I have same problem. Here is some system info:
q@i5:~$ uname -a
Linux i5 5.4.0-56-generic #62-Ubuntu SMP Mon Nov 23 19:20:19 UTC 2020 x86_64
x86_64 x86_64 GNU/Linux
q@i5:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.1 LTS"
q@i5:~$ apt-cache policy lxqt-policykit
lxqt-policykit:
Установлен: 0.14.1-1ubuntu2
Кандидат: 0.14.1-1ubuntu2
Таблица версий:
*** 0.14.1-1ubuntu2 500
500 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages
100 /var/lib/dpkg/status
I'm getting error when trying to run synaptic from .desktop file or run
`synaptic-pkexec`.
I'm getting popup window for password entry. I enter correct password and then
I got error:
q@i5:~$ dmesg | grep policy
[ 3.472956] AppArmor: AppArmor sha1 policy hashing enabled
[ 147.848215] traps: lxqt-policykit-[1449] general protection fault
ip:7fe59f4f9671 sp:7ffc2af52bf8 error:0 in
libgobject-2.0.so.0.6400.3[7fe59f4cb000+36000]
[ 169.048264] traps: lxqt-policykit-[1668] general protection fault
ip:7f0ad00a6671 sp:7fff02bcb2a8 error:0 in
libgobject-2.0.so.0.6400.3[7f0ad0078000+36000]
q@i5:~$ synaptic-pkexec
Error executing command as another user: Not authorized
This incident has been reported.
q@i5:~$ dmesg | grep policy
[ 3.472956] AppArmor: AppArmor sha1 policy hashing enabled
[ 147.848215] traps: lxqt-policykit-[1449] general protection fault
ip:7fe59f4f9671 sp:7ffc2af52bf8 error:0 in
libgobject-2.0.so.0.6400.3[7fe59f4cb000+36000]
[ 169.048264] traps: lxqt-policykit-[1668] general protection fault
ip:7f0ad00a6671 sp:7fff02bcb2a8 error:0 in
libgobject-2.0.so.0.6400.3[7f0ad0078000+36000]
[ 598.506741] traps: lxqt-policykit-[1687] general protection fault
ip:7f1023e0f671 sp:7ffdc0298888 error:0 in
libgobject-2.0.so.0.6400.3[7f1023de1000+36000]
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https://bugs.launchpad.net/bugs/1899782
Title:
lxqt-policykit-agent crashed with SIGSEGV in
g_type_check_instance_is_fundamentally_a()
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