kmsdrm: VT switching doesn't work

[stsp]

It seems VT switching was
implemented per #8509
It doesn't work here though.

Steps to reproduce:

• Ctrl-Alt-f5 to console
• cd <sdl_build_dir>/test
• ./testdraw
• Press Ctrl-Alt-f3 or Alt-f3 or whatever

Result:

• nothing happens

Expected result:

• VT switch

[slouken]

What platform are you running on?

[stsp]

Ubuntu 25.04/x86_64

[slouken]

Ironically if you don't have access to the keyboard, console switching works. Something about how we initialize the keyboard disables console switching.

[slouken]

Also, using sudo runs the application under a psuedo-tty, so it doesn't have access to the console.

[stsp]

I already filled sudo-project/sudo#447
and I think sudo will add
SUDO_TTY var in the future.
Then you can at least re-open
the console.
Maybe sdl can add some fn
for the user to pass the console
fd to it.

[stsp]

SUDO_TTY is now implemented.
Do you think an app should open
the tty and pass an fd to sdl
somehow?