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#1 2020-01-08 14:42:51

fraret
Member
Registered: 2016-12-29
Posts: 2

[SOLVED] Some applications lagging in KDE plasma

I updated my system and since then, certain applications have started to lag when interacting with them. Those apps remain frozen for a few seconds after an input action, be it clicking or typing.
Among the applications affected there seems to be all KDE project ones. Libreoffice lags if launched normally, but if SAL_USE_VCLPLUGIN=gtk3 is set when launching it, it behaves normally. GNOME apps such as gedit run normally whereas kate lags. Running the same applications in Budgie instead of plasma causes no issues.  I have discovered that changing the active window from the frozen one to any other one unfreezes it instantly.

I erased the whole .cache and .local directories without any results. Using both top and the ksysguard I can't find any CPU or I/O spikes that correlate to the lag. journalctl does not show any error when an app is frozen.

The pacman.log for the update that caused this issue is:

[2020-01-05T23:26:20+0100] [PACMAN] Running 'pacman -S -y -u --config /etc/pacman.conf --'
[2020-01-05T23:26:20+0100] [PACMAN] synchronizing package lists
[2020-01-05T23:26:25+0100] [PACMAN] starting full system upgrade
[2020-01-05T23:33:21+0100] [ALPM] running '60-mkinitcpio-remove.hook'...
[2020-01-05T23:33:21+0100] [ALPM] transaction started
[2020-01-05T23:33:21+0100] [ALPM] upgraded iana-etc (20191212-1 -> 20191231-1)
[2020-01-05T23:33:21+0100] [ALPM] upgraded expat (2.2.9-2 -> 2.2.9-3)
[2020-01-05T23:33:21+0100] [ALPM] upgraded libarchive (3.4.0-3 -> 3.4.1-1)
[2020-01-05T23:33:21+0100] [ALPM] upgraded libtirpc (1.1.4-2 -> 1.2.5-1)
[2020-01-05T23:33:21+0100] [ALPM] upgraded device-mapper (2.02.186-4 -> 2.02.186-5)
[2020-01-05T23:33:22+0100] [ALPM] upgraded linux (5.4.6.arch1-1 -> 5.4.8.arch1-1)
[2020-01-05T23:33:22+0100] [ALPM] upgraded acpi_call (1.1.0-268 -> 1.1.0-272)
[2020-01-05T23:33:22+0100] [ALPM] upgraded libjpeg-turbo (2.0.3-1 -> 2.0.4-1)
[2020-01-05T23:33:22+0100] [ALPM] upgraded xorg-server-common (1.20.6-2 -> 1.20.6-3)
[2020-01-05T23:33:22+0100] [ALPM] upgraded xorg-server (1.20.6-2 -> 1.20.6-3)
[2020-01-05T23:33:22+0100] [ALPM] upgraded nvidia-utils (440.44-1 -> 440.44-2)
[2020-01-05T23:33:22+0100] [ALPM-SCRIPTLET] If you run into trouble with CUDA not being available, run nvidia-modprobe first.
[2020-01-05T23:33:22+0100] [ALPM] upgraded libedit (20191025_3.1-1 -> 20191211_3.1-1)
[2020-01-05T23:33:23+0100] [ALPM] upgraded llvm-libs (9.0.0-4 -> 9.0.1-1)
[2020-01-05T23:33:23+0100] [ALPM] upgraded lvm2 (2.02.186-4 -> 2.02.186-5)
[2020-01-05T23:33:26+0100] [ALPM] upgraded python (3.8.0-1 -> 3.8.1-1)
[2020-01-05T23:33:26+0100] [ALPM] upgraded libakonadi (19.12.0-2 -> 19.12.0-3)
[2020-01-05T23:33:26+0100] [ALPM] upgraded akonadi (19.12.0-2 -> 19.12.0-3)
[2020-01-05T23:33:26+0100] [ALPM] upgraded archlinux-appstream-data (20191128-1 -> 20200103-1)
[2020-01-05T23:33:26+0100] [ALPM] upgraded bbswitch (0.8-273 -> 0.8-277)
[2020-01-05T23:33:26+0100] [ALPM] upgraded bind-tools (9.14.8-4 -> 9.14.9-1)
[2020-01-05T23:33:26+0100] [ALPM] upgraded blosc (1.17.0-1 -> 1.17.1-1)
