Here, with the maximized window, I typed several commands again: lsmod, clear, clear. If you look carefully, you can see the clear at the bottom, then at the top again, and nothing changes. All I can see are the characters I type, but not the command's output or effect. The screen doesn't clear, and the list of modules produced by "lsmod" doesn't appear.
** Attachment added: "maximized-clear-command-lsmod-command.png" https://bugs.launchpad.net/qemu/+bug/1819908/+attachment/5245847/+files/maximized-clear-command-lsmod-command.png -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1819908 Title: slight screen corruption when maximizing window Status in QEMU: New Bug description: Host: Ubuntu disco qemu-kvm: 1:3.1+dfsg-2ubuntu2 libvirt: 5.0.0-1ubuntu2 Guest: ubuntu bionic guest is using cirrus video, with the extra modules kernel package installed and the cirrus kernel module loaded. I also tried QXL, but got the same problem. A non-maximized terminal window works just fine. As an example, I run "lsmod". It fills the screen, which then scrolls a bit. The moment I maximize that window, though, the rendering breaks. I can see the commands I type, but not their output. See attached video. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1819908/+subscriptions