topic Re: Issues with U-Boot 2014.01 Splashscreen/Linux Framebuffer in i.MX Processors

Issues with U-Boot 2014.01 Splashscreen/Linux Framebuffer

mahi — Fri, 14 Nov 2014 10:21:34 GMT

Hi,

i have some problems with enabling framebuffer support at the kernel command line with U-Boot 2014.01 (with the nice splash screen) on an i.MX6Q Sabre SD board with yocto Linux.

When changing

mmcargs=setenv bootargs console=\${console},\${baudrate} root=\${mmcroot}

mmcargs=setenv bootargs console=\${console},\${baudrate} root=\${mmcroot} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32

the Linux kernel stops at "Starting kernel..." if a monitor is connected to HDMI.

If the HDMI is unconnected, the kernel starts without problems.

By now I use a patch to remove the framebuffer related defines from [u-boot-dir]/include/configs/mx6sabresd.h, but cannot be the final solution.

Does anyone else have similar issues?

Bye,

Martin

Re: Issues with U-Boot 2014.01 Splashscreen/Linux Framebuffer

fabio_estevam — Fri, 14 Nov 2014 10:34:07 GMT

Hi Marcel,

This is a kernel issue.

Could you please try the proposed fix in this thread?

i.mx6Q custom board, keep interrupt and hang.

Please let us know if this solves the issue.

Re: Issues with U-Boot 2014.01 Splashscreen/Linux Framebuffer

mahi — Fri, 14 Nov 2014 11:19:17 GMT

I'll give it a try.

But the linked thread describes a different problem (freeze with HDMI disconnected - in my case the kernel freezes with HDMI connected).

EDIT: Did not work...

EDIT2: It is a known bug: https://bugzilla.yoctoproject.org/show_bug.cgi?id=6703

Re: Issues with U-Boot 2014.01 Splashscreen/Linux Framebuffer

SergioSolis — Mon, 17 Nov 2014 17:21:42 GMT

Hello Martin,

Thank you for posting the link to the bug post!