Yocto pre build image core-image-sato-sdk (20150303160855) Kernel hangs with HDMI video enable on SabreSD

[ricktseng]

Hi All ,

I use pre-build image : core-image-sato-sdk-imx6qsabresd-20150303160855.rootfs.sdcard on iMX6QSabreSD. I stop the u - boot and modify mmcargs ( editenv mmcargs ) to add this :

video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24

to enable the HDMI video.

After reboot , the Kernel hangs. If I remove the above modification , the board will boot but no HDMI video.

Anyone knows how to fix it ?

P.S. The link for pre-build image is :

http://autobuilder.yoctoproject.org/pub/releases/CURRENT/machines/imx6qsabresd/

[ricktseng]

Hi All ,

I found this link :

The HDMI cause Kernel hangs. If remove cable it is OK.

Please see this link :

https://bugzilla.yoctoproject.org/show_bug.cgi?id=6703

I remove the HDMI cable and the Kernel boot up OK. After I re-install the HDMI cable I can see the HDMI display.

I think the above link is correct. If the HDMI cable is connected , some how the Kernel will hang.

Rick

[igorpadykov]

Hi Rick

you are right, hanging may be caused by this kernel bug.

Best regards

igor