HDMI and battery

Hardware Librem 5
1

When I connect to L5 a projector, from USB-C to hub with HDMI and from there to projector, it kinda works… but the battery meter drops within seconds to 3%. A few moments later to 2% and the phone shuts down.

On reboot it still says 3%. Shutdown, remove the battery and re-insert, boot and it says 75% as it was originally. I did this test twice with the same behavior. So the battery is NOT drained. But the battery meter thinks it does. I wanted this for a very short presentation 3-4 beamer slides. But it did not work.

Is there something that could be done? The problem is not real since the battery stays charged.

I forgot to say I am on Byzantium fully updated.

1 Like
2

Contact Purism.

3

Does the USB hub have a jack for external power source? The HDMI load might be more than the L5 can sustainably supply (although the projector should be powering the interface). The cuurent might be so high that the battery voltage is lower than it would be for its actual state of charge.

2 Likes
4

Also, try a different model of dock.

2 Likes
5

Thanks for the advice. Will try a different dock. Did not thought that could be the problem.

1 Like
6

Thank you. With a USB-C to hdmi cable it works fine. Simple question: is there a command line to start on L5 terminal an app and this app will appear in the projector’s screen?

1 Like