Binary package hint: kdebase-workspace
After 1 day working , after I come back in the morning my coputer become very slow for every tasks, and I need to restart like windows to restore normal speed...
Linux P5QC 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
uptime:
10:13:20 up 1 day, 57 min, 8 users, load average: 0.19, 0.23, 0.19
Linux P5QC 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
Description: Ubuntu 11.04
Release: 11.04
kwin:
Installé : (aucun)
Candidat : (aucun)
Table de version :
kde-window-manager: /usr/share/kde4/services/kwin/startupfeedback.desktop
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kwin_art_clients.mo
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin3_plugin.pl
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_update_tabbox_settings.upd
kde-window-manager: /usr/share/kde4/apps/kwin/default_rules
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kcmkwincompositing.mo
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwindecoration/decoration.png
kde-window-manager: /usr/lib/kde4/kwin3_aurorae.so
kde-window-manager: /usr/share/kde4/apps/kwin/default_rules/fsp_workarounds_1.kwinrules
kde-window-manager: /usr/share/kde4/services/kwin/magnifier.desktop
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kwin_effects.mo
kde-window-manager: /usr/share/kde4/apps/kwin/lookingglass.frag
kde-window-manager: /usr/share/kde4/services/kwintabbox.desktop
kde-window-manager: /usr/share/kde4/services/kwinrules.desktop
language-pack-kde-en-base: /usr/share/locale-langpack/en_AU/LC_MESSAGES/kcm_kwindesktop.mo
kde-window-manager: /usr/share/kde4/apps/kwin/invert.vert
kde-window-manager: /usr/lib/kde4/libkdeinit/libkdeinit4_kwin_rules_dialog.so
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_on_off.upd
kde-window-manager: /usr/share/kde4/apps/kwin
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kwin_lib.mo
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwintabbox
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kwin_clients.mo
kde-window-manager: /usr/lib/kde4/kwin4_effect_builtins.so
kde-window-manager: /usr/share/kde4/services/kwin/logout.desktop
kde-window-manager: /usr/bin/kwin
kubuntu-default-settings: /usr/share/kubuntu-default-settings/kde4-profile/default/share/config/kwinrc
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kcmkwinrules.mo
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_focus2.sh
kde-window-manager: /usr/lib/kde4/kcm_kwinscreenedges.so
kde-window-manager: /usr/share/kde4/apps/kwin/snowflake.png
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kwinstartmenu.mo
kde-window-manager: /usr/share/kde4/services/kwin/diminactive.desktop
kde-window-manager: /usr/share/kde4/services/kwin/showfps_config.desktop
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kwin.mo
kde-window-manager: /usr/share/kde4/apps/kwin/b2.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/circle-edgy.png
kde-window-manager: /usr/share/kde4/services/kwinscreenedges.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/invert.frag
kde-window-manager: /usr/lib/kde4/libexec/kwin_opengl_test
kde-window-manager: /usr/share/kde4/services/kwin/highlightwindow.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/trackmouse.png
kde-window-manager: /usr/lib/kde4/kcm_kwinrules.so
kde-window-manager: /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kcmkwinscreenedges.mo
kde-window-manager: /usr/share/kde4/services/kwin/zoom_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/minimizeanimation.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/oxygenclient.desktop
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kwinshutdown.mo
kde-window-manager: /usr/share/kde4/apps/kwin/snow.vert
kde-window-manager: /usr/lib/kde4/kcm_kwintabbox.so
kde-window-manager: /usr/share/kde4/services/kwin/snaphelper.desktop
kde-window-manager: /usr/share/kde4/services/kwin/thumbnailaside_config.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwindecoration/buttons.png
libkwineffects1a: /usr/lib/libkwineffects.so.1
kde-window-manager: /usr/share/kde4/services/kwin/trackmouse_config.desktop
kde-window-manager: /usr/lib/kde4/kwin3_plastik.so
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin.upd
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwiniconify.upd
kde-window-manager: /usr/share/kde4/apps/kwin/explosion-end.png
kde-window-manager: /usr/lib/kde4/kcm_kwinoptions.so
kde-window-manager: /usr/share/kde4/services/kwin/explosion.desktop
kde-window-manager: /usr/share/kde4/services/kwin/sheet.desktop