[2020-01-05T23:33:26+0100] [ALPM] upgraded bluez (5.52-1 -> 5.52-2)
[2020-01-05T23:33:26+0100] [ALPM] upgraded bluez-libs (5.52-1 -> 5.52-2)
[2020-01-05T23:33:26+0100] [ALPM] upgraded bluez-utils (5.52-1 -> 5.52-2)
[2020-01-05T23:33:27+0100] [ALPM] upgraded calibre-common (4.6.0-2 -> 4.8.0-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded python2-beautifulsoup4 (4.8.1-1 -> 4.8.2-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded python2-mechanize (1:0.4.4-2 -> 1:0.4.5-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded libevent (2.1.11-3 -> 2.1.11-4)
[2020-01-05T23:33:27+0100] [ALPM] upgraded re2 (20191201-1 -> 20200101-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded libva (2.5.0-1 -> 2.6.0-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded vulkan-icd-loader (1.1.129-1 -> 1.1.130-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded python2-pyqtwebengine (5.14.0-1 -> 5.14.0-3)
[2020-01-05T23:33:27+0100] [ALPM] upgraded python2-regex (2019.08.19-3 -> 2019.12.20-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded python2-pyparsing (2.4.5-1 -> 2.4.6-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded calibre (4.6.0-2 -> 4.8.0-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded cantarell-fonts (1:0.111-1 -> 1:0.200-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded talloc (2.3.0-1 -> 2.3.1-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded cifs-utils (6.9-1 -> 6.10-1)
[2020-01-05T23:33:27+0100] [ALPM] upgraded compiler-rt (9.0.0-2 -> 9.0.1-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded clang (9.0.0-3 -> 9.0.1-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded imagemagick (7.0.9.10-1 -> 7.0.9.14-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded cups-filters (1.26.0-1 -> 1.26.1-1)
[2020-01-05T23:33:28+0100] [ALPM] installed openmp (9.0.1-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded glib-networking (2.62.2-1 -> 2.62.3-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded darktable (2:2.6.3-1 -> 2:3.0.0-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded dhcpcd (8.1.2-1 -> 8.1.4-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded doxygen (1.8.16-2 -> 1.8.17-1)
[2020-01-05T23:33:28+0100] [ALPM] upgraded libfilezilla (0.18.2-1 -> 0.19.3-1)
[2020-01-05T23:33:29+0100] [ALPM] upgraded filezilla (3.45.1-1 -> 3.46.3-1)
[2020-01-05T23:33:29+0100] [ALPM] upgraded git (2.24.1-2 -> 2.24.1-4)
[2020-01-05T23:33:29+0100] [ALPM] upgraded groff (1.22.4-2 -> 1.22.4-3)
[2020-01-05T23:33:29+0100] [ALPM] upgraded gssdp (1.2.1-1 -> 1.2.2-1)
[2020-01-05T23:33:29+0100] [ALPM] upgraded gupnp (1.2.1-1 -> 1.2.2-1)
[2020-01-05T23:33:29+0100] [ALPM] upgraded python-parso (0.5.1-3 -> 0.5.2-1)
[2020-01-05T23:33:29+0100] [ALPM] upgraded python-pyparsing (2.4.5-1 -> 2.4.6-1)
[2020-01-05T23:33:29+0100] [ALPM] upgraded ipython (7.10.2-1 -> 7.11.1-1)
[2020-01-05T23:33:29+0100] [ALPM] upgraded kdevelop (5.4.5-1 -> 5.4.5-2)
[2020-01-05T23:33:29+0100] [ALPM] upgraded plasma-framework (5.65.0-3 -> 5.65.0-4)
[2020-01-05T23:33:30+0100] [ALPM] upgraded kwin (5.17.4-3 -> 5.17.4-4)
[2020-01-05T23:33:30+0100] [ALPM] upgraded lib32-libjpeg-turbo (2.0.3-1 -> 2.0.4-1)
