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Unable to allocate framebuffer fsl-image-qt5

Question asked by Eugene Volkov on Apr 25, 2015
Latest reply on Apr 29, 2015 by Eugene Volkov

Hi, all!

i have problem with HDMI output in fsl-image-qt5 BSP 3.10.53.

During load u-boot and linux,

on the HDMI output i can see logo -that indicating that HDIM, u-boot and kernel seting is good.

 

But, after starting Xserver, screen on HDMI monitor turns black, i can see cursor on thel left side.

 

Starting Xserver

Starting system message bus: dbus.

Starting Connection Manager

Starting Dropbear SSH server: dropbear.

Starting rpcbind daemon...

mxc_sdc_fb fb.18: Unable to allocate framebuffer memory

detected fb_set_par error, error code: -12

done.

 

For some reason, no memory is allocated for frame buffer.

 

i find in Freescale Yocto Project User's Guide this recommendations:

 

"To run these, after booting up Linux on your device, tell Qt5 which graphics to use but setting the environment variable

below. See Section "Qt5" in the i.MX Linux User's Guide for the information on the graphics for different graphical

backends."


How do I set the parameters for frame buffer?

Help me!!! I have this problem for over a week!


 

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