VirtualBox Guest Additions 5.2.4 on Tiny Core 8.2

[dspence]

Hi all,

I'm trying to get the VirtualBox Guest Additions for VirtualBox 5.2.4 running on Tiny Core 8.2.1.

The shared folders were no problem, and the mouse integration seems to work, but I haven't managed to get anything else working so far.

The shared clipboard does work sometimes right after I build the Guest Additions, but not after a reboot, so I must be missing something from the extension I'm making.

Have any of you managed to get this to work?  I really need the shared clipboard.  The window resizing would also be a big plus but I can live without it.

[dspence]

Okay, I have the shared clipboard working now.  Still no screen resizing, but the vboxvideo module isn't running and maybe I need that one.

[dspence]

I can't load vboxvideo.ko because
insmod: error inserting 'vboxvideo.ko': -1 Unknown symbol in module

There are 102 missing symbols overall.  All of them start with ttm_ or drm_:

Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol ttm_bo_mmap (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_framebuffer_cleanup (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_global_item_unref (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_open (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_fb_helper_single_add_all_connectors (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_fb_helper_init (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_poll (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_fb_helper_debug_enter (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol drm_mode_object_find (err 0)
Jan 17 15:37:43 box user.warn kernel: vboxvideo: Unknown symbol ttm_bo_global_release (err 0)
...

Does anyone know what's going on?

[dspence]

Okay, I was missing extension graphics-4.8.17-tinycore.tcz, which provides drm.ko and ttm.ko.  The vboxvideo.ko module loads now, and I can resize the window (but it doesn't do a nice job - I have to reboot after setting the size).

The "Seamless Mode" is now available in the VirtualBox menu, but it doesn't work.

This is probably good enough for my needs.