virtualbox.org

Host platform: solaris 11.4 with virtualbox 6.0.0r3
Guest platform: slackware 14.2

Video adapter set to VMSVGA does not work (screen is all black), VBoxVGA and VBoxSVGA seem to work

Guest additions compile fine (Slackware was installed with the "D" series for development tools gcc, perl, make etc.)

root@phobos:~# /mnt/VBoxLinuxAdditions.run 
Verifying archive integrity... All good.
Uncompressing VirtualBox 6.0.0_BETA3 Guest Additions for Linux........
VirtualBox Guest Additions installer
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modul
es.  This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup <version>
VirtualBox Guest Additions: Building the modules for kernel 4.4.14.
VirtualBox Guest Additions: Starting.

After building the guest additions:

root@phobos:/home/stes# lsmod | grep vbox
vboxvideo              33358  0
vboxsf                 34660  0
ttm                    81822  2 vmwgfx,vboxvideo
drm_kms_helper        118940  2 vmwgfx,vboxvideo
drm                   322902  5 ttm,drm_kms_helper,vmwgfx,vboxvideo
vboxguest             295673  2 vboxsf

File Manager works fine: after creating a session

root@phobos:/home/stes# ps -ef | grep VBox
root       557     2  0 20:29 ?        00:00:00 [iprt-VBoxWQueue]
root      1083     1  0 20:29 ?        00:00:00 /usr/sbin/VBoxService --pidfile /var/run/vboxadd-service.sh
stes      1122  1083  0 20:30 ?        00:00:00 /opt/VBoxGuestAdditions-6.0.0_BETA3/sbin/VBoxService guestsession --session-id=1 --session-proto=2 --user stes
root      1135  1117  0 20:31 pts/0    00:00:00 grep VBox