Ubuntu won't boot after enabling jumbo packets on network device

[Erik Toussaint]

Ubuntu Desktop 23.10
Asrock IMB-X1714 main board, with Intel I226V and I226LM ethernet controllers
network-manager 1.44.2-1ubuntu1.2

When enabling jumbo packets on a wired network device by setting MTU to 9000, Ubuntu will not boot anymore. The Ubuntu splash screen, with rotating wheel, appears, at a lower resolution than ordinary, but freezes after a few seconds.

I can only revert this by disabling the ethernet devices in BIOS. After that Ubuntu will boot normally. I can then manually edit the .yaml configuration files in /etc/netplan to disable jumbo packets again.

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: network-manager 1.44.2-1ubuntu1.2
ProcVersionSignature: Ubuntu 6.5.0-14.14-generic 6.5.3
Uname: Linux 6.5.0-14-generic x86_64
ApportVersion: 2.27.0-0ubuntu5
Architecture: amd64
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Dec 14 11:04:19 2023
IfupdownConfig:

InstallationDate: Installed on 2023-12-13 (1 days ago)
InstallationMedia: Ubuntu 23.10.1 "Mantic Minotaur" - Release amd64 (20231016.1)
IpRoute:
 default via 192.168.0.1 dev enp4s0 proto dhcp src 192.168.0.208 metric 100
 169.254.0.0/16 dev enp4s0 scope link metric 1000
 192.168.0.0/24 dev enp4s0 proto kernel scope link src 192.168.0.208 metric 100
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
RfKill:

SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.44.2 connected started full enabled missing enabled missing enabled

[Danilo Egea Gondolfo (danilogondolfo)]

Hi,

If you press ESC when the splash screen shows up, do you see the console? We need to know where it's getting stuck to better understand the problem.

If you manage to see the console during boot, can you describe what you see?