KDE 4.9 slowness

Some days ago, when glibc was updated in testing to finally replace /lib with a symlink to /usr/lib, I a few hours so that every problem had appeared in someone else's computer before updating mine. I (in theory) successfully completed the update and apparently everything is working without complaining. Except, since that update everything inside KDE that needs to show files in the filesystem either takes ages to start (dolphin takes up to 90 seconds to show up, and amarok launches only slightly faster) or, if not a native KDE app, like in Opera's case, the idle time happens when a "save file" dialog is summoned. The startup of the desktop (from the login screen to the plasma workspace) is also quite slow, but I can't seem to get any output for that. My ignorant guess is that, a library that was once located in /lib is now looked for somewhere else before /usr/lib, or/and chokes with symlinks. The problem: the output of dolphin in a terminal is not helpful, mainly because all KDE apps complain about something upon start and run perfectly. :
libpng warning: Unknown iTXt compression type or method
Object::connect: No such signal QDBusAbstractInterface::DeviceAdded(QString)
Object::connect: No such signal QDBusAbstractInterface::DeviceRemoved(QString)
dolphin(3898) KXMLGUI::ActionList::plug: Index 13 is not within range (0 - 9
QPixmap::scaled: Pixmap is a null pixmap
QPixmap::scaled: Pixmap is a null pixmap
The only interesting thing in the output is that it spends all the idle time (idle, because the CPU does not spike) after the libpng warning. After a while, the other errors will suddenly show up alongside the main window.
I happened to think that the sudden slowness was coincidential with some other update, but the glibc update being so important (meaning potentially dangerous) it was the first thing I looked at.

After some time, it was solved without my knowledge after today's libpng (and lib32-libpng) update from 1.5.11-2 to 1.5.12-1. Dolphin is again starting as quickly as before, as well as Amarok. I bet startup time will be fixed too.

Similar Messages

  • KDE is horribly slow

    Ahem, my fellow countrymen of fine breeding and social stature...
    Since I installed Arch Linux, KDE has been horrendously slow. It's a pain in the arse to even write this.
    I use the NVidia proprietary drivers now, I would be happy if any of you gentlemen could help me.
    Excuse me, I'm going to get a spot of tea now.

    Well, turning of Nepomuk works a bit, but it's still slow.
    I will post a htop-log here, wait.
    EDIT: The output changes all the time, but I manage to catch a process run by root that seems to use lots of power. These are the processes that has a higher CPU-value than "0.0" listed.
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      814 root       20   0  166M 74420 45428 S  3.0  0.5  4:38.56 /usr/bin/X :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-NAPCEb
    3161 icyton     20   0  663M 47084 26764 S  2.0  0.3  0:04.00 kdeinit4: konsole [kdeinit]
    1178 icyton     20   0 1039M  162M 63312 D  1.0  1.0  2:46.96 /home/icyton/Bitcoin/bin/64/bitcoin-qt -session 10d1cdddd7000133778389800000010010037_1337989234_685164
    2065 icyton     20   0  387M 43388 22924 S  1.0  0.3  0:46.60 /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja 1206 plugin
    Last edited by K0DD4Z (2012-05-26 17:05:42)

  • ATI + KDE works really slow

    yesterday a decided to install arch linux for the first time and got some problems.
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    1291 frames in 5.0 seconds = 258.007 FPS
    1309 frames in 5.0 seconds = 261.700 FPS
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    but whole problem with kde is still here.
    I try to describe it in more details
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    btw.thnx for such quick response

  • KDE slow without Oxygen

    Hi,
    I have noticed that my kde is very slow if I don't use Oxygen. Even with QtCurve the entire system is slower than before.
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    Pierre wrote:What do you mean by "slow"? QtCurve works fine for me here.
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  • KDE and fglrx module - power saving

    Hello,
    yesterday I switched from gnome to KDE 4.6 (stable) and have a problem regarding my graphics card driver:
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    Matse