[2020-01-05T23:33:31+0100] [ALPM] upgraded lib32-llvm-libs (9.0.0-1 -> 9.0.1-1)
[2020-01-05T23:33:31+0100] [ALPM] upgraded lib32-vulkan-icd-loader (1.1.129-1 -> 1.1.130-1)
[2020-01-05T23:33:31+0100] [ALPM] upgraded libdnet (1.12-11 -> 1.12-12)
[2020-01-05T23:33:31+0100] [ALPM] upgraded libev (4.27-1 -> 4.31-1)
[2020-01-05T23:33:31+0100] [ALPM] upgraded libieee1284 (0.2.11-7 -> 0.2.11-8)
[2020-01-05T23:33:31+0100] [ALPM] upgraded libmagick6 (6.9.10.80-1 -> 6.9.10.84-1)
[2020-01-05T23:33:31+0100] [ALPM] upgraded libnm (1.22.0-1 -> 1.22.2-1)
[2020-01-05T23:33:32+0100] [ALPM] upgraded libnm-glib (1.18.2-1 -> 1.18.5dev+12+ga8746f48ca-1)
[2020-01-05T23:33:32+0100] [ALPM] upgraded libpipeline (1.5.1-2 -> 1.5.2-1)
[2020-01-05T23:33:41+0100] [ALPM] upgraded linux-firmware (20191215.eefb5f7-1 -> 20191220.6871bff-1)
[2020-01-05T23:33:47+0100] [ALPM] upgraded linux-headers (5.4.6.arch1-1 -> 5.4.8.arch1-1)
[2020-01-05T23:33:52+0100] [ALPM] upgraded llvm (9.0.0-4 -> 9.0.1-1)
[2020-01-05T23:33:52+0100] [ALPM] upgraded log4cplus (2.0.4-1 -> 2.0.5-1)
[2020-01-05T23:33:52+0100] [ALPM] upgraded python-beautifulsoup4 (4.8.1-1 -> 4.8.2-1)
[2020-01-05T23:33:52+0100] [ALPM] warning: /etc/pacman.d/mirrorlist installed as /etc/pacman.d/mirrorlist.pacnew
[2020-01-05T23:33:52+0100] [ALPM] upgraded pacman-mirrorlist (20191001-2 -> 20200103-1)
[2020-01-05T23:33:52+0100] [ALPM] upgraded lollypop (1.2.16-1 -> 1.2.18-1)
[2020-01-05T23:33:52+0100] [ALPM] upgraded nano (4.6-1 -> 4.7-1)
[2020-01-05T23:33:53+0100] [ALPM] upgraded networkmanager (1.22.0-1 -> 1.22.2-1)
[2020-01-05T23:33:53+0100] [ALPM] upgraded networkmanager-qt (5.65.0-2 -> 5.65.0-3)
[2020-01-05T23:33:53+0100] [ALPM] upgraded nodejs (13.5.0-1 -> 13.5.0-2)
[2020-01-05T23:33:54+0100] [ALPM] upgraded npm (6.12.1-1 -> 6.13.4-1)
[2020-01-05T23:33:54+0100] [ALPM] upgraded nvidia (440.44-5 -> 440.44-9)
[2020-01-05T23:33:55+0100] [ALPM] upgraded opencl-nvidia (440.44-1 -> 440.44-2)
[2020-01-05T23:33:55+0100] [ALPM] upgraded opensubdiv (3.4.0-2 -> 3.4.0-3)
[2020-01-05T23:33:55+0100] [ALPM] upgraded pacman-contrib (1.2.0-3 -> 1.3.0-1)
[2020-01-05T23:33:56+0100] [ALPM] upgraded python-babel (2.7.0-3 -> 2.8.0-4)
[2020-01-05T23:33:56+0100] [ALPM] upgraded python-cachecontrol (0.12.5-6 -> 0.12.6-1)
[2020-01-05T23:33:56+0100] [ALPM] upgraded python-imagesize (1.1.0-3 -> 1.2.0-1)
[2020-01-05T23:33:56+0100] [ALPM] upgraded python-numpy (1.17.4-1 -> 1.18.0-1)
[2020-01-05T23:33:56+0100] [ALPM] upgraded python-scipy (1.3.1-2 -> 1.4.1-1)
[2020-01-05T23:33:56+0100] [ALPM] upgraded python-shiboken2 (5.14.0-2 -> 5.14.0-3)
[2020-01-05T23:33:56+0100] [ALPM] upgraded python2-cachecontrol (0.12.5-6 -> 0.12.6-1)
[2020-01-05T23:33:57+0100] [ALPM] upgraded python2-opengl (3.1.4-1 -> 3.1.5-1)
[2020-01-05T23:33:57+0100] [ALPM] upgraded python2-pathlib2 (2.3.4-1 -> 2.3.5-1)
[2020-01-05T23:33:57+0100] [ALPM] upgraded qt5-tools (5.14.0-1 -> 5.14.0-2)
[2020-01-05T23:33:57+0100] [ALPM] upgraded rubygems (3.0.6-1 -> 3.1.2-1)
[2020-01-05T23:33:57+0100] [ALPM] upgraded s-nail (14.9.15-3 -> 14.9.16-2)
[2020-01-05T23:33:57+0100] [ALPM] upgraded shiboken2 (5.14.0-2 -> 5.14.0-3)
[2020-01-05T23:33:57+0100] [ALPM] upgraded smartmontools (7.0-1 -> 7.1-1)
