Using Virt-Manager on Debian
Virt-Manager is an awesome front end for running QEMU VMs on top of KVM. This is a great alternative to VirutalBox and since the latest version of Virtualbox has been moved to the “contrib” section in Debian (due to a non-free compiler that is required to builds the BIOS) it is one of the only 100% free software GUIs for managing virtual machines. To get virt-manager working debian you will need the following:
apt-get install qemu-kvm libvirt-bin virt-manager
Could not access KVM kernel module: Permission denied failed to initialize KVM: Permission denied
user:group is defined in /etc/libvirtr/qemu.conf 1 by default this is nobody so this is why the error message occurs. In order to fix this, edit this file and add your username and group to this file. The file should end up looking something like this:# The user for QEMU processes run by the system instance. It can be 215 # specified as a user name or as a user id. The qemu driver will try to 216 # parse this value first as a name and then, if the name doesn't exist, 217 # as a user id. 218 # 219 # Since a sequence of digits is a valid user name, a leading plus sign 220 # can be used to ensure that a user id will not be interpreted as a user 221 # name. 222 # 223 # Some examples of valid values are: 224 # 225 # user = "qemu" # A user named "qemu" 226 # user = "+0" # Super user (uid=0) 227 # user = "100" # A user named "100" or a user with uid=100 228 # 229 #user = "root" 230 user = "username" 231 # The group for QEMU processes run by the system instance. It can be 232 # specified in a similar way to user. 233 #group = "root" 234 group = "groupname"
systemctl restart libvirtd.service
Thank you for reading! Share your thoughts with me on bluesky, mastodon, or via email.
Check out some more stuff to read down below.
Most popular posts this month
- SQLite DB Migrations with PRAGMA user_version
- Lev Lazinskiy
- Edge Detection with Inkscape
- Org Mode To Google Docs and Beyond
- Spring Security, Webjars, and MIME type error
Recent Favorite Blog Posts
This is a collection of the last 8 posts that I bookmarked.
- Deeper dive: Were Touch Bar’s problems software rather than hardware? from Unsung
- Joining Cursor from Fatih Arslan
- Pluralistic: Digital sewer socialism (08 Aug 2026) from Pluralistic: Daily links from Cory Doctorow
- Pluralistic: Enshittification and Reverse Centaurs go global (29 Jul 2026) from Pluralistic: Daily links from Cory Doctorow
- AI Mania Is Eviscerating Global Decision-Making from Ludicity
- The default person from https://popagandhi.com/
- No-One Escapes the Permanent Underclass from Fernando Borretti
- Is it ethical to use AI? from charity.wtf
Articles from blogs I follow around the net
Have You Heard the Good News About Microlighter?
Dave Rupert wrote about shipping microlighter: a tool for handling syntax highlighting using the CSS Custom Highlights API. I saw his post the day he released it, and I had an implementation PR up for my blog by end of day. Then, like I do with so many thi...
via Jim Nielsen’s Blog August 25, 2026Two previews for the price of one
A thoughtful moment in the Arrange Displays pop-up in macOS’s Settings when you choose to designate a screen to be a primary screen: It not only shows a nice preview of where your menu is going to land, but also changes the shape of the menu proxy you’re h...
via Unsung August 25, 2026Pluralistic: How Canada can help Americans and defeat America (23 Aug 2026)
Today's links How Canada can save Americans and defeat America: True Carneyism has never been tried. Hey look at this: Delights to delectate. Object permanence: Brazil v AIDS drug patents; TSA v gel-bras; After the Siege (Russian); Names are hard; Layton's...
via Pluralistic: Daily links from Cory Doctorow August 24, 2026Generated by openring