Bug#1127995: linux: Boot hangs at flashing underscore after libvirtd

From	Vivek <vivekquissor@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1127995: linux: Boot hangs at flashing underscore after libvirtd
Date	2026-02-14 22:20 +0100
Message-ID	<Movdv-Cnk-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Source: linux
Version: 6.12.69-1
Severity: important
X-Debbugs-Cc: vivekquissor@gmail.com

Dear Maintainer,

System boots successfully through services but hangs with flashing underscore after last [OK] message of "started libvirtd.service".

No further progress to graphical login

TTY 2-6 accessible

systemctl status sddm shows active (running) initially
journaljtl -u sddm -b only shows:

Initializing
Starting
Logind interface found

Main workaround was booting into older kernel 6.12.63 works perfectly
Forcing DisplayServer=x11 does nothing

Expected: SDDM login screen appearing

Observed: Stuck flashing underscore post-libvirtd, no GUI

Steps to reproduce:
Boot with problematic kernel
Observe boot messages reach libvirtd OK
Flashing underscore present

Hardware -
I5 7500
MSI H110i PRO
GTX 1050 2GB
32GB RAM


Thanks

-- System Information:
Debian Release: 13.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.69+deb13-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

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Bug#1127995: linux: Boot hangs at flashing underscore after libvirtd Vivek <vivekquissor@gmail.com> - 2026-02-14 22:20 +0100
  Processed: Re: Bug#1127995: linux: Boot hangs at flashing  underscore after libvirtd "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-02-15 10:00 +0100
  Bug#1127995: linux: Boot hangs at flashing underscore after libvirtd Salvatore Bonaccorso <carnil@debian.org> - 2026-02-15 10:00 +0100
  Bug#1127995: marked as done (linux: Boot hangs at flashing  underscore after libvirtd) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-02-15 11:30 +0100

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