PiKVM does not boot with device connected #623

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opened 2026-02-20 14:02:38 -05:00 by deekerman · 0 comments

deekerman commented

2026-02-20 14:02:38 -05:00

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Originally created by @chri2 on GitHub (Apr 6, 2023).

Originally assigned to: @mdevaev on GitHub.

Describe the bug
When I switch on the power to my PiKVM the power led inside the case switches on and nothing happens - no output on the oled, no blinking of the ACT led.

To Reproduce
Steps to reproduce the behavior, like:

Connect your Librem5 thorugh a Baseus 8-in-1 usb hub to PD usb-c power, the usb-console of the PiKVM to the hub and an hdmi cable between PiKVMs VIDEO IN and the hubs hdmi output.
Connect the power to the PiKVM
wait
see error: power led is lit, but PiKVM doesn't start
disconnect the hdmi between PiKVM and usb hub
PiKVMs ACT led starts blinking, oled switches on, PiKVM boots
re-connect hdmi: everything works as expected

Expected behavior
PiKVM should boot while connected via hdmi to the usb-c hub (connected to the Librem5).

PiKVM info:

Raspberry Pi 4 Model B Rev 1.4
PiKVM v3 HAT (from Crowdfunding Campaign)
Video capture as in default configuration
KVMD version: kvmd 3.211-1
uStreamer version: ustreamer 5.38-1
Linux kernel: Linux pikvm 5.15.68-3-rpi-ARCH #1 SMP Mon Oct 31 20:56:54 MSK 2022 armv7l GNU/Linux

Originally created by @chri2 on GitHub (Apr 6, 2023). Originally assigned to: @mdevaev on GitHub. **Describe the bug** When I switch on the power to my PiKVM the power led inside the case switches on and nothing happens - no output on the oled, no blinking of the `ACT` led. **To Reproduce** Steps to reproduce the behavior, like: 1. Connect your Librem5 thorugh a Baseus 8-in-1 usb hub to PD usb-c power, the usb-console of the PiKVM to the hub and an hdmi cable between PiKVMs `VIDEO IN` and the hubs hdmi output. 2. Connect the power to the PiKVM 3. wait 4. see error: power led is lit, but PiKVM doesn't start 5. disconnect the hdmi between PiKVM and usb hub 6. PiKVMs `ACT` led starts blinking, oled switches on, PiKVM boots 7. re-connect hdmi: everything works as expected **Expected behavior** PiKVM should boot while connected via hdmi to the usb-c hub (connected to the Librem5). **PiKVM info:** - Raspberry Pi 4 Model B Rev 1.4 - PiKVM v3 HAT (from Crowdfunding Campaign) - Video capture as in default configuration - KVMD version: kvmd 3.211-1 - uStreamer version: ustreamer 5.38-1 - Linux kernel: Linux pikvm 5.15.68-3-rpi-ARCH #1 SMP Mon Oct 31 20:56:54 MSK 2022 armv7l GNU/Linux