(apologies for previous message without subject line.) I am attempting to update a working yocto build system with imx6 dual plus CPU running the following kernel 4.14 with etnaviv libmesa 17.3.0 libdrm 2.4.85 qt 5.9.2. (qt 5.10.x also works)
I would like to update to sumo yocto with kernel 4.16 with etnaviv libmesa 17.3.8 libdrm 2.4.91 qt 5.11 This is an embedded device without X11 installed. When I run Qt5_CinematicExperience -platform eglfs I get an error "Could not queue DRM page flip on screen LVDS1 (Invalid argument)" I get the same error with my custom application. If I run with -platform linuxfb the application runs correctly. I have swapped out libdrm, the kernel and libmesa version and find that the problem seems to follow my upgrade to qt 5.11. Said another way, swapping the components listed above leads me to believe the problem is with the qt upgrade. Running qt 5.11 with the other originally working components does not work. Looking at the configure log for qtbase (5.11) it looks like all the same opengl options are configured as were configured in 5.9 and 5.10. See below. qt 5.11 configure log details. This qt does not work. QPA backends: 1185 DirectFB ............................... no 1186 EGLFS .................................. yes 1187 EGLFS details: 1188 EGLFS OpenWFD ........................ no 1189 EGLFS i.Mx6 .......................... no 1190 EGLFS i.Mx6 Wayland .................. no 1191 EGLFS RCAR ........................... no 1192 EGLFS EGLDevice ...................... yes 1193 EGLFS GBM ............................ yes 1194 EGLFS VSP2 ........................... no 1195 EGLFS Mali ........................... no 1196 EGLFS Raspberry Pi ................... no 1197 EGL on X11 ........................... no 1198 LinuxFB ................................ yes 1199 VNC .................................... yes 1200 Mir client ............................. no qt 5.10.1 working configure section QPA backends: 1173 DirectFB ............................... no 1174 EGLFS .................................. yes 1175 EGLFS details: 1176 EGLFS OpenWFD ........................ no 1177 EGLFS i.Mx6 .......................... no 1178 EGLFS i.Mx6 Wayland .................. no 1179 EGLFS RCAR ........................... no 1180 EGLFS EGLDevice ...................... yes 1181 EGLFS GBM ............................ yes 1182 EGLFS Mali ........................... no 1183 EGLFS Raspberry Pi ................... no 1184 EGL on X11 ........................... no 1185 LinuxFB ................................ yes 1186 VNC .................................... yes 1187 Mir client ............................. no I would appreciate any help with this issue. Thank you, Dexter
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