如何获取我所有的密钥以发送密钥代码

14

我在XFCE上使用Gentoo。我有一个Logitech K350键盘，除少数几个键外，其他所有键均按预期工作，但是我想使用一个特定的键，但是在运行时showkey没有发送任何键代码。按键是键盘左下方的“排列窗口”按钮。

在此处输入图片说明。

这是驱动程序问题，是否可以获取该密钥以发送代码，以便我可以对其进行映射？

linux  x11  keyboard  keyboard-layout 
— 安德鲁·雷德（Andrew Redd）
source
在运行xev时，按键是否会产生任何输出？还要看看我以前使用的答案xev。他们应该帮助您入门：unix.stackexchange.com/search?q=user%3A7453+xev
— slm
@slm没有来自xev的与按键相关联的输出。
— 2014年
这篇文章可能会有所帮助：unix.stackexchange.com/questions/116629/...
— SLM
我试图按照此处的指南julien.danjou.info/blog/2012/logitech-k750-linux-support来查找正在发送的信号。我认为某些键必须不通过按键代码传递，而必须通过hid-logitech-dj驱动程序无法处理的其他类型的USB信号传递。
— 2014年
使用USB键盘，您可以使用命令xinput从中获取其他信息。
— slm

Answers:

10

不要使用showkey或xev-使用udev和evtest代替。

看一下输出 evtest

# evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:      Logitech Logitech USB Keyboard
/dev/input/event1:      Logitech Logitech USB Keyboard
/dev/input/event2:      Power Button
/dev/input/event3:      Power Button
/dev/input/event4:      PC Speaker
/dev/input/event5:      A4Tech USB Mouse
/dev/input/event6:      ACPI Virtual Keyboard Device
Select the device event number [0-6]: 0
Input driver version is 1.0.1
Input device ID: bus 0x3 vendor 0x46d product 0xc30f version 0x110
Input device name: "Logitech Logitech USB Keyboard"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 1 (KEY_ESC)
    Event code 2 (KEY_1)
    Event code 3 (KEY_2)
    Event code 4 (KEY_3)
    Event code 5 (KEY_4)
    Event code 6 (KEY_5)
    Event code 7 (KEY_6)
    Event code 8 (KEY_7)
    Event code 9 (KEY_8)
    Event code 10 (KEY_9)
    Event code 11 (KEY_0)
    Event code 12 (KEY_MINUS)
    Event code 13 (KEY_EQUAL)
    Event code 14 (KEY_BACKSPACE)
    Event code 15 (KEY_TAB)
    Event code 16 (KEY_Q)
    Event code 17 (KEY_W)
    Event code 18 (KEY_E)
    Event code 19 (KEY_R)
    Event code 20 (KEY_T)
    Event code 21 (KEY_Y)
    Event code 22 (KEY_U)
    Event code 23 (KEY_I)
    Event code 24 (KEY_O)
    Event code 25 (KEY_P)
    Event code 26 (KEY_LEFTBRACE)
    Event code 27 (KEY_RIGHTBRACE)
    Event code 28 (KEY_ENTER)
    Event code 29 (KEY_LEFTCTRL)
    Event code 30 (KEY_A)
    Event code 31 (KEY_S)
    Event code 32 (KEY_D)
    Event code 33 (KEY_F)
    Event code 34 (KEY_G)
    Event code 35 (KEY_H)
    Event code 36 (KEY_J)
    Event code 37 (KEY_K)
    Event code 38 (KEY_L)
    Event code 39 (KEY_SEMICOLON)
    Event code 40 (KEY_APOSTROPHE)
    Event code 41 (KEY_GRAVE)
    Event code 42 (KEY_LEFTSHIFT)
    Event code 43 (KEY_BACKSLASH)
    Event code 44 (KEY_Z)
    Event code 45 (KEY_X)
    Event code 46 (KEY_C)
    Event code 47 (KEY_V)
    Event code 48 (KEY_B)
    Event code 49 (KEY_N)
    Event code 50 (KEY_M)
    Event code 51 (KEY_COMMA)
    Event code 52 (KEY_DOT)
    Event code 53 (KEY_SLASH)
    Event code 54 (KEY_RIGHTSHIFT)
    Event code 55 (KEY_KPASTERISK)
    Event code 56 (KEY_LEFTALT)
    Event code 57 (KEY_SPACE)
    Event code 58 (KEY_CAPSLOCK)
    Event code 59 (KEY_F1)
    Event code 60 (KEY_F2)
    Event code 61 (KEY_F3)
