@Francisco Perhaps it wold be possible to move non GUI code out from application and create gui one connecting with backend.
@Tony Sorry using word "service" was unfortunate. The app is just started from systemd - that's all. It is GUI application using OpenGL, Qt Quick etc. I noticed that it works ok with wayland headless-backend.so but by default this backend does not render anything. App works OK on odroid-c2(mali-fbdev) however odroid there are some parameters passed from uboot to kernel that ensures HDMI reports as if it is always connected. 2018-06-18 14:58 GMT+02:00 Tony Rietwyk <t...@rightsoft.com.au>: > Hi Tomasz, > > I think in Windows, it simply is not possible for a service app to also > run in desktop - they have separate desktops. The usual solution is to > move data and commands between the service and desktop app via some form of > inter process communication - TCP, pipes, mailslots, etc. > > Can you use the same techniques in your app? You should be able to easily > split it, depending on how much data the desktop needs? > > Hope that helps, Tony > > On 18/06/2018 9:26 PM, Tomasz Olszak wrote: > > Hello, > > Has anyone of you needed to handle following use case? > > > 1. Linux > 2. Full screen GUI app - fast as much as possible so no X, considered > eglfs over drm and wayland > 3. It starts as a service without screen > 4. Screen can be connected at any time - app should be visible on screen > > 3 seems currently impossible with Qt 5.10 (is there a point updating it to > 5.11). > > What I tried so far: > 1. Eglfs app works ok with screen connected > 2. Eglfs crashes when no screen connected in egl qpa > 3. Eglfs work ok when I add in eglfs configuration file ( > QT_QPA_EGLFS_KMS_CONFIG) certain modeline string as mode. However when > screen is connected there is no QGuiApplication::screenAdded signal so I > can't show application on different screen. > 4. on Qt Wayland app exits with "Running on a compositor with no screens > is not supported". It comes from QWaylandIntegration::initialize() and > compositor is weston > > Any ideas how to approach such case? > > > > > > > > _______________________________________________ > Interest mailing > listInterest@qt-project.orghttp://lists.qt-project.org/mailman/listinfo/interest > > > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest > >
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