Hi Rik- Thank you very much for the advice. I fully updated my system again, with no packages held back, rebooted, and was happy to try removing the two packages you mentioned.
I was pleasantly surprised that I seem to have full performance with graphical effects, so apparently some package update in the last 12-ish hours has fixed this issue. I attempted to remove the two packages you mentioned, to give you better feedback, but I found that I don't have any package installed with the prefix "libglv" -- I'm typing "apt remove libglv" and tab-completion isn't suggesting any installed packages. I likewise do not have a package "libegl1" installed, but 'apt remove' tab completion suggested 'libegl1-mesa', and I'm guessing that removing this would have a lot of side effects: """ root@isomorphic:~# apt remove libegl1-mesa Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: chromium-codecs-ffmpeg-extra geoip-database-extra gir1.2-polkit-1.0 gir1.2-secret-1 kdegames-card-data-kf5 libaribb24-0 libbasicusageenvironment1 libcddb2 libcfitsio5 libdc1394-22 libdmtx0a libdvbpsi10 libebml4v5 libeditorconfig0 libgee-0.8-2 libgit2-26 libgps23 libgroupsock8 libhttp-parser2.7.1 libjavascriptcoregtk-4.0-18 libjs-openlayers libkate1 libkf5akonadicalendar-data libkf5alarmcalendar-data libkf5calendarutils-data libkf5cddb-data libkf5compactdisc-data libkf5contacteditor-data libkf5grantleetheme-data libkf5gravatar-data libkf5identitymanagement-data libkf5imap-data libkf5jsapi5 libkf5kdegames-data libkf5ldap-data libkf5pimtextedit-data libkf5sane-data libkf5syntaxhighlighting-data libkf5tnef-data liblivemedia62 liblua5.2-0 libmatroska6v5 libmicrodns0 libmjpegutils-2.1-0 libnfs8 libokteta-data libokteta2core2 libopencore-amrnb0 libopencore-amrwb0 libopenmpt-modplug1 libpackagekitqt5-1 libplacebo3 libproxy-tools libqgpgme7 libqrencode3 libqt5sensors5 libqt5texttospeech5 libquicktime2 libresid-builder0c2a libsdl-image1.2 libsidplay2 libsmi2ldbl libsox-fmt-alsa libsox-fmt-base libsox3 libspandsp2 libspectre1 libupnp6 libusageenvironment3 libva-wayland2 libvlc-bin libvlc5 libvlccore9 libvulkan1 libwireshark-data libwireshark10 libwiretap7 libwscodecs1 libwsutil8 libxcb-xv0 libxfont2 pulseaudio-module-gconf sox transcode transcode-doc twolame vlc-bin vlc-data vlc-l10n vlc-plugin-base vlc-plugin-samba vlc-plugin-video-splitter vlc-plugin-visualization wireshark-common xserver-xorg-legacy zenity-common Use 'apt autoremove' to remove them. The following additional packages will be installed: libportaudio2 The following packages will be REMOVED: amarok amarok-utils apport-kde apturl-kde ark baloo-kf5 bluedevil breeze chromium-browser chromium-browser-l10n dolphin dolphin-plugins drkonqi ffmpeg ffmpegthumbs firefox frameworkintegration gir1.2-gtk-3.0 gstreamer-qapt gwenview k3b k3b-i18n kaccounts-integration kaccounts-providers kactivitymanagerd kamera kate kcalc kcharselect kde-baseapps-bin kde-cli-tools kde-config-gtk-style kde-config-gtk-style-preview kde-config-mailtransport kde-config-screenlocker kde-config-sddm kde-config-telepathy-accounts kde-config-whoopsie kde-runtime kde-spectacle kde-style-breeze kde-style-breeze-qt4 kde-style-oxygen-qt5 kde-style-qtcurve-qt5 kde-telepathy kde-telepathy-approver kde-telepathy-auth-handler kde-telepathy-contact-list kde-telepathy-desktop-applets kde-telepathy-filetransfer-handler kde-telepathy-integration-module kde-telepathy-kaccounts kde-telepathy-kpeople kde-telepathy-minimal kde-telepathy-send-file kde-telepathy-text-ui kdeconnect kdeconnect-plasma kded5 kdegraphics-thumbnailers kdemultimedia-kio-plugins kdenetwork-filesharing kdesdk-dolphin-plugins kdesudo kgamma5 khelpcenter khotkeys kile kimageformat-plugins kinfocenter kinit kio kio-audiocd kio-extras kio-ldap kio-sieve kio-smtp kmenuedit kmines konsole konsole-kpart konversation kpackagelauncherqml kpat krdc kross kscreen