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Maniphest T7916

Supermicro IPMI/BMC keyboard/mouse not working after boot
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Description

Hi,

Encountered a strange problem today. When installing VyOS bare-metal on a set of servers, the keyboard/mouse input via BMC/IPMI stops working after booting the installed VyOS version.

Tested on the following systems:

  • Supermicro SYS-5019C-M4L (running latest BMC/BIOS versions)
  • Supermicro SYS-5019S-ML (running latest BMC/BIOS versions)

Observations:

  • Keyboard works in BIOS + boot select + GRUB/boot.
  • After live boot, keyboard also works (can go through "install image" process).
  • Once booting from disk, keyboard stops working after booting into VyOS
  • If we keep typing random characters during boot (after GRUB, before login), the keyboard works during login, but if we leave it idle, it stops working again.
  • Happens with 1.4.2 + 1.4.3 + 1.5-stream-2025-Q2 + latest rolling (2025.10.07-0019-rolling)
  • Works with other OS (tested with latest OPNsense 25.7)
  • Using separate keyboard/mouse works (via IP-KVM or directly connected)
  • Seems to only happen to VyOS, and only after booting installed version

Details

Version
1.4.2, 1.4.3, 1.5-stream-2025-Q2, 2025.10.07-0019-rolling
Is it a breaking change?
Behavior change
Issue type
Bug (incorrect behavior)

Event Timeline

jocke created this task.Oct 8 2025, 3:45 PM
jocke renamed this task from Supermicro X11 IPMI/BMC keyboard/mouse not working after boot to Supermicro IPMI/BMC keyboard/mouse not working after boot.
sarthurdev subscribed.Oct 8 2025, 5:29 PM
Viacheslav triaged this task as Normal priority.Oct 8 2025, 6:16 PM
Viacheslav edited projects, added VyOS 1.5 Circinus (1.5-stream-2025-Q4); removed VyOS 1.5 Circinus (1.5-stream-2025-Q2).
jocke added a comment.EditedOct 8 2025, 7:51 PM

Tried Debian too (debian-live-13.1.0-amd64-standard.iso). Live-boot 13.1.0 works. Boot from disk/installed Debian 13.1.0 also works.

Not sure what more information would be needed?

jocke added a comment.EditedOct 8 2025, 7:59 PM

lsusb @ VyOS 1.4.3:

Screen-Capture-2025-10-08-21-58-20.png (369×907 px, 304 KB)

lsusb @ installed Debian 13.1.0:

Screen-Capture-2025-10-08-21-57-24.png (274×711 px, 93 KB)

The Avocent-entries are for the IP-KVM also connected to the servers (external dongles). Removing/disconnecting them does not fix the issue (i.e. they are not interfering in any way).

The ATEN-entries is the Supermicro BMC/IPMI.

pasik subscribed.Oct 9 2025, 6:25 AM
jocke added a comment.Oct 9 2025, 8:24 AM

We found this Debian bug report, which seems to be somewhat similar: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1116074

However, everything seems to be working for us in Debian 13.1.0. They also report that keyboard stops working during GRUB selection, which seems to work in our scenario (when it comes to VyOS). It's post-GRUB-selection that stops working for us.

jocke added a comment.Tue, Nov 11, 11:32 PM

This is still a problem. We have found no suitable fixes, and I think we've tried "everything" without avail.

For now we have a "workaround" by using the SOL feature (Serial over LAN). This makes us able to access everything pre-boot via IPMI, and everything post-boot via SSH to IPMI (SOL).