Bug#745875: /usr/bin/kwin: KWin consumes 100% of one of my CPUs while idle
Package: kde-window-manager
Version: 4:4.11.8-1
Severity: normal
File: /usr/bin/kwin
KWin consumes 100% of one of my CPUs while the computer is idle. I suspect it
has something to do with the screensaver, because it stops doing so whenever I
press any key or move the mouse. I made a small script that run top every 10
seconds and logs it to a file, and I got lots of this kind of reports:
top - 09:47:36 up 18:13, 5 users, load average: 1,00, 1,03, 1,05
Tasks: 139 total, 3 running, 136 sleeping, 0 stopped, 0 zombie
%Cpu(s): 9,4 us, 28,7 sy, 0,5 ni, 60,4 id, 0,8 wa, 0,0 hi, 0,1 si, 0,0 st
KiB Mem: 2058752 total, 1970636 used, 88116 free, 48248 buffers
KiB Swap: 4200992 total, 2596 used, 4198396 free. 1205316 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
17638 marc 20 0 2928228 96636 63516 R 103,7 4,7 661:16.57 kwin
Notice the amount of accumulated CPU time. The screensaver is configured to
just show the blank screen, so it really shouldn't affect performance.
-- System Information:
Debian Release: jessie/sid
APT prefers testing
APT policy: (990, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.12-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=ca_ES.UTF-8, LC_CTYPE=ca_ES.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages kde-window-manager depends on:
ii kde-runtime 4:4.11.3-1
ii kde-style-oxygen 4:4.11.8-1
ii libc6 2.18-4
ii libegl1-mesa [libegl1-x11] 10.1.0-5
ii libgcc1 1:4.8.2-16
ii libgl1-mesa-glx [libgl1] 10.1.0-5
ii libgles2-mesa [libgles2] 10.1.0-5
ii libice6 2:1.0.8-2
ii libkactivities6 4:4.11.5-1
ii libkcmutils4 4:4.11.5-3
ii libkdeclarative5 4:4.11.5-3
ii libkdecorations4abi2 4:4.11.8-1
ii libkdecore5 4:4.11.5-3
ii libkdeui5 4:4.11.5-3
ii libkio5 4:4.11.5-3
ii libknewstuff3-4 4:4.11.5-3
ii libkwineffects1abi5 4:4.11.8-1
ii libkwinglesutils1 4:4.11.8-1
ii libkwinglutils1abi2 4:4.11.8-1
ii libkworkspace4abi2 4:4.11.8-1
ii libplasma3 4:4.11.5-3
ii libqt4-dbus 4:4.8.5+git242-g0315971+dfsg-2
ii libqt4-declarative 4:4.8.5+git242-g0315971+dfsg-2
ii libqt4-script 4:4.8.5+git242-g0315971+dfsg-2
ii libqtcore4 4:4.8.5+git242-g0315971+dfsg-2
ii libqtgui4 4:4.8.5+git242-g0315971+dfsg-2
ii libsm6 2:1.2.1-2
ii libstdc++6 4.8.2-16
ii libwayland-client0 1.4.0-1
ii libwayland-egl1-mesa [libwayland-egl1] 10.1.0-5
ii libx11-6 2:1.6.2-1
ii libx11-xcb1 2:1.6.2-1
ii libxcb-composite0 1.10-2
ii libxcb-damage0 1.10-2
ii libxcb-image0 0.3.9-1
ii libxcb-keysyms1 0.3.9-1
ii libxcb-randr0 1.10-2
ii libxcb-render0 1.10-2
ii libxcb-shape0 1.10-2
ii libxcb-shm0 1.10-2
ii libxcb-sync1 1.10-2
ii libxcb-xfixes0 1.10-2
ii libxcb-xtest0 1.10-2
ii libxcb1 1.10-2
ii libxcursor1 1:1.1.14-1
ii libxext6 2:1.3.2-1
ii libxrandr2 2:1.4.2-1
ii libxxf86vm1 1:1.1.3-1
ii perl 5.18.2-2+b1
kde-window-manager recommends no packages.
kde-window-manager suggests no packages.
-- no debconf information
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