Just started working with this device with the Desktop enabled image and I have run into a minor issue getting display out to always work. I have a USB-C hub connected to USB1 with supplemental power, but the issue I am seeing is likely due to a KVM device that is in between the hub and monitors. This setup works for other USB-C based computers I own but for the Tachyon it is somewhat intermittent, suggesting to me that maybe there is a timing issue that is causing it to default to a headless mode during boot. I was curious if anyone more familiar with the boot sequence could offer some insight or suggestions to perhaps add in timeouts, delays, or retries to see if this is just timing. Thanks!
It has trouble when you reboot. You have to shutdown, unplug the battery and then boot it back up and then the display comes back. At least that’s what I’ve found so far.
Thanks! I did notice that as well that rebooting has not worked so far, but a power up from being in the off state does. And pulling the battery and reconnecting has also increased the odds of it working as well. I did however just recently change the sleep for the “particle-setup” step from 5 to 20 and have noticed (so far) that it is now booting to a display more frequently without removing the battery. Still no luck on reboots, but that might have had some effect directly or indirectly. It’s a start!
Good to know. I’m building a NAS with mine so the battery power isn’t a thing for me so I’d rather just be able to boot without it altogether.
Even after unplugging all power, I still have trouble getting Video consistantly. I have the recommended uGREEN plugged into USB1. The HDMI goes to a 3 way HDMI splitter. The correct splitter port is selected. Most the time, a power up will connect properly to the Monitor.
I have 5v 5A power going into the UGREEN USB-C port and the 3 battery power supply plugged in. 1st the Battery power then the USB-C power.
Not sure if leaving a Logitech Unifying Receiver plugged into the UGREEN Hub had anything to do with previnting the Display from showing,
looking for any help.
I’ve been using this UGREEN Revodok 6 in 1 with UGREEN Nexode Pro 100W and UGREEN 240W USB C Cable Gen2 10Gbps USB 3.2.
So far, no issues with a HDMI display on 20.04 LTS.
btw - I’ve been using the 100W PD charger and the above cable with a RPI 5 for sometime as well.
I believe the problem stems from my misunderstanding of a Raspberry Pi 5 power supply. I thought I could siphon off the 5V bypassing the D+ and D- and Signal and connect it to the external power pins. After placing the RPi 5 power back into the recommended UGREEN Hub the HDMI display comes on. Next attempt, I Ordered a constant on 5V 5A power supply for next attempt for external power with only 2 pin output.
The goal is to have the option of external power and accessing the HDMI through the UGREEN Hub. I am hoping that the ADT-LINK sixsixsevenseven saw will fit in the M1 enclosure. I ordered both the USB 3.2 version with the chip and one without. Waiting for the cables to come. The one from Amazon apparently only come without the chip for 5A. Ordered the chip version directly from the ADT-Link store (trying both the bottom 90 degree, like the one that came with the enclosure, and bottom right parallel to the board).
Fro my observations: I was initially using a RPI 5 PSU - battery was not charging, used any Apple PSU and all works fine ever since!
Thank you, I will consider that option as well.
Update on the ADT-LINK USB-C cable. I do not have the one with the 5A chip but did receive the non-chip. ADT-Link USB3.2 GEN2x2 Type C Male to Type C Female Adapter 20G/BPS Internal USB 3.2 Shielded Ribbon Flat Cable Up/Down Angled USB-C Extender (20cm, T9A-T7B-NC)
The cable on the left is the ADT-LINK. Unfortunately, the USB-C connector is 12.5mm and the original USB-C that came with the Tachyon is 8.2mm. The ADT-LINK USB-C shaft is too long to fit. As the picture shows everything else would fit. However, it will not fit going up in its present form. The cable is stiff (unbendable) for approximately 19.6mm. I do not know if the metal shaft was shorter if it would work. I believe the right angle one going parallel to the board might work if the shaft was not as long. Dare I cut part of the shaft off? That was a bad idea!
Still waiting for the other non-chip (non 5A);It got lost in the mail.
I ordered the Chipped ones directly from ADT-LINK as I could not figure out how to order them from Amazon. The are probably 2 weeks off. Although I suspect the shaft length will still be an issue.
Has anyone else found a USB-C 3.2 cable that fits in the M1 enclosure?
Unless a cable that can handle the 5V 5A and Alt video can be found I will try a different container.
Also, I used a constant on 5V 5A power supply and connected it to the external power pins. Plugged in the battery connector and with the recommended UGREEN Hub (without the 5V 5A raspberry pi power supply) the HDMI display would not display.
Then, Plugged in the Raspberry Pi power supply into the UGREEN Hub without the external power connected and the HDMI display works. I thought the external 5V 5A power (with the battery connected as well) would allow the HDMI to display. I must have missed something.
Re-reading the power methods, I came across the following NOTE
Due to the hardware architectural limitations of the device, you'll lose USB 1 functionality when powering from the header.
That explains why the Display did not work.
However, that brings up another question. Currently, I have the 3 Cell Li-Po battery from Kickstarter. Is it possible to add more batteries (different container)? What is the Voltage/ Amperage limit for the Tachyon?