I’m running a Edge-Captain with default image on eMMC (Fenix 0.9.2, Ubuntu 20.04.1 LTS, Linux 5.7; latest updates) and face constant reboots under load. I initially assumed this was due to power, but I’ve now tested another power supply without success.
Idle or very light load; only 1 core; is no problem for hours
Light load (~25%) usually works for ~ 10-15 minutes
Heavy load really depends; sometimes it lasts, sometimes it doesn’t
Hello, When you changed power supply(PS), did that include a different cable? Are the PS used PD type or QC? PD recommended.
The Captain can power the system via the front barrel connector, 12 volt, 2 amp or better. If PS available, try the Captain power input jack to rule out any possible USB-C connector issue.
Thanks for your suggestions. I’ve ordered a new 12V/2A power supply; none of these phone-chargers; Hopefully a proper, stable one. I’ll post back soon!
You may already know the following, I’m just being overly cautious.
Please ensure the power supply you ordered has the correct Tip Polarity. The Captain uses a Tip Positive connector.
This is indicated on Power Supplies like the following example(Khadas DC005 shown)…
It seems like I’ve gotten this to work with the new power supply (12V/2A/24W). I’ve been able to complete one compilation, and shutdown the board. Interestingly, the next morning (today), the board will not power on with the power supply.
Did my power supply just die over night?! (I guess so…)
It powers on fine with USB-C and I’ve no way to test the power supply elsewhere.
Over the time I have been using TV boxes and SBCs, many issues have been traced to power supplies. Quality varies wildly from one PS supplier to the next. Some can’t even output their rated power.
Hearing that a power supply has failed after little use is not surprising to me.
As stated by Vladimir.v.v, I have not had any issue with the Khadas supplies. I have at least 1 of every supply Khadas sells.
Cables can also be an issue. If you go with the Khadas USB-C 24W PS, it may be a good idea to pick up one of the Khadas USB-C to USB-C cables at the same time. Also available from Amazon and Aliexpress.
Keep us posted.
Yes, USB cables and USB ports can be finicky. One of the things to like about the Captain is its barrel DC in jack. It makes for a good test of the Edge for those suspecting the USB-C port, USB cable or USB power supply issues. If the Edge runs from the Captain’s DC in jack, then the problem isn’t the Edge.
I decided to take the chance, and try another new non-Khadas power supply. It really came down to shipping time (1 day vs 6 days). Yeah, impatient bunch today …
Anyway, this is a PChero 30W Universal AC/DC Adapter (AC input: 100-240V 0.25A 50/60Hz, DC output: 3V / 4.5V / 5V / 6V / 7.5V / 9V / 12V). For those who care, Model: B079P8G5FX
So far so good. I’ve been compiling all morning! Just for jokes, added some extra cooling
Yeah, that’s where I found them. They make a difference when it gets hot. I’d say 2-3 degrees. I’ll remove the stock heat sink soon and try them on the chip (with some thermal glue).
Since they are not that big, I’m not sure whether one of these on the RK3399 would actually perform better, than the stock heat sink. Particularly without fan running …