unable to start BOINC - "not installed"

[LAZA]

I did the kernel and SAMBA updates today.

After rebooting i wanted to start BOINC - but no reaction.
I tryied it on the CLI - but got nothing in return.

Next step, look for all processes and kill everything with boinc in name.

Found nothing serious in /var/log/boot.log or dmesg.

Problem seems to be the new Linux Kernel.

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: boinc 7.16.17+dfsg-2
ProcVersionSignature: Ubuntu 5.13.0-28.31-generic 5.13.19
Uname: Linux 5.13.0-28-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Tue Feb 1 17:22:02 2022
InstallationDate: Installed on 2020-12-28 (400 days ago)
InstallationMedia: Xubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=de_DE
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: boinc
UpgradeStatus: Upgraded to impish on 2021-11-28 (65 days ago)