I hope after 10 years with kubuntu I'm not trying to mix anything... This is my sources list:
deb http://archive.ubuntu.com/ubuntu/ bionic main restricted deb http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted deb http://archive.ubuntu.com/ubuntu/ bionic universe deb http://archive.ubuntu.com/ubuntu/ bionic-updates universe deb http://archive.ubuntu.com/ubuntu/ bionic multiverse deb http://archive.ubuntu.com/ubuntu/ bionic-updates multiverse deb http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse deb http://archive.canonical.com/ubuntu bionic partner deb http://security.ubuntu.com/ubuntu bionic-security main restricted deb http://security.ubuntu.com/ubuntu bionic-security universe deb http://security.ubuntu.com/ubuntu bionic-security multiverse What I did was just a regular apt update && apt upgrade. At some point I have lost my graphical effects in KDE I suppose you are still supporting apt upgrade, aren't you? :-D So to summarize - there is a bug in package which is currently in Ubuntu repository. With following packages: Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-================-=============-=============-===================================== ii libegl1:amd64 0.2.999+git20 amd64 Vendor neutral GL dispatch library -- ii libegl1-mesa:amd 17.3.3-0ubunt amd64 free implementation of the EGL API -- ii libegl1-mesa-dev 17.3.3-0ubunt amd64 free implementation of the EGL API -- un libegl1-x11 <none> <none> (no description available) My kubuntu is not using hardware accelerated graphics. In /var/log/Xorg.0.log file, I can see this: [ 17324.106] (II) AIGLX: Screen 0 is not DRI2 capable [ 17324.106] (EE) AIGLX: reverting to software rendering Using those, I have just googled for some solution and found that when I install those two .deb files: libegl-mesa0_18.0.0~rc4-1_amd64.deb libgbm1_18.0.0~rc4-1_amd64.deb Everything goes back to normal. So something is wrong, but I can't go behind that point to say what exactly. ** Changed in: mesa (Ubuntu) Status: Invalid => New -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1752343 Title: Problem with DRI2 and GLX - bionic 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1752343/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
