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[Bug 2116224] Re: unable to launch "/usr/libexec/run-systemd-session unity-session.target" X session

 

Regression caused by https://salsa.debian.org/xorg-
team/xorg/-/merge_requests/16

** Also affects: xorg (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2116224

Title:
  unable to launch "/usr/libexec/run-systemd-session unity-
  session.target" X session

Status in unity package in Ubuntu:
  Confirmed
Status in xorg package in Ubuntu:
  New

Bug description:
  Unity desktop won't launch

  A window appears: unable to launch "/usr/libexec/run-systemd-session unity-session.target" X session --- "/usr/libexec/run-systemd-session unity-session.target" not found; falling back to default session.
  --- 
  ProblemType: Bug
  .proc.driver.nvidia.capabilities.fabric-imex-mgmt:
   DeviceFileMinor: 4323
   DeviceFileMode: 256
   DeviceFileModify: 1
  .proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
  .proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
  .proc.driver.nvidia.gpus.0000.06.00.0: Error: path was not a regular file.
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.suspend: suspend hibernate resume
  .proc.driver.nvidia.suspend_depth: default modeset uvm
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX Open Kernel Module for x86_64  570.169  Release Build  (dvs-builder@U22-I3-AE18-31-4)  Thu Jun 12 19:38:21 UTC 2025
   GCC version:  gcc version 14.3.0 (Ubuntu 14.3.0-1ubuntu1)
  ApportVersion: 2.33.1-0ubuntu1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: unity
  DistUpgraded: Fresh install
  DistroCodename: devel
  DistroRelease: Rhino Linux 2025.1
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia/570.169, 6.13.0-061300rc1-generic, x86_64: installed
   nvidia/570.169, 6.14.0-15-generic, x86_64: installed
   nvidia/570.169, 6.15.0-3-generic, x86_64: installed
  GraphicsCard:
   NVIDIA Corporation AD107 [GeForce RTX 4060] [10de:2882] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Gigabyte Technology Co., Ltd Device [1458:4116]
  GsettingsChanges:
   
  InstallationDate: Installed on 2022-10-23 (989 days ago)
  InstallationMedia: Ubuntu-Unity 22.10 "Kinetic Kudu" - Release amd64 (20221018)
  MachineType: QEMU Standard PC (Q35 + ICH9, 2009)
  Package: unity 7.7.0+23.04.20230222.2-0ubuntu8 [origin: Ubuntu]
  PackageArchitecture: amd64
  ProcEnviron:
   LANG=en_CA.UTF-8
   LANGUAGE=en_CA:en
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.15.0-3-generic root=UUID=2e897f4a-4497-49da-b576-dc2392afbdef ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 6.15.0-3.3-generic 6.15.0
  Tags: devel rc-7.7.0+23.04.20230222.2-0ubuntu8 third-party-packages ubuntu
  Uname: Linux 6.15.0-3-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: N/A
  _MarkForUpload: True
  dmi.bios.date: 02/02/2022
  dmi.bios.release: 0.0
  dmi.bios.vendor: EDK II
  dmi.bios.version: unknown
  dmi.chassis.type: 1
  dmi.chassis.vendor: QEMU
  dmi.chassis.version: pc-q35-10.0
  dmi.modalias: dmi:bvnEDKII:bvrunknown:bd02/02/2022:br0.0:svnQEMU:pnStandardPC(Q35+ICH9,2009):pvrpc-q35-10.0:cvnQEMU:ct1:cvrpc-q35-10.0:sku:
  dmi.product.name: Standard PC (Q35 + ICH9, 2009)
  dmi.product.version: pc-q35-10.0
  dmi.sys.vendor: QEMU
  version.compiz: compiz 1:0.9.14.2+22.10.20220822-0ubuntu16
  version.libdrm2: libdrm2 2.4.125-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 25.1.5-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:21.1.16-1ubuntu1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.18-1

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