Le vendredi 4 novembre 2011 15:49:15 relosrl, vous avez écrit : > Now I'm sure the graphics card is properly configured. But I have big > problems with kwin performance. The programs work well and quickly (eg > Firefox), the window manager is a disastrously. Very slow and several > artifacts. The server is a HP585 + 4X2800 + 8GB RAM, clients are celeron > 700 with 512 MB RAM and Radeon 9000. What can I do to understand where > is the problem? > http://imageshack.us/photo/my-images/39/schermata1hia.png/
The problem comes from KDE's Oxygen theme which use a lot of network bandwith. Here after changing style, windows decoration and desktop theme, every artifacts dispeared. I've also changed several other things to use KDE 4 with my LTSP network at a reasonable speed. Below is my memo list and some of my config files (can't access everything at the moment). Hope this help xavier Remove graphics artifacts 1. Change desktop theme to "opaquity" desktop (no transparency) install theme in /usr/local/share/kde4/apps/desktoptheme/opaquity and symlink /usr/share/kde4/apps/desktoptheme/opaquity 2. Use Tabstrip kwin style 3. Use Kde legacy cursorTheme 4. Use Phase style (without gradients) Prevent fat xsession-errors run kdebugdialog -> deselect all -> apply this should stop errors being saved in .xsession-errors or add DisableAll=false in file .kde/share/config/kdebugrc Kwin desktop effects force kwin to not verify OpenGL lib (bug since KDE 4.5.1 with radeon) OpenGLIsUnsafe" should be "false" (if true this marks a detected crash due to broken drivers while attempting to set opengl and prevent further crashes by skipping such tests). See http://kubuntuforums.net/forums/index.php?topic=3113529.msg240826#msg240826 and follow the links towards kde bugzilla and Martin Graesslin's blog (kwin developer). Change config file with kwriteconfig --file kwinrc --group Compositing --key OpenGLIsUnsafe false Use the raster engine to accelerate rendering One should install a software rasterizer and export QT_GRAPHICSSYSTEM=raster To achieve this , install package libgl1-mesa-swx11 which is a library providing a pure software rasterizer and create the file ~/.kde/share/env/QT_GRAPHICSSYSTEM.sh containing QT_GRAPHICSSYSTEM=raster Note that this has nothing to do with kwin effects or compositing opengl. Supress xsession-errors qalculate I/O warning : failed to load external entity "/home/xavier/.qalculate/eurofxref-daily.xml" install qalculate-gtk, launch it and accept update of changes rates check that ~/.qalculate/eurofxref-daily.xml is not empty or update changes rate again. Then copy file in /etc/skel/.qalculate/eurofxref-daily.xml Use Nepomuk with virtusoso backend. Don't disable Nepomuk, but Strigi Akonadi uses Nepomuk for searching information stored in it. The file indexer (Strigi) is not required. From Ivan Kucik (Lancelot menu author): Nepomuk =/= desktop search Nepomuk does provide desktop search (via Strigi) amongst other things. Desktop search can be disabled. Nepomuk is required for things to work properly - and with every version of KDE SC, more things will need it. Do disable unused Nepomuk modules. Column mode in Dolphin is slower than other modes. Need to write dolphin config file in /etc/kde and lock column mode with [$i]. Config files in alphabetical order [$i] and [$e] lock things or expand variables. See kde sysadmin doc. ============================================ My locked config files goes in default KDEDIRS (/etc/kde4 in Debian) or in /etc/skel. Don't ask me why, but I remember that some are only working (at least for me) in /etc/skel in KDEDIRS /etc/kde4 kcminputrc: [Mouse] Acceleration=1.2 MouseButtonMapping=RightHanded ReverseScrollPolarity=false Threshold=4 cursorTheme=#kde_legacy# kdedrc: [Module-device_automounter] autoload=true [Module-freespacenotifier] autoload=false [Module-keyboard] autoload=true [Module-khotkeys] autoload=true [Module-kmixd] autoload=true [Module-ktimezoned] autoload=true [Module-kwrited] autoload=false [Module-nepomuksearchmodule] autoload=false [Module-networkstatus] autoload=true [Module-powerdevil] autoload=false [Module-randrmonitor] autoload=false [Module-remotedirnotify] autoload=true [Module-solidautoeject] autoload=true [Module-statusnotifierwatcher] autoload=true kickoffrc: [Favorites] FavoriteURLs=/usr/share/applications/kde4/konqbrowser.desktop,/usr/share/applications/kde4/systemsettings.desktop,/usr/share/applications/kde4/dolphin.desktop,/usr/share/a pplications/iceweasel.desktop [KRunner] loadAll=false [KRunner][PlasmaRunnerManager] pluginWhiteList=places,shell,services,bookmarks,recentdocuments,locations korgarc: [General] Autostart=false Enabled=false krunnerrc: [Plugins] CharacterRunnerEnabled=false PowerDevilEnabled=false audioplayercontrolEnabled=false bookmarksEnabled=true browserhistoryEnabled=true calculatorEnabled=true desktopsessionsEnabled=false kabccontactsEnabled=true katesessionsEnabled=true killEnabled=false konquerorsessionsEnabled=false konsolesessionsEnabled=false kopete_runnerEnabled=true krunner_spellcheckEnabled=false locationsEnabled=true nepomuksearchEnabled=false org.kde.datetimeEnabled=false org.kde.events_runnerEnabled=true org.kde.windowedwidgetsEnabled=false placesEnabled=true plasma-desktopEnabled=false recentdocumentsEnabled=true servicesEnabled=true shellEnabled=true solidEnabled=false techbaseEnabled=false unitconverterEnabled=true webshortcutsEnabled=true wikipediaEnabled=false wikitravelEnabled=false windowsEnabled=false ksmserverrc: [General] confirmLogout=true excludeApps= loginMode=restorePreviousLogout offerShutdown=false screenCount=1 shutdownType=0 ksplashrc: [KSplash][$i] Engine=Simple Theme=Simple kwinrc: [Desktops] Name_1= Name_2= Name_3= Name_4= Number=1 [TabBox] ListMode=0 ShowTabBox=true [Windows] IgnoreFocusStealingClasses=kio_uiserver [Compositing][$i] CheckIsSafe=true DisableChecks=false Enabled=false [Style] BorderSize=1 ButtonsOnLeft[$i]=M ButtonsOnRight=HIA__X CustomButtonPositions=false PluginLib[$i]=kwin3_tabstrip ShowToolTips=true nepomukserverrc: [$i] [Basic Settings] Start Nepomuk=false [Service-nepomukmigration1] autostart=false [Service-nepomukstrigiservice] autostart=false [main Settings] Maximum memory=30 Storage Dir[$e]=$HOME/.kde/share/apps/nepomuk/repository/main/ Used Soprano Backend=virtuosobackend plasmarc: [PlasmaToolTips] Delay[$i]=-1 [Theme] name[$i]=opaquity Config files in /etc/skel ============== .config/phasestyle.conf [General] gradients=false highlights=false Config files in /etc/skel/.kde/env ==================== QT_GRAPHICSSYSTEM.sh export QT_GRAPHICSSYSTEM=raster Regards, Xavier xav...@alternatif.org - 06 29 23 16 59 - 09 54 21 52 2 ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _____________________________________________________________________ Ltsp-discuss mailing list. 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