- Ask a related questionWhat is a related question?A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
SDK ：ti-processor-sdk-linux-rt-am335x-evm-07.03.00.005
hardware：beaglebone black BBVIEW+4.3inch LCD
when booting， the LCD worked like this:
the Matrix gui load failed ， the I run the QT examples:
root@am335x-evm:/usr/share/examples/gui/analogclock# sudo ./analogclock -platform eglfs
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
Failed to move cursor on screen LVDS1: -13
qt.qpa.input: xkbcommon not available, not performing key mapping
Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is cre.
Could not set DRM mode for screen LVDS1 (Permission denied)
Could not queue DRM page flip on screen LVDS1 (Permission denied)
Could not queue DRM page flip on screen LVDS1 (Permission denied)
Could not queue DRM page flip on screen LVDS1 (Permission denied)
Could not queue DRM page flip on screen LVDS1 (Permission denied)
Could not queue DRM page flip on screen LVDS1 (Permission denied)
how to solve this DRM problem ？