kde-window-manager: /usr/share/kde4/services/kwin/diminactive_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/boxswitch.desktop
kde-window-manager: /usr/share/kde4/services/kwin/shadow_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/desktopgrid.desktop
libkwineffects1a: /usr/share/doc/libkwineffects1a/copyright
kde-window-manager: /usr/share/kde4/apps/kwin/explosion.vert
kde-window-manager: /usr/share/kde4/apps/kwin/sphere.vert
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwindecoration/index.docbook
kde-window-manager: /usr/share/kde4/services/kwin/zoom.desktop
kde-window-manager: /usr/lib/kde4/kcm_kwincompositing.so
kde-window-manager: /usr/share/kde4/services/kwin/dashboard.desktop
kde-window-manager: /usr/share/kde4/servicetypes/kwineffect.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwinscreenedges/index.cache.bz2
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kcm_kwintabbox.mo
kde-window-manager: /usr/share/kde4/apps/kwin/default_rules/plasma_desktop_containment.kwinrules
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwindecoration/main.png
kde-window-manager: /usr/share/kde4/apps/kwin/laptop.desktop
kde-window-manager: /usr/share/kde4/services/kwin/wobblywindows_config.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/snow.frag
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kcmkwinrules.mo
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kwin_clients.mo
kde-window-manager: /usr/share/kde4/services/kwin/lookingglass_config.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/shadow-texture.png
kde-window-manager: /usr/share/kde4/services/kwin/cubeslide.desktop
kde-window-manager: /usr/share/kde4/services/kwin/scalein.desktop
kde-window-manager: /usr/share/kde4/services/kwindecoration.desktop
kde-window-manager: /usr/share/icons/oxygen/48x48/apps/kwin.png
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kcm_kwintabbox.mo
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kcmkwincompositing.mo
kde-window-manager: /usr/share/kde4/services/kwin/mousemark_config.desktop
kde-window-manager: /usr/lib/libkwinnvidiahack.so.4
kde-window-manager: /usr/share/kde4/services/kwin/flipswitch.desktop
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kcmkwindecoration.mo
kde-window-manager: /usr/share/kde4/services/kwin/invert_config.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwincompositing/index.cache.bz2
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwindecoration/index.cache.bz2
kde-window-manager: /usr/share/kde4/services/kwin/shadow.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/sharpen.vert
kde-window-manager: /usr/share/kde4/apps/kwin/explosion.frag
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwinscreenedges/common
libkwineffects1a: /usr/share/doc/libkwineffects1a/README
kde-window-manager: /usr/share/kde4/services/kwin/presentwindows_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/boxswitch_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/windowgeometry_config.desktop
kubuntu-netbook-default-settings: /usr/share/kubuntu-netbook-default-settings/share/config/kwinrc
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kcm_kwindesktop.mo
kde-window-manager: /usr/share/kde4/services/kwin/sharpen_config.desktop
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_focus1.upd
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kwinstartmenu.mo
kubuntu-default-settings: /usr/share/apps/kconf_update/kubuntu-fix-kwin-default-size.py
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwinupdatewindowsettings.upd
kde-window-manager: /usr/lib/kde4/kwin_b2_config.so
kde-window-manager: /usr/share/kde4/services/kwin/wobblywindows.desktop
kde-window-manager: /usr/share/kde4/services/kwin/mousemark.desktop
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kcmkwinscreenedges.mo
kde-window-manager: /usr/share/kde4/apps/kwin/tabstrip.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwindecoration
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwindecoration
kde-window-manager: /usr/lib/kde4/kwin_oxygen_config.so
kde-window-manager: /usr/share/icons/oxygen/32x32/apps/kwin.png
kde-window-manager: /usr/share/kde4/apps/kwin/sharpen.frag
kde-window-manager: /usr/share/kde4/services/kwin/magnifier_config.desktop
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kwinstartmenu.mo
kde-window-manager: /usr/lib/kde4/kwin3_tabstrip.so
kde-window-manager: /usr/share/kde4/services/kwinoptions.desktop
kde-window-manager: /usr/share/kde4/services/kwin/slidingpopups.desktop
kde-window-manager: /usr/share/kde4/services/kwin/presentwindows.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/circle.png