    Hi,
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    matse

  • Kdemod, xorg-server 1.7.1.901-1 = slow kickof, dvb broken... [solved]

    So the recent xorg update to 1.7.1.901-1 has caused some problems for me. The kickof menu in kde was extremly slow and dvbt stoped working, kaffeine not being able to tune to any channels anymore.
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    http://bbs.archlinux.org/viewtopic.php?id=84294
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    http://wiki.archlinux.org/index.php/Dow … ges#How-To

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    For the life of me I couldn't figure out how to uninstall the proprietary drivers and it wouldn't let me install nvidia under pacman.  I had to delete every conflicting file by hand (sigh).  I finally got arch's nvidia to install,  but kde will not start at all for me.   On boot kde hangs after the first disk drive icon and then a mouse click will send the screen to black.
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  • Unable to contact KDED

    KDE is kinda bloated after upgrade to 4.6 and haven't been fixed yet.
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    Try rebooting.
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  • KDE 4.7: very slow and high disk usage

    Since upgrade to KDE 4.7 on my i686 laptop, my system behaves weirdly. I noticed a slow down caused by a very high disk usage: when the HDD spins the cpu usage reported by the CPU monitor plasmoid is very high (~ 50%), while top reports a very small CPU load. Another strange symptom is that, when I try to close the session, the system freezes for about 15 seconds before the logout/shutdown/restart dialog window appears, again with HDD spinning furiously. If I exit the dialog window and then try to close session again it works smoothly, so I think some caching is at work at second try.
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    Although I'm not having any of the issues as Snack, I have found KDE 4.7.0 to be a very horrible release. In fact, I'm sick and tired of the KDE release notes bragging about killing thousands of bugs each release, when in actuality the first few revisions of each stable release are horrible. When I first upgraded, I ran into at least four really nasty bugs. Although I've worked around some of them, it left a really sour taste in my mouth. Here is what I've experienced:
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  • KDE : slow font rendering

    Hi everyone !
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    Oh gees, it seems the culprit was the "sub-hinting" (halo de sous-pixellisation) option. I thought I had tried all possible combinations
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    Last edited by mahen (2007-02-05 11:55:09)

  • Tarantella running v. slow/unable to run KDE from webtop (all users)

    My knowledge of linux and tarantella is pretty limited, so bare with me
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    David
    "Graeme Eddie" <[email protected]> wrote in message
    news:[email protected]...
    Rob wrote:
    Graeme Eddie wrote:
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  • Kde slow

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  • [SOLVED] KDE too slow on VirtualBox

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  • Slow text rendering in KDE.

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  • Firefox 3.5 damn slow under KDE 4.2

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    I just use QTCURVE as a theme, it has a native KDE3, KDE4 and GTK theme giving a constant look all around plus it is better looking then oxygen imho (especially when set to AQUA).
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    Last edited by stefan1975 (2009-07-30 12:10:15)

  • [SOLVED] Very slow application launch in KDE

    Hi, some days ago a nasty makefile tried to delete my / directory while I was trying to compile a program. While it didin't touch anything in my system folders, it made a big mess on my home. I recovered almost everything, but since then KDE is behaving strangely. In particular, launching an application with lancelot or with the standard KDE launcher has become painfully slow. All the KDE applications are affected, but the issue is particularly annoying with firefox. Launching it from the command line, however, resolves everything. Chromium is launched quickly in any case.
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    Thanks.
    Last edited by snack (2011-03-27 13:36:58)

    Oh, you don't have to rebuild everything. Backup your configuration also, then put it back one by one and see what has gone wrong. (All those hidden files started with a dot ".").
    I did mean those files are also important data, who would want to lose all the configuration that took so long to do
    Shouldn't take too long to figure it out. If it's my configuration, I think I can find out what wrong in less than 15 minutes.
    Good luck if you choose to do so.

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