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REPLYADDR pbyabmle@4wrd.cc
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MSGID: 1bb2d440
REPLY: 7435da53
PID: SoupGate-Win32 v1.05
On 1/5/2024 19:59, Bryan wrote:
> On 1/5/2024 11:11, Theo wrote:
>> Bryan wrote:
>>>
>>> Ok, I do see the lite version SHOULD boot from uSD, so perhaps this is a
>>> problem with the actual OS version as well. There's also this little bit
>>> of info with some changes to config.txt:
>>>
>>> https://www.waveshare.com/wiki/Wrote_Image_for_Compute_Modul
_Boards_Lite_version
>>>
>>>
>>> which I'll try.
>>
>> This in config.txt:
>> dtoverlay=dwc2,dr_mode=host
>>
>> (there should not be a dot on the end)
>>
>> overrides the USB 2 port into host mode, ie to accept USB sticks etc. I
>> suppose that could be a reason why your CM4 won't USB boot.
>> Ordinarily the
>> port can detect whether to be in host or device more via the 5th pin
>> on the
>> micro USB connector, which is tied low in an OTG adapter to force host
>> mode.
>> Maybe your board doesn't do this correctly? Of course, if you can't boot
>> you can't read config.txt to force the port to the right direction, so
>> you'd have to rely on the pin being tied low.
>>
>> Even without this, and even with no SD, I'd expect to see some sign of
>> life
>> on the HDMI: the Pi4 should display a 'BIOS' style boot screen that says
>> what it's trying to boot from.
>>
>>> I don't have a lot of information on the carrier itself, that seems to
>>> be somewhat lacking. Maybe the carrier is bad, being a Super High
>>> Quality Much Goodly Chinese device, who knows? There are reviews of it
>>> out there, but no real hard information. I'll dig into that as well.
>>>
>>> The local Micro Center has a cheap carrier in stock of a different
>>> style, so I'm going to pick up one of those this weekend and give that a
>>> try as well, but I'll grab an older OS first to see how that goes.
>>
>> Good plan. Once you can get anything working, you can then take deltas
>> against the setup you have to narrow down the problem. If absolutely
>> nothing works then there are few clues.
>>
>> Theo
>>
>
> Some success here. I'm using the Bullseye version presented on the RPi
> OS page, instead of whatever the latest is.
>
> I set the other carrier board up, it's marked as being made by
> "bigtreetech" and looks like a regular Pi once assembled. Trying the SD
> card in it's slot, I see the same things as with the other board,
> according to my router it's been offered an address - this happens over
> and over. No boot happens.
>
> I took the SD card and put it in a USB reader, put it in a USB port on
> this carrier, and it booted. That would seem to indicate that the
> MCUZone carrier that I hoped to use is incapable of booting from USB - I
> assume the rainbow splash screen is a kernel panic at this point.
>
> (I can't see anything visual on the bigtreetech carrier, it has
> micro-HDMI and I can't find my adapters.)
>
>
> Going back to the MCUZone carrier, I put the known good card in the SD
> slot. Here's what I see:
>
> https://pic8.co/a/d697dd4c-18c1-42c7-90e9-2fcf8d7d931c/
>
> The device eventually gets an address like it's waiting for something
> else, and does this over and over, never booting. I should mention this
> carrier has a run/boot jumper, this is in the boot position. Putting it
> in the run position (I assume, it's not clear) gives me a black screen
> and nothing else. Putting the card in the known good reader gives me the
> same rainbow screen.
>
> One thing I notice is the boot order, which has a "1" for SD card at the
> end of the list. However, I also see "SD card not detected" - is it
> possible that the boot order needs to be changed so it's looking for the
> SD card first? Doing this is something I'd have to research before
> attempting.
>
> In any event, the MCUZone device won't boot from USB, and none of them
> boot from SD at this point.
But looking a little closer, it looks like it's trying all the boot
devices from right to left - it doesn't see the SD card so it goes to
the next one. So it probably won't matter if I change the boot order,
it would just never get to the SD card.
--- SoupGate-Win32 v1.05
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