Questions tagged [qemu]
QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that performs hardware virtualization.
826
questions
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Ryzen 3000/5000 CPU Lockup on ASRock X470D4U
Ahoy ahoy friends.
Currently i am running my system, using an ASRock Rack X470D4U motherboard and Ryzen 2700X CPU.
I use Debian 11 with 5.10 Kernel and KVM + Libvirt in order to run my 30 VM Guests.
...
3
votes
1answer
36 views
+50
Clean way of running virt-install with an iso file that's in your home directory that user qemu can't access
I have a script that automatically creates and runs a VM. That script is used by many people. You basically call the script giving it some information like what PCI or USB devices you want to pass ...
1
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0answers
31 views
How to passthrough GPU in QEMU-KVM? Failing to start
I have tried countless guides and always ended up with the same result, so it's time I ask those who know what's going on.
I have all virtualisation IOMMU etc enabled in my BIOS. I am running the VM ...
0
votes
0answers
25 views
Running x86_64 binaries on arm64
I have been searching for a simple way to run x86_64 binaries on arm64 GNU/Linux.
I've tried qemu-user:
qemu-x86-64 -L /usr/x86-64-linux-gnu /opt/x86_64program, but I'm getting
/lib/libc.so.6: version ...
0
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0answers
9 views
in kubuntu 20.10 qemu+kvm+ovmf uefi does not work
I have repeatedly all downloaded and reinstalled.
I have written:
/usr/bin/kvm -bios /usr/share/ovmf/OVFM.fd -m 5G -hda /dev/sdb
or
/usr/bin/kvm -bios /usr/share/ovmf/OVFM.fd -m 5G -drive file=/dev/...
1
vote
0answers
15 views
QEMU webcam passthrough from macOS host to Xubuntu guest?
I am trying to pass my (MBP 2019) camera as a usb device to my VM (Xubuntu).
I've tried the following, to no avail.
sudo qemu-system-x86_64 -accel hvf -boot menu=on -drive file=X.img -m 6G -cpu host -...
0
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0answers
12 views
Capturing Integrated Graphics Card for QEMU Virtual Machine Passthrough
I am currently trying to create a VM setup on an Ubuntu 20.04. Particularly, I was working on passing through the integrated GPU down to the guest.
When running lspci -nnk, I get the following
00:00.0 ...
0
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0answers
15 views
How to apply qemu:env command line to virt-manager? (libvirt)
I need to apply this fix
<qemu:env name="MESA_LOADER_DRIVER_OVERRIDE" value="i965"/>
to my virt-manager VM.
However, I don't know where to put it.
I tried editing the XML ...
1
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0answers
15 views
KVM Ubuntu-20.04 Host, win-10 guest issues (CPU/GPU)
System specs: AMD ryzen 5 4000 series with AMD Radeon graphics, its a laptop so probably integrated graphics.
Hi so whenever i try and boot my windows 10 VM i get errors such as failed to load a ...
0
votes
1answer
15 views
libvirt user access stopped working
I'm using virsh and virt-manager to manage some qemu/kvm VMs on an otherwise vanilla CentOS machine.
Our admins' user accounts are given the libvirt group. This had worked for a long time, but ...
1
vote
1answer
20 views
How to merge common parts of qemu qcow2 disks
I have a qemu image B.qcow2 that is a snapshot of A.qcow2.
I created a copy of B.qcow2 by using cp B.qcow2 C.qcow2 and then worked on both B.qcow2 and C.qcow2 independently. Thus, B.qcow2 and C.qcow2 ...
0
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0answers
10 views
windows vm on ubuntu quemu host
after seeing several guides on the internet my confusion has become stellar!
What I would like to be able to do is a windows virtual machine (hosting a website) on ubuntu host (18.04) server / qemu.
I ...
0
votes
1answer
39 views
Qemu config file error “Invalid parameter host”
I'm new to QEMU and currently playing around with QEMU config file to understand how it works. I tried to put all the options of my simple QEMU command line
sudo qemu-system-x86_64 -cpu host -enable-...
0
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0answers
28 views
Attach a drive to RISCV-64 Linux in qemu does not work
based on this instruction
Set Up The Environment for RISCV-64 Linux I've created RISCV-64 Linux Image on arch Linux(I did not compile the qemu because there was a binary package) and I want to attach ...
1
vote
1answer
52 views
How to update the firmware of a Cardo Packtalk Slim (or Freecom) on linux (natively or through a virtual machine)?
The firmware updating software for Cardo bluetooth communication systems (Packtalk, freecom,...) are only available for Windows and Mac OS. I do not have these OSes running natively. Is it ...
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2answers
61 views
Boot Ubuntu ISO under qemu
Probably a very simple issue: I'm trying to boot the offical Ubuntu 20.04.2 ISO image under qemu. For this purpose I've first created a disk image:
qemu-img create ubuntu-20.04.2.0.img 10G
And then ...
