Hi There,

I can successfully log into pikvm and stream video using the B101 HDMI->CSI adapter on a pi4 when USB-C powered but when I try the same setup (same SD card, B101, input host etc) but with the pi4 powered using a PoE Hat rather than USB-C power, it appears pikvm cannot find the B101 when booting (even though the B101 green power light is enabled indicating the B101 is being powered)...

I've attached the dmesg boot output from when (A) pi4 powered by USB-C and (b) pi4 powered by PoE Hat.

When the pi4 boots with USB-C power, I get the following type of messages in dmesg:

[    9.190789] tc358743 0-000f: tc358743 found @ 0x1e (bcm2835 I2C adapter)

When the pi4 boots with PoE Hat power, I get the following type of messages in dmesg:

[     10.002996] tc358743 0-000f: i2c_rd: reading register 0x0 from 0xf   failed
[     10.010416] tc358743 0-000f: not a TC358743 on address 0x1e

Thanks for taking the time to take a look!
A-dmesg-pi4-with-USBC-power.txt
B-dmesg-pi4-with-PoE-power.txt