[MinnowBoard] no suitable video mode found booting in blind mode

[Bill Traynor]

Luca,

If you have time, you may want to try Fedora from your external USB
CDROM.  It's possible that this is simply a Debian thing.  I will try
the same from a thumb drive and see what happens.

On Thu, May 21, 2015 at 3:40 PM, John Hawley <john.hawley at intel.com> wrote:
> On 05/21/2015 08:26 AM, Ken Tait wrote:
>> There is one other trick you can try to verify that this is the real
>> problem with your setup.
>>
>> place a switch in the + line of the wallwart going to the barrel jack.
>>
>> Turn switch off, plug in barrel jack, plug in wall wart. Wait 5 seconds,
>> then turn on the switch. It the board comes up then the supply is right
>> on the edge of being large enough.  What you are doing with this test is
>> allowing the wallwart to come up to full voltage and charge it's caps
>> before applying a load to it.
>
> Agreed, there are a number of power supplies that may be marginal in
> general.  You can find our, paper napkin math, assumptions on power draw:
>
> http://elinux.org/Minnowboard:MinnowMax#Power_Plug
>
> along with some recommended power supplies.  That being said we've got
> some internal folks who power the board off a good 2.1A usb port, so
> obviously your mileage is going to vary.
>
> That being said, I don't think the issue you are describing is really
> power related, as I'd suspect the CPU has settled down a bit by that
> point anyway.  I also have a memory of someone else reporting something
> similar so I need to go back and look to see how this got resolved.
>
>> Another thing I noticed here on all these boards is that the software on
>> boot is not quite right..Someone is making the ASSumption that things
>> turn on instantaneously in hardware so the software has no or minimal
>> delays on boot. This needs to change. For this type of setup there
>> should be a stall delay of at least 800ms on first power application
>> before it checks for a boot device or anything else..
>
> Well the assumptions that are being made in the firmware are the ones
> being laid out by the respective specs for the interface (usb, sd, sata,
> etc), and to date I haven't seen or had a report of storage having a
> spin up time problem (like you are describing, and recommending an 800ms
> delay).  I'd actually love to know what devices you've got that are
> causing problems for you, as that might be more indicative of other
> problems, where the delay would just mask the issue.
>
> - John 'Warthog9' Hawley
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