主键盘的回车(36)触发的是小键盘的回车(104) 键码有误

[puzzle9]

演示

• /usr/bin/xev
• 键盘按键测试 https://keyboard.bmcx.com/

笔记本

主键盘区

KeyPress event, serial 45, synthetic NO, window 0x3600001,
    root 0x845, subw 0x0, time 703078, (106,99), root:(156,209),
    state 0x10, keycode 104 (keysym 0xff8d, KP_Enter), same_screen YES,
"   XLookupString gives 1 bytes: (0d) "
"   XmbLookupString gives 1 bytes: (0d) "
    XFilterEvent returns: False

外接键盘

主键盘区

KeyPress event, serial 47, synthetic NO, window 0x3600001,
    root 0x845, subw 0x0, time 746296, (596,1023), root:(646,1133),
    state 0x10, keycode 36 (keysym 0xff0d, Return), same_screen YES,
"   XLookupString gives 1 bytes: (0d) "
"   XmbLookupString gives 1 bytes: (0d) "
    XFilterEvent returns: False

小键盘区

KeyPress event, serial 47, synthetic NO, window 0x3600001,
    root 0x845, subw 0x0, time 769660, (408,407), root:(458,517),
    state 0x10, keycode 104 (keysym 0xff8d, KP_Enter), same_screen YES,
"   XLookupString gives 1 bytes: (0d) "
"   XmbLookupString gives 1 bytes: (0d) "
    XFilterEvent returns: False

影响软件

• fcitx 在中文并且候选框有字的时候 按回车会触发搜索

[vrolife]

证实确实有这个问题。经分析，这是由于ENTER键从主板传过来的扫描码是0x9C，这个扫描码默认映射KP_Enter键，小米工程师太不讲究了。至于受影响的软件，我这kubuntu+fcitx5没有受到影响。

想变更这个默认行为的话，可以解压文件90-kpenter2enter-keyboard.hwdb.zip到/etc/udev/hwdb.d/90-kpenter2enter-keyboard.hwdb来将kpenter键映射为enter键盘。放置文件后运行systemd-hwdb update更新hwdb. 接着重启或者运行命令udevadm trigger /dev/input/event2使其生效

如果你的机型不是RedmiBookPro152022，运行以下命令查看具体型号。型号不对则文件不生效
evemu-describe /dev/input/event2 |grep DMI # /dev/input/event2 应当为AT Translated Set 2 keyboard
参考https://wiki.archlinux.org/title/map_scancodes_to_keycod

[puzzle9]

我刚才试了下 在win11中 也是这情况