We are using imx6Q sabresd platform for our development with Linux 3.10.17_1.0.0-GA BSP.
We have enabled the HDMI frame buffer (fb2) by below command
$echo 0 > /sys/class/graphics/fb2/blank
We have connected the HDMI monitor and it is working fine.
After that we have removed the HDMI monitor and connected the DVI monitor. At this case, the fb2 mode is changed to 640x480p as expected.
The issue we are facing is, If I connect the HDMI monitor again after removable of DVI monitor, the board is hanging.
The issue is raising at the time of changing the DVI monitor to HDMI monitor only.
In addition, we are not facing this issue in L3.0.35_4.** release based kernel.