kde-window-manager: /usr/share/kde4/services/kwin/translucency.desktop
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_window_shortcuts.upd
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwincompositing/common
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kcm_kwintabbox.mo
language-pack-kde-en-base: /usr/share/locale-langpack/en_AU/LC_MESSAGES/kwinstartmenu.mo
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kcmkwindecoration.mo
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kwin.mo
kde-window-manager: /usr/share/kde4/services/kwin/windowgeometry.desktop
kde-window-manager: /usr/share/kde4/services/kwin/lookingglass.desktop
kde-window-manager: /usr/share/kde4/services/kwin/dashboard_config.desktop
kde-window-manager: /usr/share/icons/oxygen/scalable/apps/kwin.svgz
kde-window-manager: /usr/share/kde4/services/kwin/slideback.desktop
kde-window-manager: /usr/lib/kde4/kwin3_b2.so
kde-window-manager: /usr/share/kde4/services/kwin/screenshot.desktop
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kcmkwinrules.mo
kde-window-manager: /usr/share/kde4/services/kwin/fade.desktop
kde-window-manager: /usr/lib/kde4/kwin3_oxygen.so
kde-window-manager: /usr/share/kde4/services/kwin/slide.desktop
kde-window-manager: /usr/lib/kde4/kcm_kwindecoration.so
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwintabbox/index.docbook
kde-window-manager: /usr/lib/kde4/kcm_kwin4_effect_builtins.so
kde-window-manager: /usr/share/kde4/services/kwin
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_focus1.sh
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_focus2.upd
kde-window-manager: /usr/lib/kde4/kwin_plastik_config.so
kubuntu-default-settings: /usr/share/kubuntu-default-settings/kde4-profile/default/share/apps/kwin
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kcmkwincompositing.mo
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwinscreenedges
kde-window-manager: /usr/share/kde4/services/kwin/resize.desktop
kde-window-manager: /usr/share/kde4/services/kwin/trackmouse.desktop
kde-window-manager: /usr/share/kde4/services/kwinadvanced.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/cubecap.png
kde-window-manager: /usr/share/kde4/services/kwin/invert.desktop
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kwin_art_clients.mo
kde-window-manager: /usr/share/kde4/services/kwin/blur.desktop
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwincompositing
kde-window-manager: /usr/share/kde4/services/kwin/login.desktop
kde-window-manager: /usr/lib/kconf_update_bin/kwin_update_window_settings
libkwineffects1a: /usr/lib/libkwineffects.so.1.0.0
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwincompositing/index.docbook
kde-window-manager: /usr/share/kde4/services/kwinfocus.desktop
kde-window-manager: /usr/share/kde4/services/kwin/coverswitch.desktop
kde-window-manager: /usr/share/kde4/services/kwin/cube.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwincompositing/index.docbook
kde-window-manager: /usr/lib/kde4/kwin3_laptop.so
kde-window-manager: /usr/share/kde4/services/kwin/showfps.desktop
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwinscreenedges/index.cache.bz2
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwinsticky.upd
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin3_plugin.upd
language-pack-kde-en-base: /usr/share/locale-langpack/en_AU/LC_MESSAGES/kwin.mo
kde-window-manager: /usr/share/kde4/services/kwin/cubeslide_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/translucency_config.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwintabbox/index.cache.bz2
kde-window-manager: /usr/lib/kconf_update_bin/kwin_update_default_rules
kubuntu-default-settings: /usr/share/kubuntu-default-settings/kde4-profile/default/share/apps/kwin/cubecap.png
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kwin_lib.mo
kde-window-manager: /usr/share/kde4/services/kwin/magiclamp_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/sharpen.desktop
kde-window-manager: /usr/share/kde4/services/kwin/snow.desktop
kde-window-manager: /usr/share/kde4/services/kwinmoving.desktop
kde-window-manager: /usr/share/icons/oxygen/16x16/apps/kwin.png
language-pack-kde-en-base: /usr/share/locale-langpack/en_AU/LC_MESSAGES/kwin_lib.mo
kde-window-manager: /usr/share/kde4/services/kwinactions.desktop
libkwineffects1a: /usr/share/lintian/overrides/libkwineffects1a
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_fsp_workarounds_1.upd
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwincompositing/index.cache.bz2
kde-window-manager: /usr/lib/libkwinnvidiahack.so.4.6.0
