All Questions
60
questions
0
votes
0
answers
35
views
Converting a virtual machine a standalone directory hosted on Ubuntu
A software platform I'm responsible for requires a minimal Ubuntu distribution with software that is partially integrated with the OS and uses TTY terminals. We've typically contained the OS in a ...
1
vote
1
answer
960
views
No login prompt in QEMU serial console
I'm running an Ubuntu Jammy Desktop VM in QEMU. The host system is also Ubuntu Jammy. The command is:
qemu-system-x86_64 \
-nodefaults \
-machine q35,accel=kvm \
-cpu host \
-smp 2 \
-m 2G \
...
- 113
0
votes
0
answers
761
views
Unable to disable the "INFO: task kworker/u8:3:116 blocked for more than 120 seconds" when booting Ubuntu on QEMU
I have a emulation hardware device which can take more than 120 seconds to run when booting.
I always got the following messages:
[ 242.914490] INFO: task kworker/u8:0:9 blocked for more than 120 ...
- 1
4
votes
1
answer
1k
views
Does QEMU on Linux Ubuntu 20.04.1 x86_64 have a memory leak?
We have a testbed for an OSv project that runs (5.15.0-72-generic - 20.04.1-Ubuntu - x86_64) the same instances a lot of time. The script for the execution of a single run is very simple and follows:
...
- 584
1
vote
1
answer
3k
views
Can't disconnect nbd device
I made an .qcow2 image and mounted it as described here:
https://bytefreaks.net/gnulinux/how-to-mount-a-qcow2-disk-image-that-does-not-contain-an-ubuntu-lvm-installation
But I have a problem with the ...
- 13
2
votes
1
answer
1k
views
KVM guest never grabs SUPER key or ALT+TAB keyboard shortcut
I run a KVM Ubuntu 20.04 LTS guest. My host is Ubuntu 22.04 LTS. Virtual Machine Manager is 4.0.0.
The guest doesn't grab the SUPER key or the ALT+TAB keys, so even in full screen mode, both SUPER and ...
- 3,196
0
votes
0
answers
42
views
I'm looking for a remote / networked kind of Terminal or something like this
let's think about this scenario:
Linux as host OS (I prefer Debian) and two different guest OSes, virtualized with qemu and kvm. The first one could be Fedora, the second one Arch.
The virtualized ...
- 549
0
votes
1
answer
985
views
How to remove an interface from virtual bridge in ubuntu?
ubuntu 20.04 KVM install
after I added the eth intfc to the virtual bridge I lost my SSH connection to the host. To recover, i figure I had to 'remove' the interface from the 'bridge' but it will not ...
- 245
1
vote
1
answer
227
views
Yocto/poky on QEMU: Incoming SSH works but no internet
I am trying to debug a Linux system built with Yocto using QEMU. I run both Yocto and QEMU under Ubuntu 22.04 that I run using WSL. The image I am using is core-image-full-cmdline.
For some reason, ...
- 325
0
votes
1
answer
678
views
libvirt-daemon-system-systemd : Depends: systemd-container
I'm following a tutorial on how to install Libvirt on Ubuntu 22.04. However I'm stuck at this step now:
$ sudo apt install -y qemu-kvm virt-manager libvirt-daemon-system virtinst libvirt-clients ...
1
vote
2
answers
1k
views
Yocto: Unable to run qemu in graphical mode
I built a standard qemu image with bitbake core-image-sato.
I can run it without the GUI:
runqemu nographic <- works
But I cannot run it with graphics
runqemu qemux86-64 <- fails, error:
runqemu ...
- 11
1
vote
1
answer
6k
views
How to enable 'devices' controller support in grub?
I am running ubuntu 22.04 with virt-manager installed, when I run virt-host-manager I get
QEMU: Checking for cgroup 'cpuset' controller support : PASS
QEMU: Checking for ...
- 111
2
votes
1
answer
6k
views
cloud-init does not work for Ubuntu 22.04 images
I'm testing cloud-init for Ubuntu 22.04 images,
So I first downloaded the cloud image from: https://cloud-images.ubuntu.com/releases/22.04/release/ubuntu-22.04-server-cloudimg-amd64.img
Then I create ...
- 54.8k
4
votes
1
answer
20k
views
qemu warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]
I'm tying to install Ubuntu 22.04(guest) on Ubuntu 20.04(host) with Intel® Core™ i3-1115G4.
I installed qemu, qemu-kvm, bridge-utils and added my user to kvm group. But the run command,
qemu-system-...
- 143
2
votes
0
answers
693
views
Can't boot arm64 cloud image with qemu
I first downloaded ubuntu-22.04-server-cloudimg-arm64.img, then I started it with qemu
qemu-system-aarch64 -m 2G -M virt -cpu max -bios /usr/share/qemu-efi-aarch64/QEMU_EFI.fd -drive if=none,file=...
- 54.8k