我在 dom0 中使用 Debian Bullseye 的 XEN 4.14.5，我的 domU 是 Devuan Chimaera（Debian Bullseye 的一个分支）。
我连接到 domU 的 VNC 服务器，在启动 X11 之前一切正常。 （自从安装了软件包后kbd，我什至可以说鼠标在 X11 之外也能工作。）但是在 X11 中，鼠标可以工作，而键盘无法使用。
一诡异的线索：我跑了xev，发现输入数字1、2、3导致了ButtonPress和ButtonRelease事件！
编辑：重新测试似乎表明是escape、1、 和2；这将是前三个键码。
有什么建议么？
xinput 报告：
# env DISPLAY=:0 xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Xen Virtual Keyboard id=7 [slave pointer (2)]
⎜ ↳ Xen Virtual Pointer id=8 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Xen Virtual Keyboard (keys) id=6 [slave keyboard (3)]
#
从 Xorg.0.log 中提取：
[ 11.990] (II) config/udev: Adding input device PC Speaker (/dev/input/event0)
[ 11.990] (II) No input driver specified, ignoring this device.
[ 11.990] (II) This device may have been added with another device file.
[ 11.991] (II) config/udev: Adding input device Xen Virtual Keyboard (/dev/input/event1)
[ 11.991] (**) Xen Virtual Keyboard: Applying InputClass "evdev keyboard catchall"
[ 11.991] (**) Xen Virtual Keyboard: Applying InputClass "libinput keyboard catchall"
[ 11.991] (**) Xen Virtual Keyboard: Applying InputClass "joystick catchall"
[ 11.991] (II) LoadModule: "joystick"
[ 11.991] (II) Loading /usr/lib/xorg/modules/input/joystick_drv.so
[ 11.994] (II) Module joystick: vendor="X.Org Foundation"
[ 11.994] compiled for 1.19.0, module version = 1.6.3
[ 11.994] Module class: X.Org XInput Driver
[ 11.994] ABI class: X.Org XInput driver, version 24.1
[ 11.994] (II) Using input driver 'joystick' for 'Xen Virtual Keyboard'
[ 11.994] (**) Xen Virtual Keyboard: always reports core events
[ 11.994] (**) Xen Virtual Keyboard (keys): Applying InputClass "evdev keyboard catchall"
[ 11.994] (**) Xen Virtual Keyboard (keys): Applying InputClass "libinput keyboard catchall"
[ 11.994] (**) Xen Virtual Keyboard (keys): Applying InputClass "joystick catchall"
[ 11.994] (II) Using input driver 'joystick' for 'Xen Virtual Keyboard (keys)'
[ 11.994] (**) Xen Virtual Keyboard (keys): always reports core events
[ 11.994] (**) Option "xkb_model" "pc105"
[ 11.994] (**) Option "xkb_layout" "us"
[ 11.994] (**) Option "config_info" "udev:/sys/devices/virtual/input/input1/event1"
[ 11.994] (II) XINPUT: Adding extended input device "Xen Virtual Keyboard (keys)" (type: JOYSTICK, id 6)
[ 11.995] (**) Option "Device" "/dev/input/event1"
[ 11.995] (**) Option "config_info" "udev:/sys/devices/virtual/input/input1/event1"
[ 11.995] (II) XINPUT: Adding extended input device "Xen Virtual Keyboard" (type: JOYSTICK, id 7)
[ 11.995] (II) Joystick: Xen Virtual Keyboard. bus 0x1 vendor 0x5853 product 0xffff version 0x0
[ 11.995] (II) Joystick: found 0 axes, 654 buttons
[ 11.995] JOYSTICK: DebugLevel set to 0
[ 11.995] (**) Xen Virtual Keyboard: (accel) keeping acceleration scheme 1
[ 11.995] (**) Xen Virtual Keyboard: (accel) acceleration profile 0
[ 11.995] (**) Xen Virtual Keyboard: (accel) acceleration factor: 2.000
[ 11.995] (**) Xen Virtual Keyboard: (accel) acceleration threshold: 4
[ 11.996] (II) config/udev: Adding input device Xen Virtual Keyboard (/dev/input/js0)
[ 11.996] (II) No input driver specified, ignoring this device.
[ 11.996] (II) This device may have been added with another device file.
[ 11.996] (II) config/udev: Adding input device Xen Virtual Pointer (/dev/input/event2)
[ 11.996] (**) Xen Virtual Pointer: Applying InputClass "evdev pointer catchall"
[ 11.996] (**) Xen Virtual Pointer: Applying InputClass "Xen Virtual Pointer axis blacklist"
[ 11.996] (**) Xen Virtual Pointer: Applying InputClass "libinput pointer catchall"
[ 11.996] (II) LoadModule: "libinput"
[ 11.996] (II) Loading /usr/lib/xorg/modules/input/libinput_drv.so
[ 12.020] (II) Module libinput: vendor="X.Org Foundation"
[ 12.020] compiled for 1.20.8, module version = 0.30.0
[ 12.020] Module class: X.Org XInput Driver
[ 12.020] ABI class: X.Org XInput driver, version 24.1
[ 12.020] (II) Using input driver 'libinput' for 'Xen Virtual Pointer'
[ 12.021] (**) Xen Virtual Pointer: always reports core events
[ 12.021] (**) Option "Device" "/dev/input/event2"
[ 12.021] (**) Option "_source" "server/udev"
[ 12.038] (II) event2 - Xen Virtual Pointer: is tagged by udev as: Mouse
[ 12.038] (II) event2 - Xen Virtual Pointer: device is a pointer
[ 12.039] (II) event2 - Xen Virtual Pointer: device removed
[ 12.039] (**) Option "config_info" "udev:/sys/devices/virtual/input/input2/event2"
[ 12.039] (II) XINPUT: Adding extended input device "Xen Virtual Pointer" (type: MOUSE, id 8)
[ 12.039] (**) Option "AccelerationScheme" "none"
[ 12.039] (**) Xen Virtual Pointer: (accel) selected scheme none/0
[ 12.039] (**) Xen Virtual Pointer: (accel) acceleration factor: 2.000
[ 12.039] (**) Xen Virtual Pointer: (accel) acceleration threshold: 4
[ 12.040] (II) event2 - Xen Virtual Pointer: is tagged by udev as: Mouse
[ 12.040] (II) event2 - Xen Virtual Pointer: device is a pointer
[ 12.040] (II) config/udev: Adding input device Xen Virtual Pointer (/dev/input/js1)
[ 12.041] (**) Xen Virtual Pointer: Applying InputClass "Xen Virtual Pointer axis blacklist"
[ 12.041] (II) No input driver specified, ignoring this device.
[ 12.041] (II) This device may have been added with another device file.
[ 12.041] (II) config/udev: Adding input device Xen Virtual Pointer (/dev/input/mouse0)
[ 12.041] (**) Xen Virtual Pointer: Applying InputClass "Xen Virtual Pointer axis blacklist"
[ 12.041] (II) No input driver specified, ignoring this device.
[ 12.041] (II) This device may have been added with another device file.
```
答案1
基于https://forums.gentoo.org/viewtopic-p-8683632.html#8683632
我发现放置一个/etc/X11/xorg.conf.d/*.conf包含以下内容的文件匹配就足够了：
Section "InputClass"
Identifier "libinput keyboard catchall"
MatchIsKeyboard "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
虽然这是 中某个部分的精确匹配（不包括空格）/usr/share/X11/xorg.conf.d/40-libinput.conf，但显然顺序一定很重要。