硬件: 笔记本，蓝天模具，i9-9900T + 1060
系统与图形: archlinux + gnome.wayland
系统有近半年没用，前天更新完后，USB键盘用不了，不过自带的PS/2键盘是能用的，重装系统后问题依旧
gnome-shell说它找不到
journalctl -b | grep 'Could not open device'
8月 15 05:31:28 EGLaptop gnome-shell[712]: Could not open device /dev/input/event9: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:31:28 EGLaptop gnome-shell[712]: Could not open device /dev/input/event10: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:31:28 EGLaptop gnome-shell[712]: Could not open device /dev/input/event11: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:31:45 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event9: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:31:45 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event10: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:31:45 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event11: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:35:10 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event11: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:35:10 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event10: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:35:10 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event9: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:37:39 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event10: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:37:39 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event9: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:37:39 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event11: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:41:38 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event10: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:41:38 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event9: GDBus.Error:System.Error.ENODEV: No such device
8月 15 05:41:38 EGLaptop gnome-shell[2632]: Could not open device /dev/input/event11: GDBus.Error:System.Error.ENODEV: No such device
其实是有的
sudo evtest
/dev/input/event10: GouDan Tech. SK108 Consumer Control
/dev/input/event11: GouDan Tech. SK108
/dev/input/event9: GouDan Tech. SK108 Mouse
用fuser看了下，没有添加
sudo fuser -v /dev/input/event*
/dev/input/event11: root 603 F.... systemd-logind（只有这行）
/dev/input/event4: root 1 F.... systemd （笔记本的PS/2键盘）
root 603 F.... systemd-logind
erickg 24166 F.... gnome-shell
尝试过添加ACL规则，也没用，那就不是规则的问题。重新插拔gnome-shell还是不认
Aug 15 04:25:13 systemd-logind: Watching system buttons on /dev/input/event11 (GouDan Tech. SK108)
Aug 15 04:25:13 gnome-shell: Could not open device /dev/input/event11: GDBus.Error:System.Error.ENODE
也尝试过降级到半年前的gnome和systemd，结果不认，不知道哪里出问题。
临时解决方式: 使用keyd拿这个键盘外设
先安装lsusb，用来看键盘外设
sudo pacman -S usbutils
~/ >> lsusb
printout:
Bus 001 Device 009: ID 31d6:002a GouDan Tech. SK108 (the keyboard you need to add)
然后安装evtest来看USB键盘
sudo pacman -S evtest
我这边是3个，对着刚才lsusb出的设备名来，比如说你event10，那就在evtest出来的提示那里输入10然后回车，然后就按按键看看是否响应就行了
~/ >> sudo evtest
/dev/input/event10: GouDan Tech. SK108 Consumer Control (快捷键)
/dev/input/event11: GouDan Tech. SK108 (主键盘)
/dev/input/event9: GouDan Tech. SK108 Mouse (我也不知道什么时候多了个鼠标)
安装keyd
sudo pacman -S keyd
然后用keyd monitor找刚才记录下来的设备号，它除了设备的vendor和product，额外添加了哈希值用来辨别同一个外设的不同特征
sudo keyd monitor
device added: xxxx:xxxx:c911497d GouDan Tech. SK108 (/dev/input/event11) >> (按键)
device added: xxxx:xxxx:21146082 GouDan Tech. SK108 Consumer Control (/dev/input/event10) >> (快捷键)
device added: xxxx:xxxx:6670e8fa GouDan Tech. SK108 Mouse (/dev/input/event9)
在/etc/keyd/目录下创建default.conf，我这里用的gnome-text-editor
sudo gnome-text-editor /etc/keyd/default.conf
配置文件格式大概是这样
[ids]
xxxx:xxxx:c911497d
xxxx:xxxx:21146082[main]
保存后关闭文件就有了，然后通过systemctl来启用keyd
sudo systemctl enable --now keyd
后续如果需要修改default.conf，修改好后执行reload即可
sudo keyd reload
