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fix virtual machine missing 3440x1440 resolution

How to add missing 3440 x 1440 resolution to QEMU virtual machine

UPDATE! Since I have written this article, I have learned that installing openSUSE Tumbleweed and Fedora 37 Beta do not have issues with screen resolution.

This article documents how I add the missing 3440×1440 resolution to virtual machines. I love using ultrawide monitors on Linux. For some reason, QEMU KVM Virtual Machine Manager does not include ultrawide 21:9 resolution by default. Here is how I added it.

IMPORTANT
I have executed the following command from within the virtual machine. PLEASE understand that copy/pasting commands from the internet is risky unless you understand what you are doing.
Again, I issued the following command in the Gnome terminal from within the virtual machine running Fedora Workstation 36.
sudo grubby –update-kernel=ALL –args=”video=hyperv_fb:3440×1440″

Then I rebooted the virtual machine. After I logged in, I clicked the little cross symbol on the top right corner to switch to fullscreen view. After that, I opened the Display Settings and selected 3440 x 1440 (21:9) from the drop-down list. Lastly, I applied the new setting to make the change permanent.

Note that the ultrawide resultion will automatically take over as soon as you switch to fullscreen view.

fix virtual machine missing 3440x1440 resolution
Add the missing 3440×1440 ultrawide resolution to virtual machine

Bonus tip: How to exit fullscreen view.
Hover your mouse cursor over the top center edge of the screen. This will reveal two icons. Clicking the left one will exit fullscreen view and revert to a resolution which matches the window size.

Final thoughts

Fedora has two kinds of audiences. Those who use it happily and those who complain and give Fedora a bad review. PLEASE ignore those who criticize Fedora but don’t show or mention what they create. Instead, find our for yourself if Fedora is for you. Earlier today, I installed several virtual machines and two servers. All of them instantly communicated with each other and there were no tedious configurations necessary to make this happen.

Gnome offers tons of powerful options. My favorite one is the ease of turning off internet access while keeping the local network connections active. We all use virtual machines for different purposes abut in my case, not all of them need internet access. In less than an hour, I was able to set up a small virtual network which will perform all the tasks that I don’t want to run on the main installation.

Backing up Linux is complex. Software like Timeshift used to make this task easy but the snapshots fill up quickly and lately there are other issues. On the other hand, a virtual machine is perfect. Virtual machines can be set up in just minutes and snapshots are the icing on the cake. They are a true time saver.

Although there are several options to run a virtual machine, the one by far is using QEMU KVM on Fedora. Installation is also simple. There are many reasons to prefer Fedora and one (reason), which gets rarely mentioned, is the excellent documentation. If you are new to virtual machines then I recommend that you read up on the getting started guide which is from the Fedora Docs website.

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