We purchased a Khadas Vim3 in September 2019 but not until May 2020 we had the opportunity to try it. Since last year we have been evaluating various SBC platform, from raspberry, minipc, jetson and finally to khadas for our research that leads to production.
Unfortunately we found our Vim3 is defective as the HDMI port is not working. We have tried multiple HDMI cables and monitors that are working well but the device does not show anything on the monitor.
We also experience sudden freeze/lost in SSH connection repeatedly while the device is running. No problem with power and ethernet cables.
With all these problems, how we can get replacement unit under warranty? Or should we send back the device for diagnosis?
@achmadgv please try to diagnose yourself before sending it out for warranty,
Please check all of these possible circumstances once more,
Are you using a monitor of supported Resolution preferably use a HD monitor(1920x1080) ?
This is a common issue if you use a Linux image with Desktop manager, I have experienced it myself, It is caused due to the Automatic timeout present on most images with desktop manger (xfce, gnome etc.), if your application required a long SSH session, please use a linux server image. it will solve the problem
hi, maybe you did something to restore the board? since this is an integral part of working with the board, be able to diagnose first yourself, and only then try to return it.
Probably we could help you diagnose!
Please tell me, is there an LED on the board during a loss of communication with the board?
No no, timeout is related to SSH, when Headless, usually when connected to a display with keyboard mouse etc. you will get the hibernation thing if you do not use the device for more than 10-15 mins, same thing in headless SSH, you are not physically interacting with a device, the SSH is just a service running in the background, and so the computer thinks you are not using it and basically sleeps, even though in reality you are using the computer