0
votes
0answers
21 views
Dynamic screen resizing on QEMU (without virt-manager)
I'm running QEMU (6.0.0) on bspwm (Arch Linux), when i launch it alone on a workspace, like this:
________________________________________
| ____________________________________ |
| | ...
1
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0answers
22 views
What is Virtual Serial Port in QEMU?
Ubuntu 20.04 both on host and guest.
I'm new to QEMU and trying to set up guest-host communication via serial port. The QEMU documentation says that -serial dev option:
Redirect the virtual serial ...
0
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0answers
7 views
how can I programmably config the qemu machine's firmware settings?
On centos there is no OVMF_CODE.fd but only OVMF_CODE.secboot.fd But I need to turn off the secure boot due to some drivers. I can manually disable the secure boot. But I wonder how can I do this ...
0
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0answers
37 views
Unexpected enum value 0 for virDomainDeviceAddressType emulating raspi3 on jetson nano with virt-install
it's more of a challenge,to be able to emulate the raspberry pi 3 on my Jetson nano (aarch64) using virt-install. I'm learning how to do that by reading heavily here :
https://github.com/dhruvvyas90/...
1
vote
1answer
87 views
How to fix “qemu-system-x86_64: symbol lookup error: /lib/x86_64-linux-gnu/libvirglrenderer.so.0: undefined symbol: drmPrimeHandleToFD”?
I want to run qemu on Debian Buster, and have therefore installed the qemu-system-x86_64 package.
The issue is that when I run:
qemu-system-x86_64 \
-m 128M \
-cpu kvm64,+smep,+smap \
-...
0
votes
0answers
11 views
How do I block host mouse input to QEMU/KVM machines like VMware Player
VMware Player has this functionality where when you press Ctrl+Alt it will block any further keypresses/mouse movements to the guest until you click within the guest. This allows you to mouse over the ...
0
votes
0answers
47 views
Mouse wheel scrolling is sticky in QEMU/KVM guest
I am running an Antix guest in QEMU/KVM.
When I use the mouse wheel to scroll inside the guest, and I change the scrolling direction (e.g. from down to up), the next two ticks of the wheel are ignored....
3
votes
0answers
20 views
Defunct process on every boot, if I don't kill it, it hangs during shutdown
Every time I boot my PC (Ubuntu 20.04.2 LTS), I have a defunct process:
johan@johan-desktop:~$ ps -AF | grep qemu
libvirt+ 1596 1 0 0 0 15 07:17 ? 00:00:00 [qemu-system-x86] &...
1
vote
1answer
183 views
How share folder with QEMU between MacOS host and Linux guest?
I am trying to run a Linux Debian with qemu with MacOS Big Sur host.
Unfortunately virtfs doesn't work on Mac and there is no easy alternative that I have found.
Is there a way to share folders?
...
0
votes
0answers
29 views
Difference between “kernel image” and “disk image”
I'm trying to boot Ubuntu on the gem5 simulator. The gem5 simulator expects 2 binaries to boot from: a "disk image" and a "kernel image". When I've booted Linux with QEMU or ...
2
votes
0answers
56 views
When using Spice and remote-viewer with multiple virtual monitors, stuck on “Waiting for display 2” indefinately
Following some research, I learned that the proper method to setup multiple virtual monitors with virt-manager, libvirtd, and qemu is to use spice (link, link, link). At first, I added three total ...
0
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0answers
84 views
audio: Unknown audio driver `jack' audio: warning: Using timer based audio emulation while I'm trying to configure pipewire / jack with a qemu VM
Does anyone run pipewire with their VFIO setup? I want to stop using pulseaudio but I'm having issues with the correct configuration of pipewire (and jack). My goal is to hear sounds inside the Ubuntu ...
0
votes
1answer
21 views
qemu - where are modules pulled from if using -kernel?
Where does qemu pull modules from when using a custom-built kernel (using -kernel)? Will the kernel try to find them in the guest FS or is the whole linux/qemu setup smart enough to realize that ...
0
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0answers
36 views
Improve Bus Speed/Throughput of a Qemu Guest (with KVM disabled)
I have an IBM POWER with 96 cores and 512GB. Host operating system is Debian ppc64. Qemu-5.2 (qemu-system-x86_64) is running a Debian x86 guest. No KVM because they're different architectures.
Debian ...
0
votes
1answer
22 views
How to prevent from leaving QEMU
The command I use on debian:
qemu-system-x86_64 -smp cores=8 --enable-kvm -m 2048 -vga cirrus -hda freedos.img -full-screen
There are 3 ways to leave QEMU:
Shortcut "ctrl+alt+2" will switch ...
1
vote
1answer
53 views
run unattended scripts with KVM/Qemu in Live CD environment
I am trying to set up an automated testing environment for these Linux installer scripts using KVM/Qemu guests.
Currently it only has end-to-end support for bootstrapping a Debian system from a Debian ...