    Event code 62 (KEY_F4)
    Event code 63 (KEY_F5)
    Event code 64 (KEY_F6)
    Event code 65 (KEY_F7)
    Event code 66 (KEY_F8)
    Event code 67 (KEY_F9)
    Event code 68 (KEY_F10)
    Event code 69 (KEY_NUMLOCK)
    Event code 70 (KEY_SCROLLLOCK)
    Event code 71 (KEY_KP7)
    Event code 72 (KEY_KP8)
    Event code 73 (KEY_KP9)
    Event code 74 (KEY_KPMINUS)
    Event code 75 (KEY_KP4)
    Event code 76 (KEY_KP5)
    Event code 77 (KEY_KP6)
    Event code 78 (KEY_KPPLUS)
    Event code 79 (KEY_KP1)
    Event code 80 (KEY_KP2)
    Event code 81 (KEY_KP3)
    Event code 82 (KEY_KP0)
    Event code 83 (KEY_KPDOT)
    Event code 85 (KEY_ZENKAKUHANKAKU)
    Event code 86 (KEY_102ND)
    Event code 87 (KEY_F11)
    Event code 88 (KEY_F12)
    Event code 89 (KEY_RO)
    Event code 90 (KEY_KATAKANA)
    Event code 91 (KEY_HIRAGANA)
    Event code 92 (KEY_HENKAN)
    Event code 93 (KEY_KATAKANAHIRAGANA)
    Event code 94 (KEY_MUHENKAN)
    Event code 95 (KEY_KPJPCOMMA)
    Event code 96 (KEY_KPENTER)
    Event code 97 (KEY_RIGHTCTRL)
    Event code 98 (KEY_KPSLASH)
    Event code 99 (KEY_SYSRQ)
    Event code 100 (KEY_RIGHTALT)
    Event code 102 (KEY_HOME)
    Event code 103 (KEY_UP)
    Event code 104 (KEY_PAGEUP)
    Event code 105 (KEY_LEFT)
    Event code 106 (KEY_RIGHT)
    Event code 107 (KEY_END)
    Event code 108 (KEY_DOWN)
    Event code 109 (KEY_PAGEDOWN)
    Event code 110 (KEY_INSERT)
    Event code 111 (KEY_DELETE)
    Event code 113 (KEY_MUTE)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 116 (KEY_POWER)
    Event code 117 (KEY_KPEQUAL)
    Event code 119 (KEY_PAUSE)
    Event code 121 (KEY_KPCOMMA)
    Event code 122 (KEY_HANGUEL)
    Event code 123 (KEY_HANJA)
    Event code 124 (KEY_YEN)
    Event code 125 (KEY_LEFTMETA)
    Event code 126 (KEY_RIGHTMETA)
    Event code 127 (KEY_COMPOSE)
    Event code 128 (KEY_STOP)
    Event code 129 (KEY_AGAIN)
    Event code 130 (KEY_PROPS)
    Event code 131 (KEY_UNDO)
    Event code 132 (KEY_FRONT)
    Event code 133 (KEY_COPY)
    Event code 134 (KEY_OPEN)
    Event code 135 (KEY_PASTE)
    Event code 136 (KEY_FIND)
    Event code 137 (KEY_CUT)
    Event code 138 (KEY_HELP)
    Event code 183 (KEY_F13)
    Event code 184 (KEY_F14)
    Event code 185 (KEY_F15)
    Event code 186 (KEY_F16)
    Event code 187 (KEY_F17)
    Event code 188 (KEY_F18)
    Event code 189 (KEY_F19)
    Event code 190 (KEY_F20)
    Event code 191 (KEY_F21)
    Event code 192 (KEY_F22)
    Event code 193 (KEY_F23)
    Event code 194 (KEY_F24)
    Event code 240 (KEY_UNKNOWN)
  Event type 4 (EV_MSC)
    Event code 4 (MSC_SCAN)
  Event type 17 (EV_LED)
    Event code 0 (LED_NUML)
    Event code 1 (LED_CAPSL)
    Event code 2 (LED_SCROLLL)
    Event code 3 (LED_COMPOSE)
    Event code 4 (LED_KANA)
Properties:
  Property type 20 (EV_REP)
    Property code 0 (REP_DELAY)
      Value    250
    Property code 1 (REP_PERIOD)
      Value     33
Testing ... (interrupt to exit)

