EGLFS Full Screen issue on Raspberry Pi 4 Desktop
Unsolved
Mobile and Embedded
-
Hi,
I've cross-compiled Qt 5.15.0 using the instructions provided here:
https://www.interelectronix.com/de/qt-auf-dem-raspberry-pi-4.html (with the help of Google Translate)When I compiled the example "alarms" app and copied it to the Raspberry Pi, it ran but it was windowed. I was using it with the desktop enabled. When I configured the Pi to boot straight to CLI, the issue was gone and it ran full screen as I wanted.
To try get it to work while in Desktop mode, I booted back into desktop and ran it with the eglfs flag i.e.:./alarms -platform eglfsWhen I did this, it didn't run and I got the following errors on the terminal
Failed to move cursor on screen HDMI1: -13 Failed to move cursor on screen HDMI1: -13 Could not set cursor on screen HDMI1: -13 failed to export dumb buffer: Permission denied Failed to create scanout resource failed to export dumb buffer: Permission denied Failed to create scanout resource QEGLPlatformContext: eglSwapBuffers failed: 3003 Could not lock GBM surface front buffer!If it helps, this was the output of my config when I was cross-compiling Qt 5.15:
Build options: Mode ................................... release Optimize release build for size ........ no Building shared libraries .............. yes Using C standard ....................... C11 Using C++ standard ..................... C++17 Using ccache ........................... no Using new DTAGS ........................ yes Relocatable ............................ yes Using precompiled headers .............. yes Using LTCG ............................. no Target compiler supports: NEON ................................. yes Build parts ............................ libs Qt modules and options: Qt Concurrent .......................... yes Qt D-Bus ............................... yes Qt D-Bus directly linked to libdbus .... yes Qt Gui ................................. yes Qt Network ............................. yes Qt Sql ................................. yes Qt Testlib ............................. yes Qt Widgets ............................. yes Qt Xml ................................. yes Support enabled for: Using pkg-config ....................... yes udev ................................... yes Using system zlib ...................... yes Zstandard support ...................... no Qt Core: DoubleConversion ....................... yes Using system DoubleConversion ........ yes GLib ................................... yes iconv .................................. no ICU .................................... yes Built-in copy of the MIME database ..... yes Tracing backend ........................ <none> Logging backends: journald ............................. no syslog ............................... no slog2 ................................ no PCRE2 .................................. yes Using system PCRE2 ................... yes Qt Network: getifaddrs() ........................... yes IPv6 ifname ............................ yes libproxy ............................... no Linux AF_NETLINK ....................... yes OpenSSL ................................ yes Qt directly linked to OpenSSL ........ no OpenSSL 1.1 ............................ yes DTLS ................................... yes OCSP-stapling .......................... yes SCTP ................................... no Use system proxies ..................... yes GSSAPI ................................. no Qt Gui: Accessibility .......................... yes FreeType ............................... yes Using system FreeType ................ yes HarfBuzz ............................... yes Using system HarfBuzz ................ yes Fontconfig ............................. yes Image formats: GIF .................................. yes ICO .................................. yes JPEG ................................. yes Using system libjpeg ............... yes PNG .................................. yes Using system libpng ................ yes Text formats: HtmlParser ........................... yes CssParser ............................ yes OdfWriter ............................ yes MarkdownReader ....................... yes Using system libmd4c ............... no MarkdownWriter ....................... yes EGL .................................... yes OpenVG ................................. no OpenGL: Desktop OpenGL ....................... no OpenGL ES 2.0 ........................ yes OpenGL ES 3.0 ........................ yes OpenGL ES 3.1 ........................ yes OpenGL ES 3.2 ........................ yes Vulkan ................................. yes Session Management ..................... yes Features used by QPA backends: evdev .................................. yes libinput ............................... yes INTEGRITY HID .......................... no mtdev .................................. yes tslib .................................. yes xkbcommon .............................. yes X11 specific: XLib ................................. yes XCB Xlib ............................. yes EGL on X11 ........................... yes xkbcommon-x11 ........................ yes QPA backends: DirectFB ............................... no EGLFS .................................. yes EGLFS details: EGLFS OpenWFD ........................ no EGLFS i.Mx6 .......................... no EGLFS i.Mx6 Wayland .................. no EGLFS RCAR ........................... no EGLFS EGLDevice ...................... yes EGLFS GBM ............................ yes EGLFS VSP2 ........................... no EGLFS Mali ........................... no EGLFS Raspberry Pi ................... no EGLFS X11 ............................ yes LinuxFB ................................ yes VNC .................................... yes XCB: Using system-provided xcb-xinput ..... no Native painting (experimental) ....... no GL integrations: GLX Plugin ......................... no EGL-X11 Plugin ..................... yes Qt Sql: SQL item models ........................ yes Qt Widgets: GTK+ ................................... no Styles ................................. Fusion Windows Qt PrintSupport: CUPS ................................... yes Qt Sql Drivers: DB2 (IBM) .............................. no InterBase .............................. no MySql .................................. no OCI (Oracle) ........................... no ODBC ................................... yes PostgreSQL ............................. yes SQLite2 ................................ no SQLite ................................. yes Using system provided SQLite ......... no TDS (Sybase) ........................... yes Qt Testlib: Tester for item models ................. yes Serial Port: ntddmodm ............................... no Qt SerialBus: Socket CAN ............................. yes Socket CAN FD .......................... yes SerialPort Support ..................... yes Further Image Formats: JasPer ................................. no MNG .................................... no TIFF ................................... yes Using system libtiff ................. yes WEBP ................................... yes Using system libwebp ................. yes Qt QML: QML network support .................... yes QML debugging and profiling support .... yes QML just-in-time compiler .............. yes QML sequence object .................... yes QML XML http request ................... yes QML Locale ............................. yes Qt QML Models: QML list model ......................... yes QML delegate model ..................... yes Qt Quick: Direct3D 12 ............................ no AnimatedImage item ..................... yes Canvas item ............................ yes Support for Qt Quick Designer .......... yes Flipable item .......................... yes GridView item .......................... yes ListView item .......................... yes TableView item ......................... yes Path support ........................... yes PathView item .......................... yes Positioner items ....................... yes Repeater item .......................... yes ShaderEffect item ...................... yes Sprite item ............................ yes QtQuick3D: Assimp ................................. yes System Assimp .......................... no Qt Scxml: ECMAScript data model for QtScxml ...... yes Qt Gamepad: SDL2 ................................... no Qt 3D: Assimp ................................. yes System Assimp .......................... no Output Qt3D GL traces .................. no Use SSE2 instructions .................. no Use AVX2 instructions .................. no Aspects: Render aspect ........................ yes Input aspect ......................... yes Logic aspect ......................... yes Animation aspect ..................... yes Extras aspect ........................ yes Qt 3D Renderers: OpenGL Renderer ........................ yes RHI Renderer ........................... no Qt 3D GeometryLoaders: Autodesk FBX ........................... no Qt Bluetooth: BlueZ .................................. yes BlueZ Low Energy ....................... yes Linux Crypto API ....................... yes Native Win32 Bluetooth ................. no WinRT Bluetooth API (desktop & UWP) .... no WinRT advanced bluetooth low energy API (desktop & UWP) . no Qt Sensors: sensorfw ............................... no Qt Quick Controls 2: Styles ................................. Default Fusion Imagine Material Universal Qt Quick Templates 2: Hover support .......................... yes Multi-touch support .................... yes Qt Positioning: Gypsy GPS Daemon ....................... no WinRT Geolocation API .................. no Qt Location: Qt.labs.location experimental QML plugin . yes Geoservice plugins: OpenStreetMap ........................ yes HERE ................................. yes Esri ................................. yes Mapbox ............................... yes MapboxGL ............................. yes Itemsoverlay ......................... yes QtXmlPatterns: XML schema support ..................... yes Qt Multimedia: ALSA ................................... yes GStreamer 1.0 .......................... yes GStreamer 0.10 ......................... no Video for Linux ........................ yes OpenAL ................................. yes PulseAudio ............................. yes Resource Policy (libresourceqt5) ....... no Windows Audio Services ................. no DirectShow ............................. no Windows Media Foundation ............... no Qt TextToSpeech: Flite .................................. no Flite with ALSA ........................ no Speech Dispatcher ...................... no Qt Tools: Qt Assistant ........................... yes Qt Designer ............................ yes Qt Distance Field Generator ............ yes kmap2qmap .............................. yes Qt Linguist ............................ yes Mac Deployment Tool .................... no makeqpf ................................ yes pixeltool .............................. yes qdbus .................................. yes qev .................................... yes Qt Attributions Scanner ................ yes qtdiag ................................. yes qtpaths ................................ yes qtplugininfo ........................... yes Windows deployment tool ................ no WinRT Runner Tool ...................... no Qt Tools: QDoc ................................... noAny solution to this?
Thanks!
-
@cosmonaut65 said in EGLFS Full Screen issue on Raspberry Pi 4 Desktop:
To try get it to work while in Desktop mode, I booted back into desktop and ran it with the eglfs flag i.e.:
I guess the options are mutually exclusive; i.e. if in "Desktop mode" (I assume you have X Window manager running) you can't have a Qt app running full screen with EGLFS backend...
-
@Pablo-J-Rogina said in EGLFS Full Screen issue on Raspberry Pi 4 Desktop:
@cosmonaut65 said in EGLFS Full Screen issue on Raspberry Pi 4 Desktop:
To try get it to work while in Desktop mode, I booted back into desktop and ran it with the eglfs flag i.e.:
I guess the options are mutually exclusive; i.e. if in "Desktop mode" (I assume you have X Window manager running) you can't have a Qt app running full screen with EGLFS backend...
Thanks for the reply!
Perhaps that is so. With previous builds of Qt (5.12/5.10) on an older Raspberry Pi 3, the apps would always run full screen regardless of whether I was booted into the Desktop or CLI. This makes me think it might be possible to configure the app to launch bypassing the X Window Manager, unless the configuration of EGLFS needed for the Raspberry Pi 4 somehow prevents it.
I'm not too familiar with EGLFS or the behaviour of the X Window Manager, so it's only speculation.For the time being, booting into the CLI will have to do I guess
-
@cosmonaut65 said in EGLFS Full Screen issue on Raspberry Pi 4 Desktop:
For the time being, booting into the CLI will have to do I guess
is your issue solved then? if so please don't forget to mark your post as such. Thanks.