[2020-01-05T23:33:57+0100] [ALPM] upgraded sshfs (3.6.0-1 -> 3.7.0-1)
[2020-01-05T23:33:57+0100] [ALPM] upgraded sudo (1.8.29-1 -> 1.8.30-1)
[2020-01-05T23:33:58+0100] [ALPM] upgraded texstudio (2.12.16-1 -> 2.12.18-1)
[2020-01-05T23:33:58+0100] [ALPM] upgraded virtualbox-host-modules-arch (6.1.0-5 -> 6.1.0-9)
[2020-01-05T23:34:02+0100] [ALPM] upgraded vivaldi (2.10.1745.21-1 -> 2.10.1745.23-1)
[2020-01-05T23:34:09+0100] [ALPM] upgraded wine (5.0rc2-1 -> 5.0rc4-1)
[2020-01-05T23:34:09+0100] [ALPM] upgraded winetricks (20190912-1 -> 20191224-1)
[2020-01-05T23:34:09+0100] [ALPM] upgraded xorg-server-devel (1.20.6-2 -> 1.20.6-3)
[2020-01-05T23:34:10+0100] [ALPM] upgraded xorg-server-xephyr (1.20.6-2 -> 1.20.6-3)
[2020-01-05T23:34:10+0100] [ALPM] upgraded xorg-server-xnest (1.20.6-2 -> 1.20.6-3)
[2020-01-05T23:34:10+0100] [ALPM] upgraded xorg-server-xvfb (1.20.6-2 -> 1.20.6-3)
[2020-01-05T23:34:10+0100] [ALPM] upgraded xorg-server-xwayland (1.20.6-2 -> 1.20.6-3)
[2020-01-05T23:34:10+0100] [ALPM] upgraded youtube-dl (2019.11.28-1 -> 2020.01.01-1)
[2020-01-05T23:34:19+0100] [ALPM] transaction completed
[2020-01-05T23:34:21+0100] [ALPM] running '20-systemd-sysusers.hook'...
[2020-01-05T23:34:21+0100] [ALPM] running '30-systemd-binfmt.hook'...
[2020-01-05T23:34:21+0100] [ALPM] running '30-systemd-daemon-reload.hook'...
[2020-01-05T23:34:21+0100] [ALPM] running '30-systemd-tmpfiles.hook'...
[2020-01-05T23:34:21+0100] [ALPM] running '30-systemd-udev-reload.hook'...
[2020-01-05T23:34:21+0100] [ALPM] running '30-systemd-update.hook'...
[2020-01-05T23:34:21+0100] [ALPM] running '60-depmod.hook'...
[2020-01-05T23:34:27+0100] [ALPM] running '90-mkinitcpio-install.hook'...
[2020-01-05T23:34:27+0100] [ALPM-SCRIPTLET] ==> Building image from preset: /etc/mkinitcpio.d/linux.preset: 'default'
[2020-01-05T23:34:27+0100] [ALPM-SCRIPTLET]   -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
[2020-01-05T23:34:27+0100] [ALPM-SCRIPTLET] ==> Starting build: 5.4.8-arch1-1
[2020-01-05T23:34:27+0100] [ALPM-SCRIPTLET]   -> Running build hook: [base]
[2020-01-05T23:34:27+0100] [ALPM-SCRIPTLET]   -> Running build hook: [udev]
[2020-01-05T23:34:27+0100] [ALPM-SCRIPTLET]   -> Running build hook: [autodetect]
[2020-01-05T23:34:28+0100] [ALPM-SCRIPTLET]   -> Running build hook: [modconf]
[2020-01-05T23:34:28+0100] [ALPM-SCRIPTLET]   -> Running build hook: [block]
[2020-01-05T23:34:29+0100] [ALPM-SCRIPTLET]   -> Running build hook: [filesystems]
[2020-01-05T23:34:29+0100] [ALPM-SCRIPTLET]   -> Running build hook: [keyboard]
[2020-01-05T23:34:29+0100] [ALPM-SCRIPTLET]   -> Running build hook: [fsck]
[2020-01-05T23:34:29+0100] [ALPM-SCRIPTLET] ==> Generating module dependencies
[2020-01-05T23:34:29+0100] [ALPM-SCRIPTLET] ==> Creating gzip-compressed initcpio image: /boot/initramfs-linux.img
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET] ==> Image generation successful
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET] ==> Building image from preset: /etc/mkinitcpio.d/linux.preset: 'fallback'
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET]   -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux-fallback.img -S autodetect
