what is the current capability of the PSU supplying the monitor? Is it an official PSU or third party?I just connected my new RPi Monitor with built-in speakers, and it works fine concerning the image.
But the audio is very low volume!
I have set all volume controls I can find to max and the sound is still very muted.
Screen top ribbon right hand speaker=MAX
Player volume=MAX
Monitor back side volume buttons=50% and will not go higher! Why?
Note: Power is coming from a dedicated charger, so it is NOT powered from the RPi4B at all.
Is this normal?
If not where can I adjust the max volume to a sensible value?
I have a separate power supply for the monitor if that matters.
If I got all the explanations by RPT folks right the monitor limits brightness to 60% and volume to 50% when supplied from the Pi. Having a seperate PSU for the monitor will allow to go all the way up to 100% on both.
Quoting the rather poor datasheet:
while in the documentation section it states a USB-C PD supply is needed1.5A at 5V
Can be powered directly from a Raspberry Pi USB port (max 60% brightness, 50% volume) or by a separate power supply (max 100% brightness, 100% volume)
--> your PSU is not USB-C PD compliant -> it will not 'unlock' the limiters.Power the Monitor
The Raspberry Pi Monitor draws power from a 5V USB Power Delivery (USB-PD) power source. Many USB-C power supplies, including the official power supplies for the Raspberry Pi 4 and Raspberry Pi 5, support this standard.
When using a power source that provides at least 1.5A of current over USB-PD, the Monitor operates in Full Power mode. In Full Power mode, you can use the full range (0%-100%) of display brightness and speaker volume.
When using a power source that does not supply at least 1.5A of current over USB-PD (including all USB-A power sources), the Monitor operates in Power Saving mode. Power Saving mode limits the maximum display brightness and the maximum speaker volume to ensure reliable operation. In Power Saving mode, you can use a limited range (0-50%) of display brightness and a limited range (0-60%) of speaker volume. When powered from a Raspberry Pi, the Monitor operates in Power Saving mode, since Raspberry Pi devices cannot provide 1.5A of current over a USB-A connection.
To switch from Power Saving mode to Full Power mode, press and hold the increase brightness button for 3 seconds.
Statistics: Posted by aBUGSworstnightmare — Tue Jan 14, 2025 6:13 am