[meta-freescale] No HDMI video on imx6qsabresd with dizzy

Daiane Angolini daiane.list at gmail.com
Thu Nov 13 12:50:56 PST 2014

On Thu, Nov 13, 2014 at 5:34 PM, Nikolay Dimitrov <picmaster at mail.bg> wrote:
> Hi guys,
> Thanks to Fabio the HDMI is now working. Here's how:
> 1. Disabled HDMI support in u-boot-fsl (actually disabled all video-
> related support, as it was easier/faster).
> 2. Added the usual video configuration to "mmcarg" env-var:
> video=mxcfb0:dev=hdmi,1280x720M at 60,if=RGB24
> 3. Booted the board (had to set mmcdev to 0 as I boot from SD2).
> 4. Observed that Xorg was running on the HDMI screen.
> 5. Played video via gstreamer and observed it's rendering on the screen
> without issues.
> After discussion with Andreas, I tested the following resolutions and
> they worked OK:
> - 640x480
> - 800x600
> - 1024x768
> - 1280x720
> (just don't have the time to test more as these were OK for my tests)
> @Daiane: I checked the description for bug #6703, but I don't observe
> the issue here. I left my HDMI cable connected all the time, and it
> still works. I even power-cycled the board to make sure that the HDMI
> hardware is not left initialized from a previous boot. My understanding
> is that the reason it works is Fabio's suggestion to disable U-Boot
> HDMI support.

You are right, Nikolay, and if you see [1], the second comment, I
suggest turning of HDMI as a workaround, but using LVDS instead.

However, I got confused when you said you have never reproduced the
error regarding plug/unplug the cable.
Do you mean you was not able to reproduce it *after* get it fixed, or
you have never been able?

I would like to have you updating the bug with your workaround. Could
you, please leave a comment there with your how-to?

[1] https://bugzilla.yoctoproject.org/show_bug.cgi?id=6703#c2

> Thanks to everyone for the constructive discussion.
> Kind regards,
> Nikolay

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