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET] ==> Starting build: 5.4.8-arch1-1
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET]   -> Running build hook: [base]
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET]   -> Running build hook: [udev]
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET]   -> Running build hook: [modconf]
[2020-01-05T23:34:31+0100] [ALPM-SCRIPTLET]   -> Running build hook: [block]
[2020-01-05T23:34:32+0100] [ALPM-SCRIPTLET] ==> WARNING: Possibly missing firmware for module: aic94xx
[2020-01-05T23:34:32+0100] [ALPM-SCRIPTLET] ==> WARNING: Possibly missing firmware for module: wd719x
[2020-01-05T23:34:34+0100] [ALPM-SCRIPTLET]   -> Running build hook: [filesystems]
[2020-01-05T23:34:35+0100] [ALPM-SCRIPTLET]   -> Running build hook: [keyboard]
[2020-01-05T23:34:36+0100] [ALPM-SCRIPTLET]   -> Running build hook: [fsck]
[2020-01-05T23:34:38+0100] [ALPM-SCRIPTLET] ==> Generating module dependencies
[2020-01-05T23:34:38+0100] [ALPM-SCRIPTLET] ==> Creating gzip-compressed initcpio image: /boot/initramfs-linux-fallback.img
[2020-01-05T23:34:42+0100] [ALPM-SCRIPTLET] ==> Image generation successful
[2020-01-05T23:34:42+0100] [ALPM] running 'dbus-reload.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'detect-old-perl-modules.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'fontconfig.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'fontconfig-32.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'gio-querymodules.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'glib-compile-schemas.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'gtk-update-icon-cache.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'texinfo-install.hook'...
[2020-01-05T23:34:42+0100] [ALPM] running 'update-appstream-cache.hook'...
[2020-01-05T23:34:43+0100] [ALPM-SCRIPTLET] AppStream cache update completed successfully.
[2020-01-05T23:34:43+0100] [ALPM] running 'update-desktop-database.hook'...
[2020-01-05T23:34:43+0100] [ALPM] running 'update-mime-database.hook'...
[2020-01-05T23:34:43+0100] [ALPM] running 'xorg-mkfontscale.hook'...
[2020-01-05T23:34:43+0100] [ALPM] running 'zz-auto-clear-cache.hook'...

Last edited by fraret (2020-01-08 15:11:52)

Offline

#2 2020-01-08 14:50:45

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 8,675

Re: [SOLVED] Some applications lagging in KDE plasma

"last Sunday" has no meaning to anyone, post the pacman.log from that  transaction.

Standard guess, if you use xf86-video-intel for your xorg, remove it and use modesetting instead. Potential other guess, you have compositing disabled due to shader compilation races/issues on the Qt 5.14 update, post

qdbus org.kde.KWin /KWin supportInformation

in [ code ] [ /code] tags without spaces, double check your compositor settings.

If none of these are the case run a KDE application through a terminal post the output.

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#3 2020-01-08 15:12:01

fraret
Member
Registered: 2016-12-29
Posts: 2

Re: [SOLVED] Some applications lagging in KDE plasma

Uninstalling xf86-video-intel (and thus forcing xorg to use modesetting) seems to have solved the problem.

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