Speed?

Ingmar

How fast is this thingy supposed to run?
Just asking because when I type a ? in the U-Boot prompt, it takes about 3 minutes to complete all lines of the help. A line appears like every 5-8 seconds.
Is this normal behaviour?

loverpi

There's something wrong with your setup. It should be relatively fast.

Ingmar

It has been like that from the very beginning.
First I couldn't get into U-Boot, but thx to a tip here it finally worked (hold ESC depressed while powering up).
I can't see how I could set up something in U-Boot, because that's where one starts.
Video in link: https://photos.app.goo.gl/PMybXQ6ybbGtzXs27

loverpi

Did you type in help?

Ingmar

I typed a question mark (which is equivalent to help).
The video shows how "fast" U-Boot help returns the first 4-5 lines. All lines take about 4-5 minutes to complete.

Ingmar

loverpi said:

Did you type in help?

I meant that I can't set something up that speeds up U-Boot, as that is what is starting first. I know I can set environment variables, etc ... But that doesn't affect the speed at which U-Boot outputs its characters on the screen.

loverpi

Do you have a photo of how you have everything connected? That is not normal. What keyboard mouse and power supply are you using?

thor

I have the same behaviour. My guess is that this is on purpose, so you have time to read about each command. You can speed it up by pressing spacebar (or basically any key), which will immediately load 2 more commands.

Ingmar

As I said before: a USB 3.0 (verified working) 64 Gb memory stick, a keyboard (I have tried both dongle, Universal key and USB keyboards), and an HDMI display.
The power supply is the one that came with the KS campaign. The eMMC module is also supplied by the KS campaign,as well as the cooling case.
The last picture is U-Boot trying to start Debian (which I somehow managed to get on the eMMC after many many hours). This takes about 2 hours to show a screen (if it does at all). This slowing down ONLY happens when any keyboard is inserted
The problem has to do with the left USB port. Taking the keyboard out (whether it is a USB, a dongle, or a Universal Key), quickly starts. However, i can't get into U-Boot without the keyboard. Or at least, once I get in, it is incredibly slow.

jimm0thy

That doesn't seem right, my help command in u-boot goes so fast that I cant even read the first few commands and there doesnt seem to be a way to scroll up either to see what they are

Ingmar

jimm0thy said:

That doesn't seem right, my help command in u-boot goes so fast that I cant even read the first few commands and there doesnt seem to be a way to scroll up either to see what they are

Agree. Something is wrong.
Problem is, I have no idea what.
I'm an electronics engineer myself, but currently, I'm lost.

Ingmar

thor said:

I have the same behaviour. My guess is that this is on purpose, so you have time to read about each command. You can speed it up by pressing spacebar (or basically any key), which will immediately load 2 more commands.

You don't actually mean that this could be intentional? Jimmy0thy can't even follow his u-boot help lines.

thor

Ingmar said:

You don't actually mean that this could be intentional? Jimmy0thy can't even follow his u-boot help lines.

Yes I did, as long as I only knew about the behaviour on your and my device. Why not? As jimm0thy said, you can't scroll up, so it would make sense to show the list slowly, one by one, with an option to speed it up by pressing spacebar or similar (which is the case for me). But since it is not consistent across all devices this was obviously a wrong guess.

loverpi

u-boot's support for wireless HID devices is not very robust. The little dongles simultaneously emulate numerous devices (keyboard, mouse, touchpad, gamepad) and it causes u-boot's very basic USB support mechanism to be overloaded. The recommended solution right now is to use a wired USB keyboard until newer u-boot versions make the stack more robust.

Ingmar

I know. But the behaviour does not change with attaching a USB keyboard. I tried that.  (I already mentioned that several times)
I have tried about 8 different keyboard sets (USB dedicated dongles, USB Bluetooth keyboards, USB cable keyboards and Logitech Unifying keyboards)

DaveP

Can you try it without anything plugged into the board USB at all?  Ideally, without any HDMI monitor either?  Just use a PC, and a USB-to-3.3volt-serial debug cable?

If it's still slow getting into uBoot then, you must have a bad board.  If not you can try plugging various things into the USB and HDMI, and see which one cause the board to start slowing down.

loverpi

It's not that the board is bad. It's the USB stack in u-boot scanning the HID devices repeatedly. Get a plain jane USB keyboard without fancy stuff or use a UART cable https://amzn.to/2Kf9tls

Ingmar

Finally found a method that works consistently:
USB dongle mini keyboard from Trust, with the dongle plugged in the port FARTHEST away from the GPIO pins, and an Emtec 10-in-1 card reader with a slow mini SD Card inserted in it, plugged into the USB port CLOSEST to the GPIO pins.

Good, but now I'm stuck with that Debian Buster error on the distro transfer.

loverpi

We uploaded new images for Debian Buster to fix the lc_distro_transfer issue with nvram.

djismgaming

jimm0thy said:

That doesn't seem right, my help command in u-boot goes so fast that I cant even read the first few commands and there doesnt seem to be a way to scroll up either to see what they are

can you use

more help

?

loverpi

djismgaming said:

jimm0thy said:

That doesn't seem right, my help command in u-boot goes so fast that I cant even read the first few commands and there doesnt seem to be a way to scroll up either to see what they are

can you use

more help

?

https://amzn.to/2Lq9weP

djismgaming

Yes, UART is the way to go in this case. THanks @loverpi