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Initially, I installed version 26.04 and found that I couldn’t get into
the desktop—the mouse and keyboard were unresponsive, locking me out at
the login screen. Later, I set up password-free login, upgraded from a
configured 25.10 system, and found that right after logging in without a
password, there’s a high chance the screen would flicker to black and
then return to the login interface. At that point, my keyboard and mouse
would become unresponsive.It is Ubuntu Studio 26.04
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: ubuntustudio-desktop 26.04.1
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
Uname: Linux 6.17.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Thu Nov 20 00:26:19 2025
InstallationDate: Installed on 2025-11-19 (0 days ago)
InstallationMedia: Ubuntu-Studio 25.10 "Questing Quokka" - Release amd64
(20251007.1)
SourcePackage: ubuntustudio-meta
UpgradeStatus: Upgraded to resolute on 2025-11-19 (0 days ago)
** Affects: sddm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute third-party-packages wayland-session
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pgrade to 26.04 Causes Login Loop and Input Device Failure After Auto-Login
https://bugs.launchpad.net/bugs/2131943
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which is subscribed to sddm in Ubuntu.
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