Hi! I am trying to run my sdl1-based app under linux kms framebuffer (amdgpudrmfb in my case). The app itself works perfectly, but console switching is not. If I switch the console while the app is drawing, then it will corrupt the VC I switched to. It will just draw on top of the VC's content. Question: is this expected? Is drm framebuffer global, rather than per-vc? If so, should I somehow freeze my app when it is switched away? And why would it be the case, with the modern video cards that have multi gigas of RAM on board? If my app crashes without a clean shutdown, then the framebuffer kinda hangs. I can switch to other VCs but I don't see their content. All I see is the last drawing of my app. If I happen to have an X server on some other VC, then switching to it immediately unhangs everything, and I can switch back. In fact, even if I hit Ctrl-Alt-Del, then fb immediately unhangs (by systemd or plymouth or whoever else). But for example SAK combo doesn't unhang. So it seems to be very simple to hang the framebuffer, and is quite difficult to recover. Question: is this an expected behaviour or a drmfb bug? Thanks!
