Re: qemu-system-x86_64: warning: Unknown X11 keycode mapping '<null>'.

[Daniel P . Berrangé]

On Mon, Mar 02, 2020 at 12:04:46AM +0100, Thorsten Glaser wrote:
> I got this while running qemu under VNC, and was told to report it.
> 
> including the following information:
> 
>   - Operating system
>       Debian GNU/Linux sid/x32
>   - X11 Server
>       x11vnc  0.9.16-3

Can you tell me a bit more detail about how you launch this all.

"x11vnc" suggests you had a regular X11 desktop session, and are
exporting it via VNC ?

But later...

>   - xdpyinfo
>       name of display:    :2
>       version number:    11.0
>       vendor string:    AT&T Laboratories Cambridge

...this suggests your running a VNC server, with embedded X11 server


>   - xprop -root

...there's no _XKB_RULES_NAMES(STRING) property listed, which is the key
thing we'd expect to see for a modern X server. eg

  _XKB_RULES_NAMES(STRING) = "evdev", "pc105", "us", "", ""

is what most X servers on Linux will report.

Can you also say what QEMU version ?

QEMU since 2.12.0 or later has a second way to detect the keymap, by
querying the scancode mapping for certain keys.

So either your QEMU is fairly old, or you are using a keycode mapping
that QEMU has no understanding of (we support evdev, or the classic
xfree86 'kbd' mapping). It would be highly unusual not to use one of
those two, but none the less, that appears to be the case here ?


Regards,
Daniel
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