06-15-2020, 10:22 AM
I received a PBP a couple of weeks back, and generally I really like it. (Though I wish the code for the keyboard/clickpad controller was opensourced! The trackpad lag makes the PBP “feel” a lot slower than it really is!)
I’ve been doing some larger software package builds (with make -j 6) with the PBP and have noticed that when I have heavy constant load on the CPUs, the internal battery begins to drain even when the unit is externally powered via the the 5V 3A barrel connector. Is this normal or do I need to try and track down some other issue here?
I apologize if this has already been covered; I did a couple of searches and didn’t find any information that really matched what I’m interested in. I’ve seen some comments on this type of behavior when powering external USB devices, but not with CPU load.
If this is normal, I’m interested in tweaking some of the charger circuit setpoints and seeing if it improves things. (With a new power adapter of course!) Looking at the schematic I see some potential spots that may be of interest. However, without layout art and a complete BOM, it’s hard to say how much margin there is to increase the draw without risking CCA damage.
I’ve been doing some larger software package builds (with make -j 6) with the PBP and have noticed that when I have heavy constant load on the CPUs, the internal battery begins to drain even when the unit is externally powered via the the 5V 3A barrel connector. Is this normal or do I need to try and track down some other issue here?
I apologize if this has already been covered; I did a couple of searches and didn’t find any information that really matched what I’m interested in. I’ve seen some comments on this type of behavior when powering external USB devices, but not with CPU load.
If this is normal, I’m interested in tweaking some of the charger circuit setpoints and seeing if it improves things. (With a new power adapter of course!) Looking at the schematic I see some potential spots that may be of interest. However, without layout art and a complete BOM, it’s hard to say how much margin there is to increase the draw without risking CCA damage.
