QT-Eglfs not working on x86_64 debian testing

Erdbeergulasch

Hi,

after building QT with opengl (following this howto: http://qt-project.org/wiki/Native_Build_of_Qt5_on_a_Raspberry_Pi)

and compiling one of the examples, i get the following error ("QXcbConnection: Could not connect to display")
if i run the example from a shell without x-server
on a shell with x-server this example is fully working, but i don't think, that eglfs is working, the qt-application uses only x11.

the reason is, that i want to run my own qt-applications without x-server applications i only want to run them directly with eglfs.

i am running a debian testing (with 64bit)

here are the steps, i did to compile qt:
git clone git://gitorious.org/qt/qt5.git
cd qt5
./init-repository

Tweak the qt_base configure

change the following lines in /usr/local/src/qt5/qtbase/configure

flags for libdbus-1

QT_CFLAGS_DBUS="-I/usr/include/dbus-1.0/ -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include/"
QT_LIBS_DBUS=-ldbus-1

flags for Glib (X11 only)

QT_CFLAGS_GLIB="-I/usr/include/glib-2.0/ -I/usr/lib/x86_64-linux-gnu/glib-2.0/include/"
QT_LIBS_GLIB=-lglib-2.0

and add the following lines in /usr/local/src/qt5/qtbase/configure
QT_CFLAGS_PULSEAUDIO="-I/usr/include/glib-2.0/ -I/usr/lib/x86_64-linux-gnu/glib-2.0/include/"
QT_LIBS_PULSEAUDIO="-lpulse -lpulse-mainloop-glib"

flags for GStreamer (X11 only)

QT_CFLAGS_GSTREAMER="-I/usr/include/gstreamer-0.10/ -I/usr/include/glib-2.0/ -I/usr/lib/x86_64-linux-gnu/glib-2.0/include/ -I/usr/include/libxml2/"
QT_LIBS_GSTREAMER=

add the following to the line, where QT_CFLAGS_FONTCONFIG is in the else-case:
QT_CFLAGS_FONTCONFIG=-I/usr/include/freetype2/

Run ./configure
./configure -v -opengl es2 -opensource -confirm-license -optimized-qmake -reduce-exports -release -qt-pcre -make libs -prefix /usr/local/qt5 &> output

here i saw EGLFS ..... yes.

Building:
make -j 5 &> output_make

Install:
make install &> output_make_install

SGaist

Hi and welcome to devnet,

If I saw things correctly you probably have both XCB and eglfs support and XCB is picked up by default. Try calling your app like this

@myapp -platform eglfs@

Hope it helps

Erdbeergulasch

hi, thanks for the reply,

am i right, if you mean that the application (for example one of the qt-examples), i compiled with the eglfs-enabled qmake and make.
should be started with this the params "-platform eglfs".

because if i do this, i get the following errors:
libEGL warning: DRI2: xcb_connect failed
libEGL warning: DRI2: xcb_connect failed
Could not initialize egl display

i tried it on the analogclock-example.

thanks

SGaist

It still tries to connect to xcb…

To ensure it doesn't, rebuild your Qt with -no-xcb when your configure