kde-window-manager: /usr/lib/kconf_update_bin/kwin_update_tabbox_settings
language-pack-kde-en-base: /usr/share/locale-langpack/en_AU/LC_MESSAGES/kcmkwinscreenedges.mo
kde-window-manager: /usr/share/kde4/apps/kwin/aurorae.desktop
kde-window-manager: /usr/lib/kde4/libexec/kwin_rules_dialog
kde-window-manager: /usr/share/kde4/services/kwin/resize_config.desktop
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kcm_kwindesktop.mo
kde-window-manager: /usr/share/kde4/services/kwin/coverswitch_config.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwindecoration/common
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kwin_effects.mo
kde-window-manager: /usr/share/kde4/apps/kwin/kwin.notifyrc
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwinscreenedges/index.docbook
kde-window-manager: /usr/share/kde4/apps/kwin/cylinder.vert
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwinscreenedges/index.docbook
kde-window-manager: /usr/share/kde4/config.kcfg/kwin.kcfg
kde-window-manager: /usr/share/kde4/services/kwincompositing.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwinscreenedges
kde-window-manager: /usr/share/kde4/services/kwin/cube_config.desktop
kde-window-manager: /usr/lib/kde4/libexec/kwin_killer_helper
kde-window-manager: /usr/lib/kde4/kcm_kwindesktop.so
libkwineffects1a: /usr/share/doc/libkwineffects1a
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwincompositing
kde-window-manager: /usr/share/kde4/services/kwin/dialogparent.desktop
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwinscreenedges/common
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kwin_clients.mo
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwintabbox/common
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kcmkwindecoration.mo
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kwin.mo
kde-window-manager: /usr/share/kde4/services/kwin/fadedesktop.desktop
kde-window-manager: /usr/share/kde4/services/kwin/flipswitch_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/taskbarthumbnail.desktop
kde-window-manager: /usr/share/kde4/services/kwin/thumbnailaside.desktop
kubuntu-default-settings: /usr/share/apps/kconf_update/kubuntu-fix-kwin-default-size.upd
libkwineffects1a: /usr/share/doc/libkwineffects1a/changelog.Debian.gz
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwindecoration/common
kde-window-manager: /usr/share/kde4/services/kwin/blur_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/glide.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/DefaultTabBoxLayouts.xml
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwindecoration/index.cache.bz2
kde-window-manager: /usr/share/kde4/services/kwin/fallapart.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/lookingglass.vert
kde-window-manager: /usr/lib/kde4/kwin_tabstrip_config.so
kde-window-manager: /usr/share/kde4/apps/kwin/cylinder.frag
kde-window-manager: /usr/share/kde4/apps/kconf_update/kwin_window_shortcuts.sh
kde-window-manager: /usr/share/kde4/services/kwin/magiclamp.desktop
kde-window-manager: /usr/share/doc/kde/HTML/en/kcontrol/kwindecoration/index.docbook
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/kcm_kwindesktop.mo
kde-window-manager: /usr/share/kde4/services/kwin/dimscreen.desktop
kde-window-manager: /usr/share/kde4/services/kwin/showpaint.desktop
kde-window-manager: /usr/share/kde4/services/kwin/glide_config.desktop
kde-window-manager: /usr/share/kde4/apps/kwin/explosion-start.png
kde-window-manager: /usr/share/kde4/apps/kwin/plastik.desktop
kde-window-manager: /usr/share/kde4/services/kwin/desktopgrid_config.desktop
kde-window-manager: /usr/share/kde4/services/kwin/snow_config.desktop
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/kcontrol/kwincompositing/common
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: kde-window-manager 4:4.6.2a-0ubuntu5.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed May 25 10:11:36 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/kwin
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
ProcEnviron:
LANGUAGE=fr_CH:fr
LANG=fr_CH.UTF-8
SHELL=/bin/bash
SourcePackage: kdebase-workspace
UpgradeStatus: No upgrade log present (probably fresh install)
What graphics driver are you using?
Also, assuming you can reproduce the issue, it would be good if you could install xrestop, reproduce the issue and then run the following in a terminal
xrestop -b -m 1 &> log
That will create a log file with all current windows and various attributes of those (e.g. memory consumption), this might help with debugging. Though I fear it is a simple driver bug really.