和第二个设备（相同的键盘，但具有多媒体键）：

# evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:      Logitech Logitech USB Keyboard
/dev/input/event1:      Logitech Logitech USB Keyboard
/dev/input/event2:      Power Button
/dev/input/event3:      Power Button
/dev/input/event4:      PC Speaker
/dev/input/event5:      A4Tech USB Mouse
/dev/input/event6:      ACPI Virtual Keyboard Device
Select the device event number [0-6]: 1
Input driver version is 1.0.1
Input device ID: bus 0x3 vendor 0x46d product 0xc30f version 0x110
Input device name: "Logitech Logitech USB Keyboard"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 113 (KEY_MUTE)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 116 (KEY_POWER)
    Event code 131 (KEY_UNDO)
    Event code 138 (KEY_HELP)
    Event code 140 (KEY_CALC)
    Event code 142 (KEY_SLEEP)
    Event code 143 (KEY_WAKEUP)
    Event code 155 (KEY_MAIL)
    Event code 156 (KEY_BOOKMARKS)
    Event code 158 (KEY_BACK)
    Event code 159 (KEY_FORWARD)
    Event code 163 (KEY_NEXTSONG)
    Event code 164 (KEY_PLAYPAUSE)
    Event code 165 (KEY_PREVIOUSSONG)
    Event code 166 (KEY_STOPCD)
    Event code 168 (KEY_REWIND)
    Event code 171 (KEY_CONFIG)
    Event code 172 (KEY_HOMEPAGE)
    Event code 182 (KEY_REDO)
    Event code 208 (KEY_FASTFORWARD)
    Event code 210 (KEY_PRINT)
    Event code 217 (KEY_SEARCH)
    Event code 234 (KEY_SAVE)
    Event code 319 (?)
    Event code 328 (BTN_TOOL_QUINTTAP)
    Event code 329 (?)
    Event code 330 (BTN_TOUCH)
    Event code 331 (BTN_STYLUS)
    Event code 418 (KEY_ZOOMIN)
    Event code 419 (KEY_ZOOMOUT)
    Event code 420 (KEY_ZOOMRESET)
    Event code 421 (KEY_WORDPROCESSOR)
    Event code 423 (KEY_SPREADSHEET)
    Event code 425 (KEY_PRESENTATION)
    Event code 430 (KEY_MESSENGER)
  Event type 4 (EV_MSC)
    Event code 4 (MSC_SCAN)
Properties:
Testing ... (interrupt to exit)

代码> 255的所有事件将不起作用，您必须重新映射键。但是首先，您必须获得一些扫描代码：

# /lib/udev/keymap -i input/event1
Press ESC to finish, or Control-C if this device is not your primary keyboard
scan code: 0xC022D   key code: zoomin
scan code: 0xC022E   key code: zoomout

然后按一下无效的键。如果您在这里找不到任何扫描代码，则该密钥可能已失效，您将无能为力。

现在，您必须检查哪些键码是免费的-您可以根据/usr/include/linux/input.h文件进行拍摄，例如：

#define KEY_PROG3        202
#define KEY_PROG4       203

或者您可以按键盘上的每个键并手动映射它们。

无论如何，如果您知道哪些键码是免费的，则可以创建一个与此内容相似的文件：

0xC022D PROG3
0xC022E PROG4

您可以将其保存在/lib/udev/keymaps/logitech-media-keyboard-elite-这是我的键盘。

现在，您必须为创建一条规则udev，它应如下所示：

KERNEL=="event*", ACTION=="add", SUBSYSTEM=="input", SUBSYSTEMS=="usb", ENV{ID_VENDOR_ID}=="046d", ENV{ID_MODEL_ID}=="c30f", RUN+="/lib/udev/keymap $name /lib/udev/keymaps/logitech-media-keyboard-elite"

ENV{ID_VENDOR_ID}，ENV{ID_MODEL_ID}以及其他参数，你可以从阅读：

# udevadm info /dev/input/event0

要么：

# udevadm info --name /dev/input/event0 --attribute-walk

将以下规则保存/etc/udev/rules.d/95-keymap-media-keyboard-elite.rules下来，然后重新插入键盘。它对我很好，也应该对你有用。

— 米哈伊尔·莫尔菲科夫（Mikhail Morfikov）
source
evtest不会捕获我关注的键的事件。有些东西正在丢失。Wireshark看到了这些事件，但是似乎没有其他东西可以看到它们，我认为这一定是驱动程序问题。据我所知，hid-logitech-dj驱动程序捕获了输出并将其转发到hid-core。某个地方迷路了。
— 2014年
也许您使用了错误的设备？
— 米哈伊尔·莫尔菲科夫
由于/lib/udev/keymap显然已被删除，因此现在看来已过时。askubuntu.com/questions/362373/…–
— Karthik T
1
是的，我在这里描述的想法已经过时了。相反，udev使用您放入的文件/etc/udev/hwdb.d/。
— Mikhail Morfikov 2015年
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