Xorg crash

[BertN45]

The first login of my Xubuntu 23.10 VBox VM fails. The second login seems OK, but all programs I start at login are started twice, like e.g conky. It results in 100% cpu load on one core.
The system displays an error message for ~2 seconds and it says something like: "VBoxclient can't connect to X server".
The error also occurs on a fresh install.

Some additional info:
- The login loop also happens on Ubuntu 23.10 VM when started with Xorg, but here it keeps looping.
- A comparable error occurs on Ubuntu Unity 23.10 VM, on the first screen no login box will be presented. On the second boot the login screen is presented and the login seems normal.

Note that the same Vbox release 7.0.12 has no issues with flavors of 22.04 LTS nor with 20.04 LTS.

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.5.0-9.9-generic 6.5.3
Uname: Linux 6.5.0-9-generic x86_64
ApportVersion: 2.27.0-0ubuntu5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: XFCE
Date: Fri Oct 20 20:55:33 2023
DistUpgraded: Fresh install
DistroCodename: mantic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 VMware SVGA II Adapter [15ad:0405] (prog-if 00 [VGA controller])
   Subsystem: VMware SVGA II Adapter [15ad:0405]
InstallationDate: Installed on 2023-05-10 (163 days ago)
InstallationMedia: Xubuntu 23.10 "Mantic Minotaur" - Daily amd64 (20230510)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
 /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
 /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 480M
     |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
MachineType: {report['dmi.sys.vendor']} {report['dmi.product.name']}
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-9-generic root=UUID=68afebf4-295a-4f3d-b521-36f13d8e060d ro quiet splash
SourcePackage: xorg
Symptom: display
Title: Xorg crash
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:sku:
dmi.product.family: Virtual Machine
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.115-1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.2.1-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-3ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

[Daniel van Vugt (vanvugt)]

I can see bug 1861609 happening in XorgLogOld.txt, but also you seem to have a few vbox-related kernel crashes. Overall I think this is bug 1861609 which seems to be common on VirtualBox.

The matter of two instances of startup programs is a separate issue, perhaps a lightdm bug.

[BertN45 (lammert-nijhof)]

I try it again, this error has nothing to do with bug #1861609. In 2020 I was running Xubuntu 20.04 and Virtualbox 6.1. This error only occurs in Xubuntu 23.10 and it does not occur in the development edition of Xubuntu 24.04.

I will add journalctl -b as attachment and indeed it is related to vboxguest.

nov 08 13:15:51 VM-Xubuntu-2310 kernel: vboxguest: loading out-of-tree module taints kernel.
nov 08 13:15:51 VM-Xubuntu-2310 kernel: vboxguest: module verification failed: signature and/or required key missing - tainting kernel?field.comment=