imx6q-sabresd framebuffer CCW rotate (180) not working

[arulpandiyan_va]

 

We are using prebuilt binaries of imx6q-sabresd and expecting the framebuffer to rotate 180 degrees on the HDMI display it was not working as expected.

console=ttymxc0,115200 root=/dev/mmcblk1p2 rootwait rw video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,rotate=3

Display rotation was not working on either of the below releases.

Even echo 3 > /sys/class/graphics/fb0/rotate was also not helping

Even echo 1 > /sys/class/graphics/fb0/rotate was rotating to 180 degree but it was flipped

LF_v5.10.72-2.2.0_images_IMX6QPDLSOLOX.zip 
LF_v5.15.32-2.0.0_images_IMX6QPDLSOLOX.zip

[brian14 · Accepted solution]

Hi @arulpandiyan_va ,

Please accept my apologies for the delayed reply.

Based on the information you provided it seems you could use the xrandr command to display rotate.

You will find more information in chapter 6.2 XRandR.

I hope this information will be helpful.

Best regards, Brian.

[arulpandiyan_va]

Thanks for the response, @Brian,
Below command works well for my requirements

root@imx6qsabresd:~# export DISPLAY=:0.0
root@imx6qsabresd:~# xrandr -s 1024x768
root@imx6qsabresd:~# xrandr -o inverted