Virtualbox Headless Frontend Has Stopped Working Windows 7
Angie Troia
Generally speaking, loading failure is probably caused by many reasons. Thus, for different reasons, you may face the problem that the virtual box stops working at 50%, 94%, 30%, etc. So, if you've encountered the corresponding issues when launching LDPlayer, try the following methods to fix loading failure for different situations.
If this is your first time launching LDPlayer and you encounter the issue that the virtual box stops at 94%, the main reason is probably that some of the emulator files have been damaged due to the improper emulator installation operations from your computer. Under the circumstances, the best solution is to recreate a new LDPlayer instance.
If none of the above methods work, open the C:\Program Files\ folder, find the dnplayerext2 folder, clear the entire folder and download the emulator again if you are running LDPlayer 3; if you are running LDPlayer 4, find the ldplayerbox folder under the C:\Program Files folder, clear it and download the emulator again.
If this is not your first time running LDPlayer, the loading failure may be caused by the incompatibility between LDPlayer and the software on your computer including Graphics Driver, Virtual Technology, antivirus software and so on. In such situation, you can try the following methods to fix the problem.
VT is a very essential part that can make better use of the resources of the CPU on your computer to boost the performance of emulator. If the VT is disabled on your system, you can open it to solve the loading failure issue. You can learn more details about VT from this articleHow to enable VT (Virtualization Technology).
Besides the VT-related issue, the out-of-date graphics driver may also cause the loading failure issue with LDPlayer. Thus, you can check this article: How to update the graphics driver to know more details about graphics driver update.
Generally, if you find that the virtual box stops working at 50% while you are loading LDPlayer, the most likely reason is that the graphics driver on your computer has crashed or been damaged. There are also three ways for you to fix this issue.
First of all, when the virtual box stops at 50%, you need to open the diagnostic information from the menu in the upper right corner of the emulator window. If the "OpenGL" option is on the 1.1.0 version or blank, it means the graphics driver on your system has crashed.
You can also check whether the VT is enabled on your computer through diagnostic information. If the VT is disabled, try to open it. This article: How to enable VT (Virtualization Technology) may give you some help.
When you are loading LDPlayer with some antivirus software and computer games running in background, the antivirus software and PC games may hinder the running process of LDPlayer. Hence, turning off those programs and restart LDPlayer may help you fix the problem.
In addition to the above situations, you may also face that the virtual box headless frontend has stopped working at 30%, 71%, 86% and so on. Never mind, all the above methods can be applied to those situations.
If it is the case that the subsequent opened LDPlayer is stuck at 94% when multiple LDPlayer are opened, you can try to close the LDPlayer that was stuck at 94% and create another new LDPlayer.
If the newly created one cannot be opened normally, you need to check whether it is overflow problem of temporary storage of CPU, memory, or graphics card.
If there is an overflow of occupancy, you need to check whether there is a problem with the parameter settings of the emulator. For details, please refer to: How to open as many instances of LDPlayer as possible.
If it still cannot be opened normally after setting the parameter, it may be a bottleneck in computer hardware equipment, or some hardware equipment has energy consumption limits. In this case, you need to replace hardware equipment or turn off its energy consumption limit to solve this problem.
VirtualBox is a hypervisor used to run operating systems in a special environment, called a virtual machine, on top of the existing operating system. VirtualBox is in constant development and new features are implemented continuously. It comes with a Qt GUI interface, as well as headless and SDL command-line tools for managing and running virtual machines.
In order to integrate functions of the host system to the guests, including shared folders and clipboard, video acceleration and a seamless window integration mode, guest additions are provided for some guest operating systems.
To compile the VirtualBox modules provided by virtualbox-host-dkms, it will also be necessary to install the appropriate headers package(s) for your installed kernel(s) (e.g. linux-lts-headers for linux-lts). [1] When either VirtualBox or the kernel is updated, the kernel modules will be automatically recompiled thanks to the DKMS pacman hook.
virtualbox-host-modules-arch and virtualbox-host-dkms use systemd-modules-load.service to load VirtualBox modules automatically at boot time. For the modules to be loaded after installation, either reboot or load the modules once manually; the list of modules can be found in /usr/lib/modules-load.d/virtualbox-host-modules-arch.conf or /usr/lib/modules-load.d/virtualbox-host-dkms.conf.
