Last night I installed Ubuntu Touch on the JingPad C1. Thanks for all of the posts here as this install took a lot of attempts.

A note: I unlocked the bootloader in Windows and ran the up-ports installer on Linux. I did not try to unlock the bootloader in Linux.

Thanks again for all of the pointers. Now, on to the donations page. The best way for individuals to support free and open source software.

My JingPad seems to continue operating at some level after the shutdown. Example: Battery is charged to 90% and I shut the table down and put it away for the night. In the morning I touch the table, which is a bit warm to the touch and only charged to 10%.

I have tried several combinations of charging and shut down, and most of the time the battery loses its charge. Maybe 75% of the time.

Has anyone else had issues with the JingPad holding a charge? Could some process be running in the background? I rarely use this tablet. I would guess I have used it for about 200 hours since I received it in February 2022.

Thanks for the replies. I am leaning towards a software problem. Or it could very well just be the JingPad computer Godz. hahahaha

No, I cannot take the batter out for testing.

I will try using the suggestion of shutting down from recovery after I complete all other possible combinations. This takes time.

Last night I shut the tablet down using the power switch. The battery was at 51% and this morning I turned it on and the battery was 51%. But tomorrow.... who knows?

Thanks for the suggestions.

Last update:

Scenerio 1:
When charging the JingPad during use (i.e. OS is running) and I disconnect the charging cable before shutdown there will be no problem.

If I then reconnect the charging cable to the JingPad it will show the green charging animation.

If I then disconnect the charging cable something will keep running and discharge the battery.

If I reconnect the charger ( after disconnecting it once) nothing will happen visably. No charging animation.

Scenario 2:
If I connect the charging cable to the JingPad when not in use the JingPad will show the green charging animation.

If I then disconnect the charging cable something will keep running and discharge the battery.

If I reconnect the charger ( after disconnecting it once) nothing will happen visably. No charging animation.

Generally, the time from pressing the power on button to the buzz signaling the bootup, is 3 seconds. If The JingPad is in this unknown discharging state the time to the buzz is 9 seconds.

So, charging my JingPad when the OS is not running leads to problems. I guess I'll just have to charge the JingPad during use and remember to disconnect the charger before shutting down.

Thanks for all of the suggestions.

Does the JingPad keyboard work out of the box with Ubuntu Touch?
I have the C1 model with JingOS installed presently. My understanding is the A1 and C1 models are the same hardware.

TIA