Description of problem:
SELinux is preventing /usr/bin/Xorg from 'write' accesses on the directory /tmp.

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

If you believe that Xorg should be allowed write access on the tmp directory 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:
# grep Xorg /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:bumblebee_t:s0
Target Context                system_u:object_r:tmp_t:s0
Target Objects                /tmp [ dir ]
Source                        Xorg
Source Path                   /usr/bin/Xorg
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           xorg-x11-server-Xorg-1.14.4-5.fc20.x86_64
Target RPM Packages           filesystem-3.2-19.fc20.x86_64
Policy RPM                    selinux-policy-3.12.1-106.fc20.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.12.7-300.fc20.x86_64 #1 SMP Fri
                              Jan 10 15:35:31 UTC 2014 x86_64 x86_64
Alert Count                   6
First Seen                    2014-01-16 10:05:53 CET
Last Seen                     2014-01-16 16:34:33 CET
Local ID                      ae9ab1bc-7815-4be2-99a9-b0d31d139132

Raw Audit Messages
type=AVC msg=audit(1389886473.709:491): avc:  denied  { write } for  pid=2664 comm="Xorg" name="/" dev="tmpfs" ino=10795 scontext=system_u:system_r:bumblebee_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=dir


type=AVC msg=audit(1389886473.709:491): avc:  denied  { remove_name } for  pid=2664 comm="Xorg" name=".X8-lock" dev="tmpfs" ino=30300 scontext=system_u:system_r:bumblebee_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=dir


type=AVC msg=audit(1389886473.709:491): avc:  denied  { unlink } for  pid=2664 comm="Xorg" name=".X8-lock" dev="tmpfs" ino=30300 scontext=system_u:system_r:bumblebee_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=file


type=SYSCALL msg=audit(1389886473.709:491): arch=x86_64 syscall=unlink success=yes exit=0 a0=81d260 a1=4 a2=0 a3=1f50cd0 items=0 ppid=493 pid=2664 auid=4294967295 uid=0 gid=1001 euid=0 suid=0 fsuid=0 egid=1001 sgid=1001 fsgid=1001 ses=4294967295 tty=(none) comm=Xorg exe=/usr/bin/Xorg subj=system_u:system_r:bumblebee_t:s0 key=(null)

Hash: Xorg,bumblebee_t,tmp_t,dir,write

Additional info:
reporter:       libreport-2.1.11
hashmarkername: setroubleshoot
kernel:         3.12.7-300.fc20.x86_64
type:           libreport