ksshaskpass ksysguard ksystemlog ktexteditor-katepart ktnef ktorrent kubuntu-driver-manager kubuntu-notification-helper kwalletmanager kwayland-integration kwin kwin-addons kwin-common kwin-style-breeze kwin-x11 kwrited language-pack-kde-en libavdevice57 libcolorcorrect5 libdbusmenu-qt5-2 libdebconf-kde1 libegl1-mesa libgrantlee-textdocument5 libgtk-3-0 libgtk-3-bin libk3b7 libk3b7-extracodecs libkaccounts1 libkasten3controllers3 libkasten3core3 libkasten3gui3 libkasten3okteta1controllers1 libkasten3okteta1core1 libkasten3okteta1gui1 libkdecorations2-5v5 libkdecorations2private5v5 libkf5akonadiagentbase5 libkf5akonadicalendar5abi1 libkf5akonadicontact5abi1 libkf5akonadicore-bin libkf5akonadicore5abi1 libkf5akonadimime5 libkf5akonadisearchdebug5 libkf5akonadisearchpim5 libkf5akonadiwidgets5 libkf5alarmcalendar5 libkf5auth5 libkf5baloo5 libkf5baloowidgets-bin libkf5baloowidgets-data libkf5baloowidgets5 libkf5bookmarks5 libkf5calendarcore5 libkf5calendarutils-bin libkf5calendarutils5 libkf5cddb5 libkf5compactdisc5 libkf5completion5 libkf5configgui5 libkf5configwidgets5 libkf5contacteditor5 libkf5contacts5 libkf5crash5 libkf5dbusaddons5 libkf5declarative5 libkf5emoticons-bin libkf5emoticons5 libkf5filemetadata-bin libkf5globalaccel-bin libkf5globalaccel5 libkf5globalaccelprivate5 libkf5grantleetheme-plugins libkf5grantleetheme5 libkf5gravatar5 libkf5guiaddons5 libkf5iconthemes-bin libkf5iconthemes5 libkf5identitymanagement5abi1 libkf5idletime5 libkf5imap5 libkf5itemviews5 libkf5jobwidgets5 libkf5jsembed5 libkf5kaddressbookgrantlee5 libkf5kaddressbookimportexport5 libkf5kcmutils5 libkf5kdcraw5 libkf5kdegames7 libkf5kdelibs4support5 libkf5kdelibs4support5-bin libkf5kdgantt2-5 libkf5kexiv2-15.0.0 libkf5khtml-bin libkf5khtml5 libkf5kiocore5 libkf5kiofilewidgets5 libkf5kiogui5 libkf5kiowidgets5 libkf5kipi-bin libkf5kipi31.0.0 libkf5kipi32.0.0 libkf5kirigami2-5 libkf5kmanagesieve5 libkf5kontactinterface5 libkf5krosscore5 libkf5krossui5 libkf5ksieveui5 libkf5ldap5 libkf5libkdepim-plugins libkf5libkdepim5abi1 libkf5libkdepimakonadi5 libkf5libkleo5 libkf5libkleo5abi1 libkf5mailtransport5abi2 libkf5mailtransportakonadi5 libkf5messagecore5abi2 libkf5messagelist5abi1 libkf5messageviewer-plugins libkf5messageviewer5abi3 libkf5mimetreeparser5abi1 libkf5newstuff5 libkf5newstuffcore5 libkf5notifications5 libkf5notifyconfig5 libkf5parts-plugins libkf5parts5 libkf5people5 libkf5peoplewidgets5 libkf5pimcommon-plugins libkf5pimcommon5abi2 libkf5pimcommonakonadi5 libkf5pimtextedit5abi1 libkf5pimtextedit5abi2 libkf5plasma5 libkf5plasmaquick5 libkf5plotting5 libkf5prison5 libkf5purpose-bin libkf5purpose5 libkf5quickaddons5 libkf5runner5 libkf5sane5 libkf5screen-bin libkf5screen7 libkf5service-bin libkf5service5 libkf5solid5 libkf5sonnetui5 libkf5style5 libkf5su-bin libkf5su5 libkf5syndication5 libkf5syntaxhighlighting5 libkf5sysguard-bin libkf5texteditor5 libkf5textwidgets5 libkf5tnef5 libkf5wallet-bin libkf5wallet5 libkf5waylandclient5 libkf5waylandserver5 libkf5webengineviewer5abi3 libkf5webkit5 libkf5widgetsaddons5 libkf5windowsystem5 libkf5xmlgui5 libkf5xmlrpcclient5 libkfontinstui5 libkolab1 libkpmcore7 libkscreenlocker5 libksignalplotter7 libktorrent-l10n libktorrent6 libktpcommoninternals9 libktplogger9 libktpmodels9 libktpotr9 libktpwidgets9 libkubuntu1 libkwalletbackend5-5 libkwin4-effect-builtins1 libkwineffects11 libkwineffects9 libkwinglutils11 libkwinglutils9 libkwinxrenderutils11 libkwinxrenderutils9 libkworkspace5-5 libokteta2gui2 libokular5core7 liboxygenstyle5-5 liboxygenstyleconfig5-5 libphonon4qt5-4 libpolkit-qt5-1-1 libpoppler-qt5-1 libpowerdevilcore2 libprocessui7 libqapt3-runtime libqgsttools-p1 libqmobipocket2 libqt5designer5 libqt5designercomponents5 libqt5gui5 libqt5help5 libqt5multimedia5 libqt5multimedia5-plugins libqt5multimediaquick-p5 libqt5multimediawidgets5 libqt5opengl5 libqt5printsupport5 