[MinnowBoard] HDMI screens - error: no suitable video mode found.

[John Hawley]

You may want to just snag a powered hdmi switch and use it as an
intermediate level shifter, that might resolve your problem and allow
you to verify that things work.

- John

On 05/11/2015 10:49 AM, Julian Lunz wrote:
> Tried with new HDMI cable - same situation, no output on my monitors.
> Are there any ways to check whether the hardware is okay?
> 
> 
> On Thu, 7 May 2015 08:04:26 +0200
> Julian Lunz <git at jlunz.de> wrote:
> 
>> On Wed, 6 May 2015 07:34:37 -0400
>> Bill Traynor <btraynor at gmail.com> wrote:
>>
>>> I had this error earlier last week.  I swapped out the hdmi cable +
>>> micro hdmi adapter I was using for an HDMI cable with an actual
>>> micro-hdmi end and the problem went away.  I'm not sure if the error
>>> was caused by the adapter I was using or the hdmi cable, but
>>> regardless, the purchase of a new cable for $12 solved my problem.
>>
>> True, that sounds like the last bit. 
>> I'm using a hdmi <-> micro-hdmi cable.
>> I'll swap that and let you know, unfortunately I have no other device
>> with micro-hdmi connector to test with.
>>
>>>
>>> On Wed, May 6, 2015 at 7:08 AM, Julian Lunz <git at jlunz.de> wrote:
>>>> Hi,
>>>>
>>>> I'm having trouble getting HDMI to work.
>>>> I tried my setup with three different monitors, but none of them
>>>> works.
>>>>
>>>> I have a Revision A2 board updated to latest Firmware:
>>>> MNW2MAX1.X64.0079.R01.1504081555
>>>>
>>>> I tried Debian 8 and Ubuntu 14.04, both show no output on display,
>>>> neither in UEFI nor after Linux has loaded.
>>>>
>>>> Before handing over to Linux, GRUB displays:
>>>>
>>>> error: no suitable video mode found.
>>>> Booting in blind mode
>>>>
>>>> I can observe the following in kernel message buffer:
>>>>
>>>> i915 0000:00:02.0: No connectors reported connected with modes
>>>> [drm] Cannot find any crtc or sizes - going 1024x768
>>>>
>>>> Please find attached the full boot log from shell to system.
>>>> (Added "console=tty1 console=ttyS0,115200n8" in GRUB)
>>>>
>>>> I'm aware of the known issue with missing level shifters mentioned
>>>> here: http://www.elinux.org/Minnowboard:MinnowMax#Monitors
>>>>
>>>> Is the only thing left to try a powered HDMI switch?
>>>>
>>>> Thanks for your input!
>>>>
>>>> --
>>>> Julian
>>>> _______________________________________________
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>>>> elinux-MinnowBoard at lists.elinux.org
>>>> http://lists.elinux.org/mailman/listinfo/elinux-minnowboard
>>>>
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