0
votes
0answers
34 views
KVM CPU compatibility requirements for live migration on aarch64
I'm trying to understand the CPU (and possibly kernel) requirements for a successful live migration of a KVM VM (OpenWRT) on aarch64 in order to decide on which SBC I should get as a second host.
My ...
0
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0answers
26 views
How to get guest (qemu and virt-manager) to connect to WAN, with host being behind pfsense/opnsense router?
Can't figure out after 2 days of trying. No leases on the router, nothing on firewall log. Tried router and nat networking. Ideally I want to dedicate offline NICs on host to VMs, only allowing access ...
0
votes
0answers
64 views
VM shutting down as soon as it has lauched | qemu-system-x86_64: terminating on signal 15 from pid 1052
I have a freshly built Debian host. I am trying to set a Window 10 VM with passthroughs.
When I start the VM from Virtual Machine Manager, the screen goes black for a few seconds as I am passing ...
0
votes
0answers
13 views
Understanding sysinfo Ouput for Custom Init Process
With qemu: qemu-system-x86_64 -s -S -enable-kvm -m 512M -drive format=raw,file=myos.img -kernel {5.11.6-kernel} -append "root=/dev/sda init=/sbin/myint nokaslr"
The C code (omitted libc ...
0
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0answers
33 views
How get networking working in QEMU VM on macOS XI
I'm trying to run Linux VMs on macOS XI using QEMU which works just fine.
I'd also like to access the internet from the VM and communicate with it via SSH but networking does not work OOTB like it ...
0
votes
0answers
55 views
Unable to complete install: 'unsupported configuration: unknown protocol type 'file'' error
I've been trying to create a windows vm with qemu and kvm through virt-manager in Linux Mint. However, I am stuck running into this error whenever I try to use the Windows ISO.
Unable to complete ...
0
votes
0answers
30 views
No keyboard on windows 10 guest after shutdown/restart from the windows itself
The operating system is RHEL8.2, and the virtualization stack is kvm, qemu, virt-viewer and SPICE. On the windows guest the virtio-win drivers are installed.
My problem is that sometimes after ...
0
votes
1answer
60 views
How to enable zstd for your qcow2 files
In QEMU 5.1 zstd compression of your qcow2 files was introduced.
But it's not described in the manual for qemu-img.
How do you enable it?
0
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0answers
23 views
Intel GPU accelerated Virtual Machine
Have anyone came across this problem when running a Windows VM with Intel GVT-g:
Before installing the driver as described from the driver note here: https://github.com/intel/gvt-linux/wiki/...
0
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0answers
29 views
Is there any Rossetta 2 (SBT Static Binary Translation) alternative on Linux?
On an Apple Silicon chip such as M1 (ARMv8), x86 instructions can be translated statistically by Rossetta 2 when the program runs for the first time. It's fast. Because Rossetta 2 does the SBT (Static ...
2
votes
3answers
268 views
Linux installation not able to find the first partition of the disk during the boot up
I have an hard disk image of an openSUSE installation from a x86-64 machine which I no longer have access to. I'm trying to boot from this raw disk using quemu. If I start the virtual machine with for ...
0
votes
0answers
32 views
How to auto-open virt-manager and auto-start vm in fullscreen without asking “inhibit shortcuts” in one command when PC boot?
As title, I install virt-manager on Debian 11 to open an QEMU .img file. After PC boot, I want PC auto-start virt-manager in fullscreen and auto-start a VM without asking "inhibit shortcuts" ...
0
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0answers
18 views
Tricky emulation of custom kernel image using QEMU
thank you for viewing this question.
I have an SD image which contains 4 partitions:
U-boot and sys volume info
Only contains sys volume info
Empty
Root file system
After running file at the U-boot ...
0
votes
0answers
37 views
Writing an OS shutdown process for QEMU (xv6)
Background: I'm using QEMU to virtualize xv6-riscv on top of WSL2. I'm looking to create some sort of clean OS shutdown process reminiscent of Linux's exit command. Currently I'm using Ctrl-a x to ...
0
votes
1answer
69 views
How to understand qemu “-d int” flag output?
Where I can found documentation or explanation how to read and understand output of qemu log by flag "-d ..".
example
qemu-system-x86_64 -cdrom $(ISO_FILE) -serial stdio -m 1024 -d int
&...
1
vote
1answer
55 views
Can't move mouse cursor up on Qemu
I recently migrated an Ubuntu image from VirtualBox (dowloaded from https://practicalbinaryanalysis.com/) to qcow2 and run it under Qemu. It boots up smoothly, supports network and higher resolutions, ...
1
vote
0answers
102 views
QEMU on macOS: the background process gradually freezes if the QEMU window is not visible
I have a similar setup on a Windows 10 machine that doesn't have any such issues.
This tread about macOS version 10.15.2.
If the QEMU window is not visible (hidden, minimized or another application is ...
0
votes
0answers
32 views
How to compile Linux Kernel 0.95 and run it with QEMU?
I want to compile Linux Kernel 0.95 and run it with QEMU.
But I just found this (Linux Kernel 0.95 source code).
