Qt5 demos not working after kernel version changes

[narasimhuluorug]

Hello,

Currently I am working on imx6-yocto qt5 porting on phytec's phyflex imx6 target. Here I have changed 3.19 kernel to 3.14 kernel for some customization purpose, but qt5 demos are not working when i load 3.14 kernel. I am not using inside yocto project kernel except rootfs.Please can give any information in this case.

*******************************************************************************************************

root@phyboard-subra-imx6-1:~# qt5demo-starter

QEglFSImx6Hooks will set environment variable FB_MULTI_BUFFER=2 to enable double buffering and vsync.

If this is not desired, you can override this via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1

[     1] HAL user version 5.0.11 build 19959 Aug  6 2014 03:02:58

[     2] HAL kernel version 5.0.11 build 25762

Segmentation fault

root@phyboard-subra-imx6-1:~#

********************************************************************************************************

Thanks & Regards,

Narasimha

[narasimhuluorug]

Hello,

Currently I am facing this the below issue. Please anuggest any inputs.

root@imx6qsabresd:~#

root@imx6qsabresd:~#

ocks@imx6qsabresd:~# /usr/share/qt5/examples/widgets/animation/moveblocks/moveblo

Qt Warning: Could not find a location of the system's Compose files. Consider setting the QTCOMPOSE environment variable.

Qt Warning: Could not find a location of the system's Compose files. Consider setting the QTCOMPOSE environment variable.

Unable to find an X11 visual which matches EGL config 1

Thanks & Regards,

Narasimha

[jimmychan]

Do you mean you build the kernel 3.14 not using yocto and then build rootfs in yocto with different kernel version?

[narasimhuluorug]

Hi jimmychan,

Thanks for your reply. Here actually for the kernel BSP customization purpose only builded outside. Can you guide me how to switch the kernel in yocto

BSP to "imx_3.14.28_1.0.0_ga" branch which will supports dual display also.

Thanks & Regards,

Narasimha

[jimmychan]

Attached is the Yocto User guide. In section 5.6, there is a 'repo init' command to download the kernel source code. The -b <branch name> option used for downloading the kernel from different branch. For your information, here is the list of Branch of different i.MX kernel version. linux-2.6-imx.git - Freescale i.MX Linux Tree