libqt5quick5 libqt5quickcontrols2-5 libqt5quicktemplates2-5 libqt5quickwidgets5 libqt5svg5 libqt5waylandclient5 libqt5waylandcompositor5 libqt5webengine5 libqt5webenginecore5 libqt5webenginewidgets5 libqt5webkit5 libqt5widgets5 libqt5x11extras5 libreoffice-avmedia-backend-gstreamer libreoffice-kde libscim8v5 libsdl2-2.0-0 libtaskmanager6 libwayland-egl1-mesa libweather-ion7 libwebkit2gtk-4.0-37 libwebkit2gtk-4.0-37-gtk2 mednaffe milou okteta okular partitionmanager pdf-presenter-console phonon4qt5 phonon4qt5-backend-gstreamer pim-sieve-editor pinentry-qt plasma-dataengines-addons plasma-desktop plasma-discover plasma-framework plasma-integration plasma-nm plasma-pa plasma-runner-telepathy-contact plasma-runners-addons plasma-wallpapers-addons plasma-widgets-addons plasma-workspace polkit-kde-agent-1 powerdevil print-manager python3-pykde4 python3-pyqt5 qapt-batch qapt-deb-installer qml-module-org-kde-activities qml-module-org-kde-draganddrop qml-module-org-kde-extensionplugin qml-module-org-kde-kcm qml-module-org-kde-kconfig qml-module-org-kde-kcoreaddons qml-module-org-kde-kholidays qml-module-org-kde-kio qml-module-org-kde-kirigami qml-module-org-kde-kirigami2 qml-module-org-kde-kquickcontrols qml-module-org-kde-kquickcontrolsaddons qml-module-org-kde-kwindowsystem qml-module-org-kde-people qml-module-org-kde-purpose qml-module-org-kde-qqc2desktopstyle qml-module-org-kde-runnermodel qml-module-org-kde-solid qml-module-org-kde-telepathy qml-module-qtgraphicaleffects qml-module-qtmultimedia qml-module-qtquick-controls qml-module-qtquick-controls-styles-breeze qml-module-qtquick-controls2 qml-module-qtquick-dialogs qml-module-qtquick-layouts qml-module-qtquick-privatewidgets qml-module-qtquick-templates2 qml-module-qtquick-virtualkeyboard qml-module-qtquick-window2 qml-module-qtquick2 qml-module-qtwebengine qml-module-qtwebkit qml-module-ubuntu-onlineaccounts qt5-gtk-platformtheme qt5-image-formats-plugins qtdeclarative5-qtquick2-plugin qtspeech5-flite-plugin qttools5-dev-tools qtvirtualkeyboard-plugin qtwayland5 rekonq sddm sddm-theme-breeze signon-kwallet-extension signon-ui signon-ui-x11 skanlite software-properties-kde system-config-printer system-config-printer-common systemsettings thunderbird ubuntu-release-upgrader-qt user-manager vlc vlc-plugin-notify vlc-plugin-qt vlc-plugin-skins2 vlc-plugin-video-output wireshark wireshark-qt xorg xserver-xorg xserver-xorg-core xserver-xorg-input-all xserver-xorg-input-libinput xserver-xorg-input-synaptics xserver-xorg-input-wacom xserver-xorg-video-all xserver-xorg-video-amdgpu xserver-xorg-video-ati xserver-xorg-video-fbdev xserver-xorg-video-intel xserver-xorg-video-nouveau xserver-xorg-video-qxl xserver-xorg-video-radeon xserver-xorg-video-vesa xserver-xorg-video-vmware zenity The following NEW packages will be installed: libportaudio2 0 upgraded, 1 newly installed, 429 to remove and 1 not upgraded. Need to get 64.6 kB of archives. After this operation, 1,348 MB disk space will be freed. """ In any case, things seem fine now. Sorry to raise an issue about a transient problem that worked itself out, but it's hard to tell ahead of time whether something is very specific to certain video hardware (and might not be noticed if no Kubuntu developers are using the same hardware), or whether it's a widespread issue that will be noticed and fixed quickly. Thanks again, MMR... On 2018-02-23 14:36, Rik Mills wrote: > Investigating on a Kabylake Intel with a live system. > > Removing libegl1 libglvnd0 seems to get me go back to full hardware > driven opengl, whereas with them it was llvmpipe only. > > Those are new packages being pulled in by kinfocentre building against > new things in -proposed pocket. > > Can you confirm that removing them solves your issue? -- kubuntu-devel mailing list kubuntu-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/kubuntu-devel