It is also recommended to install the virtualbox-guest-iso package on the host running VirtualBox. This package will act as a disc image that can be used to install the guest additions onto guest systems other than Arch Linux. The .iso file will be located at /usr/lib/virtualbox/additions/VBoxGuestAdditions.iso, and may have to be mounted manually inside the virtual machine. Once mounted, you can run the guest additions installer inside the guest. For Arch Linux guest also see VirtualBox/Install Arch Linux as a guest#Install the Guest Additions.
In order to avoid having to install the guest system manually, some operating systems support unattended installation. This allows the user to configure the system to be installed in VirtualBox's interface prior to starting the machine. At the end of the setup process, the operating system is installed without requiring any further user interaction. This feature requires the virtualbox-unattended-templatesAUR package.
The Oracle VM VirtualBox Extension Pack provides additional features and is released under a non-free license only available for personal use. To install it, the virtualbox-ext-oracleAUR package is available, and a prebuilt version can be found in the seblu repository.
If you prefer to use the traditional and manual way: download the extension pack manually and install it via the GUI (File > Tools > Extension Pack Manager) or via VBoxManage extpack install , make sure you have a toolkit like Polkit to grant privileged access to VirtualBox. The installation of extension pack requires root access.
One of the non-free extension pack features is support for the Remote Desktop Protocol (RDP). This part of functionality can also be obtained with the open source VNC Extension Pack, by installing the virtualbox-ext-vnc package.
A security feature in Wayland (i.e. when using GDM) disallows VirtualBox to grab all keyboard input. This is annoying when you want to pass window manager shortcuts to your guest operating system. It can be bypassed by whitelisting VirtualBox:
VirtualBox does not support QEMU's QCOW2 disk image format. To use a QCOW2 disk image with VirtualBox you therefore need to convert it, which you can do with qemu-img. qemu-img can convert QCOW to / from VDI, VMDK, VHDX, RAW and various other formats (which you can see by running qemu-img --help).
VirtualBox offers simulation of TRIM in VDI files via an experimental "discard" attachment option. This option is undocumented and can be accessed by commandline or .vbox file editing. When enabled, TRIM commands from the guest operating system causes the corresponding part of the VDI file to be compacted away.
If you are running out of space due to the small hard drive size you selected when you created your virtual machine, the solution adviced by the VirtualBox manual is to use VBoxManage modifyhd. However this command only works for VDI and VHD disks and only for the dynamically allocated variants. If you want to resize a fixed size virtual disk disk too, read on this trick which works either for a Windows or UNIX-like virtual machine.
To get the storage controller name and the port number, you can use the command VBoxManage showvminfo virtual_machine_name. Among the output you will get such a result (what you are looking for is in italic):
If you think that editing a simple XML file is more convenient than playing with the GUI or with VBoxManage and you want to replace (or add) a virtual disk to your virtual machine, in the .vbox configuration file corresponding to your virtual machine, simply replace the GUID, the file location and the format to your needs:
The information about path to harddisks and the snapshots is stored between .... tags in the file with the .vbox extension. You can edit them manually or use this script where you will need change only the path or use defaults, assumed that .vbox is in the same directory with a virtual harddisk and the snapshots folder. It will print out new configuration to stdout.
UUIDs are widely used by VirtualBox. Each virtual machines and each virtual disk of a virtual machine must have a different UUID. When you launch a virtual machine in VirtualBox, VirtualBox will keep track of all UUIDs of your virtual machine instance. See the VBoxManage list to list the items registered with VirtualBox.
If you cloned a virtual disk manually by copying the virtual disk file, you will need to assign a new UUID to the cloned virtual drive if you want to use the disk in the same virtual machine or even in another (if that one has already been opened, and thus registered, with VirtualBox).
If you plan to use your virtual machine on another hypervisor or want to import in VirtualBox a virtual machine created with another hypervisor, you might be interested in reading the following steps.
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