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Not whole BIOS/UEFI image is being displayed #1089

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opened 2026-02-20 14:10:57 -05:00 by deekerman · 4 comments
deekerman commented 2026-02-20 14:10:57 -05:00
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Originally created by @pablocool on GitHub (Nov 25, 2025).

Originally assigned to: @mdevaev on GitHub.

Describe the bug
Booting into UEFI of Asrock H510M-HVS R2.0 results in two issues. First - mouse emulation is not working (keyboard works fine). To temporarely (until next enter to UEFI) I go to terminal switch to root account and reboot pikvm.

The second problem is with the image. The pikvm window displays a partial UEFI window. To see the invisible part, I have to move the mouse cursor to the edge of the window. "Reduce window to its original size and center it" or "Maximize window" do not solve the problem.

To Reproduce
Steps to reproduce the behavior, like:

  1. Go to UEFI with F2/Del key
  2. See error

Expected behavior
Whole UEFI window fits the pikvm window.

Screenshots

Image Image

Desktop (please complete the following information):

PiKVM info:

  • Raspberry Pi board version RPi Zero 2 W
  • PiKVM platform v2-hdmi
  • Video capture type: CSI-2 C790
  • KVMD version: kvmd 4.66-1, kvmd-fan 0.32-1, kvmd-platform-v2-hdmi-zero2w 4.66-1, kvmd-webterm 0.50-1
  • uStreamer version: ustreamer 6.35-1
  • Linux kernel: Linux pikvm 6.6.45-11-rpi #1 SMP Sat Feb 22 20:43:12 UTC 2025 armv7l GNU/Linux

Additional context
Add any other context about the problem here.

Originally created by @pablocool on GitHub (Nov 25, 2025). Originally assigned to: @mdevaev on GitHub. **Describe the bug** Booting into UEFI of Asrock H510M-HVS R2.0 results in two issues. First - mouse emulation is not working (keyboard works fine). To temporarely (until next enter to UEFI) I go to terminal switch to root account and reboot pikvm. The second problem is with the image. The pikvm window displays a partial UEFI window. To see the invisible part, I have to move the mouse cursor to the edge of the window. "Reduce window to its original size and center it" or "Maximize window" do not solve the problem. **To Reproduce** Steps to reproduce the behavior, like: 1. Go to UEFI with F2/Del key 2. See error **Expected behavior** Whole UEFI window fits the pikvm window. **Screenshots** <img width="1329" height="798" alt="Image" src="https://github.com/user-attachments/assets/4961b39b-3e7b-46f5-8209-7f527b503ad6" /> <img width="1318" height="783" alt="Image" src="https://github.com/user-attachments/assets/7ca4c6ea-0d3f-46eb-a8d1-7c59ecdf7bfd" /> **Desktop (please complete the following information):** - OS: Windows 11 - Browser Brave - Version [Brave 1.84.141 (Oficjalna wersja) (64-bitowa)](https://brave.com/latest/) **PiKVM info:** - Raspberry Pi board version RPi Zero 2 W - PiKVM platform v2-hdmi - Video capture type: CSI-2 C790 - KVMD version: kvmd 4.66-1, kvmd-fan 0.32-1, kvmd-platform-v2-hdmi-zero2w 4.66-1, kvmd-webterm 0.50-1 - uStreamer version: ustreamer 6.35-1 - Linux kernel: Linux pikvm 6.6.45-11-rpi #1 SMP Sat Feb 22 20:43:12 UTC 2025 armv7l GNU/Linux **Additional context** Add any other context about the problem here.
deekerman commented 2026-02-20 14:10:59 -05:00
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@mdevaev commented on GitHub (Nov 25, 2025):

Hello. It seems this bios is a bit buggy. Please try some alternative edids: http://docs.pikvm.org/edid

@mdevaev commented on GitHub (Nov 25, 2025): Hello. It seems this bios is a bit buggy. Please try some alternative edids: http://docs.pikvm.org/edid
deekerman commented 2026-02-20 14:10:59 -05:00
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@pablocool commented on GitHub (Nov 25, 2025):

Thank you. Applying EDID of "1920x1080 as preferred. Useful for motherboards such as ASRock H670 PG Riptide, Gigabyte GA-H77-DS3H, MSI series such as B550M, B660M, Z690-A and X570. Also the Intel NUC." solved window bug.

Although mouse is not must have in UEFI maybe you have suggestion related to that issue also?

@pablocool commented on GitHub (Nov 25, 2025): Thank you. Applying EDID of "1920x1080 as preferred. Useful for motherboards such as [ASRock H670 PG Riptide](https://github.com/pikvm/pikvm/issues/715), Gigabyte GA-H77-DS3H, MSI series such as B550M, B660M, Z690-A and X570. Also the Intel NUC." solved window bug. Although mouse is not must have in UEFI maybe you have suggestion related to that issue also?
deekerman commented 2026-02-20 14:10:59 -05:00
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@mdevaev commented on GitHub (Nov 25, 2025):

Use a relative (maybe in dual) mouse mode: https://docs.pikvm.org/mouse

Some BIOSes can't work with absolute mouse.

@mdevaev commented on GitHub (Nov 25, 2025): Use a relative (maybe in dual) mouse mode: https://docs.pikvm.org/mouse Some BIOSes can't work with absolute mouse.
deekerman commented 2026-02-20 14:10:59 -05:00
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@mdevaev commented on GitHub (Dec 1, 2025):

Solved I guess.

@mdevaev commented on GitHub (Dec 1, 2025): Solved I guess.
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