[gentoo-user] virtualbox: no x-server after kernel upgrade to 4.12.12-gentoo

[Alexander Puchmayr]

Hi there,

I'm using a gentoo-guest inside a virtual box on a Win10 host. The last 
somewhat working combination was kernel 4.4.39/virtualbox-5.1.24.

When I update to kernel 4.12.12, the X-Server does not work anymore (I've also 
tried with 4.9.xx, same result -- no X)

I used genkernel to compile the kernel, copied the previous 4.4.39-config from 
/proc/config.gz to /usr/src/linux-4.12.12-gentoo via zcat, and did no further 
changes; so nothing relevant should be changed, at least to my knowledge.

After compilation of the kernel, required packages have been re-emerged:
- app-emulation/virtualbox-guest-additions
- x11-drivers/xf86-video-virtualbox

Booting with 4.12.12:
- sddm crashes with segfaults
- Starting X from the command line: X complains missing EGL_MESA_drm 
EGL_MESA_drm_image required.
: CommandLine Error: Option 'asan-instrument-assembly' registered more than 
once!
LLVM ERROR: inconsistency in registered CommandLine options
[??? No idea where this comes from :-( ]


cat /var/log/Xorg.0.log
[   793.159] (II) LoadModule: "vboxvideo"
[   793.159] (II) Loading /usr/lib64/xorg/modules/drivers/vboxvideo_drv.so
[   793.159] (II) Module vboxvideo: vendor="Oracle Corporation"
[   793.159]    compiled for 1.19.3, module version = 1.0.1
[   793.159]    Module class: X.Org Video Driver
[   793.159]    ABI class: X.Org Video Driver, version 23.0
[   793.159] (**) Load address of symbol "VBOXVIDEO" is 0x7f3840a24380
[   793.160] (II) VBoxVideo: guest driver for VirtualBox: vbox
[   793.160] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[   793.160] (II) FBDEV: driver for framebuffer: fbdev
[   793.160] (II) VESA: driver for VESA chipsets: vesa
[   793.160] (II) vboxvideo: kernel driver found, not loading.		<-- !!!!!!
[   793.160] (II) vboxvideo: kernel driver found, not loading.
[   793.160] (II) modeset(0): using drv /dev/dri/card0
[   793.160] (II) Loading sub module "glamoregl"
[   793.160] (II) LoadModule: "glamoregl"
[   793.160] (II) Loading /usr/lib64/xorg/modules/libglamoregl.so
[   793.163] (II) Module glamoregl: vendor="X.Org Foundation"
[   793.163]    compiled for 1.19.3, module version = 1.0.0
[   793.163]    ABI class: X.Org ANSI C Emulation, version 0.4
[   793.163] (II) glamor: OpenGL accelerated X.org driver based.
[   793.217] (II) glamor: EGL version 1.4 (DRI2):
[   793.217] EGL_MESA_drm_image required.
[   793.218] (EE) modeset(0): glamor initialization failed

dmesg shows:
5.269630] VBoxService 5.1.24 r117012 (verbosity: 0) linux.amd64 (Sep 15 2017 
16:09:26) release log
              00:00:00.000046 main     Log opened 
2017-09-15T15:23:25.220990000Z
[    5.269691] 00:00:00.000133 main     OS Product: Linux
[    5.269717] 00:00:00.000165 main     OS Release: 4.12.12-gentoo
[    5.269740] 00:00:00.000191 main     OS Version: #1 SMP Fri Sep 15 15:33:45 
CEST 2017
[    5.269772] 00:00:00.000213 main     Executable: /usr/sbin/vboxguest-
service
               00:00:00.000214 main     Process ID: 4275
               00:00:00.000215 main     Package type: LINUX_64BITS_GENERIC 
(OSE)
[    5.272160] 00:00:00.002532 main     5.1.24 r117012 started. Verbose level 
= 0
[7.780006] vboxvideo 0000:00:02.0: fb0: vboxdrmfb frame buffer device

Booting old 4.4.39 kernel    [Just select old kernel in grub]
- sddm shows login screen
- /var/log/Xorg.0.log shows lots of lines regarding VBoxVideo driver.
- dmesg does not show the  vboxvideo line from above

Obviously, something is going terribly wrong here, and I'm getting stuck as I 
do not have any Idea where to start. The only thing that changed is a kernel 
upgrade and a rebuild of the virtual box modules. 

Any ideas?

Thanks in advance,
	Alex