GL-RM1PE - Double keypresses in BIOS, keyboard works fine once OS boots

KVM
1

I have a RM1PE (V1.7.1 release1) connected to an ASRock EP2C602 motherboard.

When in the BIOS, all key presses are duplicated. But, once booted into the OS (ESXi), the keyboard works just fine.

When I plug a physical USB keyboard into the machine, everything works fine. It’s only when using the RM1PE as the keyboard that I get double key presses.

Things I have tried:

  • Disabling the mouse and virtual media.
  • Enabling “bad link mode” in the PiKVM interface.
  • Using the virtual keyboard.
  • Using Firefox, Chromium, and Safari.
  • Using a MacBook and a Linux desktop.
  • All the USB device profiles in the “Device Identity” settings.

In all cases the same behavior is observed, key presses are duplicated in the BIOS only.

Thank you in advance for help that may be given.

3

Could you send me the KVM logs during the BIOS session?

4

Thank for providing logs, after analysing, your RM1PE works well , it seems like a BIOS compatibility issue.
You can try update your bios from asrock.

5

The motherboard is using the most recent firmware. I even re-flashed it just to make sure.

6

I've never heard of such an issue. Do you have other IPKVMs? Do they behave the same way?Use PiKVM UI directly would solve this problem?

7

I am also running into this issue on my GL-RM10 which I just purchased yesterday.
Down / Up arrow key presses when inside BIOS get doubled, keypresses seem to work fine once the machine is booted into OS.
I’ve upgraded the firmware to the latest.
I’ve also tried using the virtual keyboard from the GLKVM web interface.

8

What is the model of your motherboard?

9

Its a Dell DXP051 motherboard

10

Socket 775 LGA?
This machine was way too old. I don’t have such old machine for test.

11

The only IPKVMs I own are two RM1PEs. Both do the same double keypresses when hook up to the machine. When I hook them up to another machine, everything works fine.

I have tried using the PiKVM interface directly, and the same thing happens.

This is looking like some weird bug in how this one motherboard handles USB in the BIOS.

Do you know of any USB to PS/2 adapters that work with the RM1PE?

12

Nope..

Maybe you can try to disable MSD in the website and see if it made any better.

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13

I have tried all combinations of disabling virtual media and mouse. The behavior in BIOS is the same for all.

14

There is nothing I can do.

15

try to disable mic + speaker if enabled

pikvm has a similar issue, see bottom yellow box “USB compatibility” at PiKVM V3+ two-way audio - PiKVM Handbook

16

That’s not a bad idea, but the RM1PE doesn’t seem to have microphone support. At least it doesn’t show in either the GLiNet UI or PiKVM UI.

I’ve verified (using kvmd-otgconf) that only one USB endpoint (keyboard) is being used.

17

I own a RM1PE with latest version V1.8.0 release1 and use the mic + speaker on a daily basis, check the kvm web ui.