same here 17.04 when using Xmir, without Xmir the apps seems to start logs from supertux2 (sdl)
mar 24 12:30:15 pixel-desktop systemd[3611]: Starting ubuntu-app-launch--application-legacy--supertux2--1490351415016768.service... ---- mar 24 12:30:16 pixel-desktop xmir-helper[6363]: Cannot connect to server socket err = No such file or directory mar 24 12:30:16 pixel-desktop xmir-helper[6363]: Cannot connect to server request channel mar 24 12:30:16 pixel-desktop xmir-helper[6363]: jack server is not running or cannot be started mar 24 12:30:16 pixel-desktop xmir-helper[6363]: JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295, skipping unlock mar 24 12:30:45 pixel-desktop xmir-helper[6363]: XIO: fatal IO error 4 (Interrupted system call) on X server ":0" mar 24 12:30:45 pixel-desktop xmir-helper[6363]: after 932 requests (932 known processed) with 0 events remaining. mar 24 12:30:45 pixel-desktop xmir-helper[6363]: AL lib: (EE) alc_cleanup: 1 device not closed mar 24 12:30:45 pixel-desktop systemd[3611]: Stopped ubuntu-app-launch--application-legacy--supertux2--1490351415016768.service. the app seems to start? i hear the sound but i don't see the game only the spinning loader on a black window -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1675364 Title: [regression] GTK and KDE apps fail to start under Unity8 (without gnome-session running) To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1675364/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs