[Regression] [Kernel >= 5.7] Switch between virtual consoles broken when framebuffer is used
Since kernel >= 5.7 the framebuffer image doesn't update when I switch between virtual consoles - when the framebuffer is actively used by an application. The virtual console is switched anyway and keyboard signals are send, but the display doesn't update.
Step to reproduce:
- Use a virtual console (no X11 and no Wayland)
- Launch an application which uses the framebuffer e.g. fbi, mpv or mplayer
$ fbi some_image.png
- Image is displayed
- Switch to another virtual console
- Display doesn't update but virtual console is switched, entered commands are executed
Display updates and shows the selected virtual console. I'm using fbi to display the images, but I assume it also affects mpv or mplayer.
PS: I've also reported at bugzilla.kernel.org but I think that the kernel bugzill is the wrong place?