[GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U2)

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mdrjr
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[GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U2)

Unread post by mdrjr » Mon Dec 09, 2013 4:57 am

Hello,
Some people are having problems with the new exynos_drm drivers. So I decided to make this thread to explain how to work-around those.

First, I've patched the drivers to always fallback into DVI mode, in case the EDID probe from your screen fails it will default to DVI mode. Why? Because DVI is the safest option.
In case you are using an adapter or something alike it will probably fail at delivery the proper EDID. So DVI is the safest mode.

Those are the new boot.scr files. Let me explain.

There are two kinds of boot.scr's now, one for properly parsed EDID's and one for the case where your screen fails to delivery the proper EDID.
Note that the driver will always try to do 1024x768 DVI(VGA) mode. if something fails.

boot-1024x768-noedid.scr -
This will fix 1024x768 DVI(VGA) mode regardless of what your screen tell us.

boot-720p-edid.scr -
This will set 720P mode using HDMI (your screen needs to provide edid's here, its used just to fix a lower resolution)

boot-1080p-edid.scr
This will set 1080P mode using HDMI (your screen needs to provide edid's here, its used just to fix a lower resolution)

boot-720p-noedid.scr
This will set 720P mode using DVI (It doesn't care about EDID anymore, it will fix 720P using DVI Mode)

boot-1080p-noedid.scr
This will set 1080P mode using DVI (It doesn't care about EDID anymore, it will fix 1080P using DVI Mode

boot-auto_edid.scr
This will configure the drivers based on what your screen returns back.


Also, apart from those, some screens with other resolutions them TV Modes should work now.
We could test inside the company a old LCD Screen with 1280x1024 resolution. And it works (Scaling 16:9 to 4:3).

I hope this cover some people doubts on how to use it.
Let me know here on this thread if you need anything or if something is broken for you :)

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by LiquidAcid » Wed Dec 18, 2013 3:31 am

It would be helpful if you told people where to actually find those bootscripts.

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by mdrjr » Wed Dec 18, 2013 3:34 am

LiquidAcid wrote:It would be helpful if you told people where to actually find those bootscripts.
On our default image.. its /media/boot
Or if you want just the files: http://builder.mdrjr.net/tools/boot.scr_ubuntu.tar

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by LiquidAcid » Wed Dec 18, 2013 9:01 am

Why are these not provided through odroid-3.8.y/tools/hardkernel, like the bootscripts before?

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by mdrjr » Wed Dec 18, 2013 9:12 am

LiquidAcid wrote:Why are these not provided through odroid-3.8.y/tools/hardkernel, like the bootscripts before?
I'll probably update the ones there

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by LiquidAcid » Wed Dec 18, 2013 9:15 am

Thanks!

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by LiquidAcid » Thu Mar 06, 2014 8:14 am

mdrjr wrote:I'll probably update the ones there
The files are still missing.

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by mdrjr » Thu Mar 06, 2014 8:23 am

And they will never be there. As its now part of actual kernel documentation and not something custom made.
So if you want to change it refer to the kernel documentation.

I'll remove the old scripts.

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by LiquidAcid » Thu Mar 06, 2014 8:30 am

mdrjr wrote:I'll remove the old scripts.
That's a start.

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by naban » Thu Jul 30, 2015 9:39 pm

I have an Odroid U3,

my Problem is that i am not able to run it on my pc Monitor or on my TV. I get no signal.

on the TV I have just the Micro-HDMI to HDMI cable
and on the PC-TFT
I have the Micro-HDMI to HDMI and a converter from HDMI to DVI

if I put the power and the Micro HDMI cable in the unit it seems to start. I get the red light shining and the blue-light begins to blink after a little time.

I tried the latest versions which I could find on "Hardkernel.com" this are:
the Ubuntu 14.04.2 OS Image for U2/U3/X/X2 20150224
and the ODROID-U3/U2/X/X2 Android 4.4.4 Alpha 4.5 from 20141209

I also tried other TFT-Screens and another HDMI cable but with the same result.

I want to use it on my TFT via the DVI input as an pc for internet-surfing, put i would also be glad to get a screen on my TV so that I can use the U3 at least!

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Re: [GUIDE] Resolutions on the new Exynos DRM driver (X/X2/U

Unread post by mdrjr » Thu Jul 30, 2015 10:28 pm

Create your own thread. So we can help.

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