Unable to run TV13 without display manager, even when using tar archive

I'm not using a display manager, I run startx directly.

According to this thread, Teamviewer should be able to run without display manager if I download and use the tar archive, but unfortunately the GUI still doesn't start.

$ ./teamviewer

Init...
CheckCPU: SSE2 support: yes
Checking setup...
Launching TeamViewer ...
Starting network process (no daemon)
Network process started (7737)
Launching TeamViewer GUI ...

Logs:

2018/01/08 00:10:32.508  7737 139992786697152 N   NetWatchdog: Internet is now connected
2018/01/08 00:10:32.509  7737 139992786697152 N   NetWatchDogLinux: initialized network manager connection
2018/01/08 00:10:32.509  7737 139992786697152 N   RemoteSettingsMDRelationshipWatchDog: DEVICE ISN'T A MANAGED DEVICE
2018/01/08 00:10:32.509  7737 139992059844352 N   RemoteSettingsStore: Cleanup all policies.
2018/01/08 00:10:32.509  7737 139992786697152 N   RemoteSettingsStoreListener: Establish connection.
2018/01/08 00:10:32.510  7737 139992059844352 N   RemoteSettingsStore::LoadLastReceivedPolicies : Storage Entry Remote_Settings_TVClientSetting_Policy empty
2018/01/08 00:10:32.510  7737 139992786697152 N   Using IPC-Port 5940
2018/01/08 00:10:32.510  7737 139992059844352 N   RemoteSettingsMDRelationshipWatchDog: DEVICE ISN'T A MANAGED DEVICE
2018/01/08 00:10:32.510  7737 139992786697152 N   Updated sessions: 
2018/01/08 00:10:32.510  7737 139992786697152 N   UpdateOnlineState newOnlineValue 0
2018/01/08 00:10:32.510  7737 139992786697152 N   UpdateOnlineState newOnlineValue 0
2018/01/08 00:10:32.511  7737 139991422326528 N   Using systemd-logind for suspend/resume monitoring
2018/01/08 00:10:33.046  7685 139980245552256 G   Logger started.
2018/01/08 00:10:33.046  7685 139980245552256 G   Found 0 core dump files ...
2018/01/08 00:10:33.047  7685 139980245552256 G   systemd: logind service available
2018/01/08 00:10:33.049  7685 139980245552256 G   systemd: New seat seat0 [path=/org/freedesktop/login1/seat/seat0, activeSession='c1', canGraphical=1, canTTY=1, canMultiSession=1]
2018/01/08 00:10:33.049  7685 139980245552256 G   LogindSessionInfo: New session LogindSessionInfo [id=c1 user=darwin state=user active=1 reliable=1 infoId=1591159457] [path=/org/freedesktop/login1/session/c1 TTY=tty1 seat=seat0 display= vtnr=1 owner=[SysUser: darwin [uid=1000, gid=989 home=/home/darwin gecos= shell=/bin/zsh]] idle=1(1515325702526228) active=1 type=tty class=user state=active timestamp=1515325710017432 service=login defaultCG= leader=755 audit=0 remote=0 rHost= rUser= killProc=0]
2018/01/08 00:10:33.051  7685 139980245552256 G   SysSessionInfoManager: observing sessions from logind is marked as reliable
2018/01/08 00:10:33.051  7685 139980245552256 G   SysSessionInfoManager: Session Information provided by VT [priority: 2]
2018/01/08 00:10:33.051  7685 139980245552256 G!  FrameBuffer: Cannot access /dev/fb0, frame buffer support unavailable
2018/01/08 00:10:33.052  7685 139980245552256 G   SysSessionInfoManager: own session cache set to '4294967295'
2018/01/08 00:10:33.052  7685 139980245552256 G   Running on Qt 5.10.0
2018/01/08 00:10:33.066  7685 139980245552256 G   Initialised XRandR extension 1.5 (base=89 error=147)
2018/01/08 00:10:33.083  7685 139980245552256 G   MonitorInfo: [XRandR 1.2] CRTC eDP-1 3840x2160@60Hz [0, 0, 3840, 2160] - 1
2018/01/08 00:10:33.083  7685 139980245552256 G   MonitorInfo: [XRandR 1.2] CRTC 1 has no outputs
2018/01/08 00:10:33.083  7685 139980245552256 G   MonitorInfo: [XRandR 1.2] CRTC 2 has no outputs
2018/01/08 00:10:33.083  7685 139980245552256 G   Virtual Desktop [0, 0, 3840, 2160]
2018/01/08 00:10:33.084  7685 139980245552256 G!! MonitorInfo: WorkingArea: Property error 14 (0), Errorcode=11
2018/01/08 00:10:33.090  7685 139980245552256 G   InterProcessBase::SecureNetwork created
2018/01/08 00:10:33.092  7685 139980245552256 G   AutoLogin::Login: enabled: 1
2018/01/08 00:10:33.092  7685 139980245552256 G   WindowsSessionStateManager(0x18d1540) state 0
2018/01/08 00:10:33.093  7685 139980245552256 G!!!Own session could not be resolved, unable to startup, Errorcode=11
2018/01/08 00:10:33.093  7685 139980245552256 G!! ConfigurationHub::HandleRegistrationResponse(): registering for feature 5 failed with error 2, Errorcode=11
2018/01/08 00:10:33.093  7685 139980245552256 G!! ConfigurationHub::HandleRegistrationResponse(): registering for feature 6 failed with error 2, Errorcode=11
2018/01/08 00:10:33.093  7685 139980245552256 G!! ConfigurationHub::HandleRegistrationResponse(): registering for feature 9 failed with error 2, Errorcode=11
2018/01/08 00:10:33.093  7685 139980245552256 G!! ConfigurationHub::HandleRegistrationResponse(): registering for feature 10 failed with error 2, Errorcode=11
2018/01/08 00:10:33.093  7685 139980245552256 G   interprocessbase::SecureNetwork destroyed
2018/01/08 00:10:33.095  7685 139980245552256 G   Shutting down System DBus

Result of checking dependencies:

$ ./tv-setup checklibs

    -=-   TeamViewer tar.xz check   -=-

  In order to use the tar.xz version of TeamViewer,
  you have to make sure that the necessary libraries are installed.

    Writing raw output to /home/darwin/Downloads/teamviewer/logfiles/DependencyCheck.log

 Analyzing dependencies ...

        All dependencies seem to be satisfied!