
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Keruskerfuerst · Posted: Thu Aug 16, 2018 5:23 pm Post subject:

How many MB for KDE start is loaded into RAM ?

I don't know exactly what you mean by that. How do I check it?

How many program code (measured in Mega Byte) is loaded into RAM?

Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

The slow startup of KDE is a problem on my laptop with SSD drive. I have now updated my
desktop computer so that ts runs the same version of everything as my laptop.
Interestingly, my desktop does not seem to slow down when loading KDE. Of course, with a
HDD it was always much slower to begin with, but now it is actually a bit faster.

What happened in the last update to make my laptop with SSD so slow starting KDE?

Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

Another observation: When I first log in, the splash screen doesn't appear (and it takes forever).
If I afterwards log out, a subsequent login is fast and the splash screen does appear!

I tried to disable the splash screen, but that didn't solve the problem with long initial startup time.

Hu · Moderator Joined: 06 Mar 2007 Posts: 21624

What did you change in the update that introduced the problem? What packages were updated to new versions? Were any packages reconfigured? What kernel version were you using when it was fast? What kernel version are you using now that it is slow?

Tolstoi · l33t Joined: 20 May 2004 Posts: 678

I don't want to switch to Gnome

saderror256 · Posted: Sun Aug 19, 2018 2:10 am Post subject:

have you tried something other than sddm, ive had many issues and sddm is commonly the cause

EDIT: or, it might be a bug, by looking at it, the best option if its possible is just roll back temporarily, better cross your fingers and hope its in your cache :lol:

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Tolstoi · l33t Joined: 20 May 2004 Posts: 678

Trying LXDM - same problem. So it is probably not related to SDDM.

Tolstoi · l33t Joined: 20 May 2004 Posts: 678

Lightdm works normally bur I just can't get it to autologin properly.

Tolstoi · l33t Joined: 20 May 2004 Posts: 678

Got the Lightdm autologin working now. But exprerienced a slow Plasma start up again.

Installing sys-apps/haveged like recommended in this thread helped.

https://forums.gentoo.org/viewtopic-t-1083242-highlight-autologin.html?sid=28f55a3340448d35c5352d2e983d2801

Everything back to normal now. Perhaps that is a solution for SDDM as well.

Tolstoi · l33t Joined: 20 May 2004 Posts: 678

Works fine for SDDM too.

Spacebug · n00b Joined: 04 Jan 2009 Posts: 18 Location: Germany

The problem is gone

Sorry to say, I have no idea why. I booted the computer after being away for a week, and now
everything works. No delay anymore.

I did at some point install haveged. Although it didn't help immediately, I can think of no other reason
what could have solved the problem.

From my side, I consider the problem solved.

Thanks everyone!

Tolstoi · l33t Joined: 20 May 2004 Posts: 678

I didn't have haveged installed and I added it to the boot runlevel as the other post suggests. Then everything went on fine.

archenroot · Posted: Wed Jan 23, 2019 5:21 am Post subject:

Thanks I found this thread :-)

, facing same issue from October, but used to take coffee every morning during plasma desktop startup (autologin) with SDDM.

Just to describe my observations:
1. SDDM looks as autolog super fast
2. Then for some seconds pure black screen appears
3. For some other period of time plasma loading indicator (white circle circulating) appears

2 and 3 taking around 1-2 minutes....

Going to test installation of haveged.

I am not sure if SDDM requires entropy as LightDM, but this is interesting:
http://lists-archives.com/debian-user/3720747-lightdm-testing-long-waiting-time-after-login.html
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archenroot · Posted: Wed Jan 23, 2019 10:53 am Post subject:

In my case installation of new package haveged and put to autostart didn't solved the issue.
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asturm · Developer Joined: 05 Apr 2007 Posts: 8935

If sddm starts up fast, then any entropy related issue is off the table. This delay sounds more like a timeout (like dbus).