Description of problem:
Simply logged into Xfce from slickgreeter.
SELinux is preventing gdb from 'open' accesses on the chr_file /dev/nvidiactl.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that gdb should be allowed open access on the nvidiactl chr_file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'gdb' --raw | audit2allow -M my-gdb
# semodule -X 300 -i my-gdb.pp

Additional Information:
Source Context                system_u:system_r:abrt_t:s0-s0:c0.c1023
Target Context                system_u:object_r:xserver_misc_device_t:s0
Target Objects                /dev/nvidiactl [ chr_file ]
Source                        gdb
Source Path                   gdb
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-
                              targeted-35.3-1.20211019git94970fc.fc35.noarch
Local Policy RPM              selinux-policy-
                              targeted-35.3-1.20211019git94970fc.fc35.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 5.14.13-300.fc35.x86_64 #1 SMP Mon
                              Oct 18 12:21:27 UTC 2021 x86_64 x86_64
Alert Count                   2
First Seen                    2021-10-28 08:55:19 AEDT
Last Seen                     2021-10-28 08:55:20 AEDT
Local ID                      5b412f54-5c35-4e2d-b268-19b00d5201aa

Raw Audit Messages
type=AVC msg=audit(1635371720.857:2485): avc:  denied  { open } for  pid=555948 comm="gdb" path="/dev/nvidiactl" dev="devtmpfs" ino=576 scontext=system_u:system_r:abrt_t:s0-s0:c0.c1023 tcontext=system_u:object_r:xserver_misc_device_t:s0 tclass=chr_file permissive=1


Hash: gdb,abrt_t,xserver_misc_device_t,chr_file,open

Version-Release number of selected component:
selinux-policy-targeted-35.3-1.20211019git94970fc.fc35.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.15.2
hashmarkername: setroubleshoot
kernel:         5.14.13-300.fc35.x86_64
type:           libreport

Potential duplicate: bug 1915470