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Element-126
Asked: 2018-07-26 15:26:05 +0800 CST

如何完全抑制盖子开关事件？

  • 772

语境：

由于我的 2 合 1 敞篷车缺少驱动程序，将屏幕向后折叠只会触发盖子开关事件。这会导致笔记本电脑挂起，或者当在 Gnome 中禁用“关闭笔记本电脑盖时挂起”时，仍然会导致所有输入设备被禁用（包括触摸屏，这会使平板电脑模式无用）。

作为一种解决方法，我想手动处理切换到平板电脑模式。这需要禁止所有盖子开关事件。

问题：

如何在 Linux 中完全禁止盖子开关事件？

或者，找到一种方法来列出/禁用响应盖子开关的进程将解决该问题。

目前，在平板模式下折叠屏幕并返回会记录以下事件：

Jul 25 23:58:54 jl-xps systemd-logind[816]: Lid closed.
Jul 25 23:58:58 jl-xps systemd-logind[816]: Lid opened.

盖子开关事件映射到/dev/input/event0. /proc/bus/input/devices列表（截断）：

I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0 
B: PROP=0
B: EV=21
B: SW=1

尝试：

方法1：，systemd-inhibit取自关闭笔记本电脑盖时如何禁用自动挂起？

# systemd-inhibit --what=handle-lid-switch sleep 1m

然后在定时器结束前翻转屏幕。盖子开关事件仍然由 记录systemd-logind，我可以看到/dev/input/event0正在写入（并且其他输入设备仍然被禁用）。

方法 2：ACPI

$ echo "LID0" | sudo tee /proc/acpi/wakeup

并检查它是否确实被禁用：

LID0      S3    *disabled  platform:PNP0C0D:00

使用相同的systemd-logind日志并且/dev/input/event0仍然被写入。

方法3：蛮力

# mv /dev/input/event0 /dev/input/event0-off
# ln -s /dev/null /dev/input/event0

盖子开关事件仍由 记录systemd-logind。因此，这似乎/dev/input/event0只是提供信息。

系统信息：

$ inxi -Fxmz

System:    Host: jl-xps Kernel: 4.18.0-0.rc5.git4.1.fc29.x86_64 x86_64 bits: 64 compiler: gcc v: 8.1.1 
           Desktop: Gnome 3.28.3 Distro: Fedora release 28 (Twenty Eight) 
Machine:   Type: Laptop System: Dell product: XPS 15 9575 v: N/A serial: <filter> 
           Mobo: Dell model: 0C32VW v: A00 serial: <filter> UEFI: Dell v: 1.1.5 date: 05/30/2018 
Battery:   ID-1: BAT0 charge: 72.3 Wh condition: 72.3/75.0 Wh (96%) model: BYD DELL TMFYT84 status: Full 
Memory:    RAM Report: permissions: Unable to run dmidecode. Are you root? 
CPU:       Topology: Quad Core model: Intel Core i7-8705G bits: 64 type: MT MCP arch: Skylake rev: 9 
           L2 cache: 8192 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 49536 
           Speed: 900 MHz min/max: 800/4100 MHz Core speeds (MHz): 1: 900 2: 900 3: 900 4: 900 5: 900 6: 900 
           7: 900 8: 900 
Graphics:  Card-1: Intel driver: i915 v: kernel bus ID: 00:02.0 
           Card-2: Advanced Micro Devices [AMD/ATI] Polaris 22 [Radeon RX Vega M GL] driver: amdgpu v: kernel 
           bus ID: 01:00.0 
           Display: wayland server: Fedora Project X.org 11.0 driver: amdgpu resolution: 3840x2160~60Hz 
           OpenGL: renderer: Mesa DRI Intel HD Graphics 630 (Kaby Lake GT2) v: 4.5 Mesa 18.1.4 
           direct render: Yes 
Audio:     Card-1: Intel CM238 HD Audio driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
           Card-2: N/A type: USB driver: snd-usb-audio bus ID: 3:2 
           Sound Server: ALSA v: k4.18.0-0.rc5.git4.1.fc29.x86_64 
Network:   Card-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter driver: ath10k_pci v: kernel 
           bus ID: 02:00.0 
           IF: wlp2s0 state: up mac: <filter> 
           Card-2: Intel I210 Gigabit Network Connection driver: igb v: 5.4.0-k port: 2000 bus ID: 40:00.0 
           IF: enp64s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
           Card-3: Realtek RTL8153 Gigabit Ethernet Adapter type: USB driver: r8152 bus ID: 10:3 
           IF: enp65s0u2u2 state: down mac: <filter> 
           IF-ID-1: tap0 state: unknown speed: 10 Mbps duplex: full mac: <filter> 
           IF-ID-2: virbr0 state: up speed: N/A duplex: N/A mac: <filter> 
           IF-ID-3: virbr0-nic state: down mac: <filter> 
Drives:    HDD Total Size: 232.89 GiB used: 77.91 GiB (33.5%) 
           ID-1: /dev/sda type: USB vendor: Samsung model: Portable SSD T3 size: 232.89 GiB 
RAID:      Hardware-1: Intel 82801 Mobile SATA Controller [RAID mode] driver: ahci v: 3.0 bus ID: 00:17.0 
Partition: ID-1: / size: 114.35 GiB used: 77.69 GiB (67.9%) fs: ext4 dev: /dev/sda3 
           ID-2: /boot size: 975.9 MiB used: 202.9 MiB (20.8%) fs: ext4 dev: /dev/sda2 
           ID-3: swap-1 size: 16.00 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda4 
Sensors:   System Temperatures: cpu: 50.0 C mobo: 37.0 C gpu: amdgpu temp: 49 C 
           Fan Speeds (RPM): cpu: 0 
Info:      Processes: 381 Uptime: 3h 01m Memory: 15.36 GiB used: 7.66 GiB (49.9%) Init: systemd runlevel: 5 
           Compilers: gcc: 8.1.1 Shell: fish v: 2.7.1 inxi: 3.0.14

 

$ xinput list

⎡ Virtual core pointer                      id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ xwayland-pointer:15                       id=6    [slave  pointer  (2)]
⎜   ↳ xwayland-relative-pointer:15              id=7    [slave  pointer  (2)]
⎜   ↳ xwayland-touch:15                         id=9    [slave  pointer  (2)]
⎜   ↳ xwayland-stylus:15                        id=10   [slave  pointer  (2)]
⎜   ↳ xwayland-eraser:15                        id=11   [slave  pointer  (2)]
⎜   ↳ xwayland-cursor:15                        id=12   [slave  pointer  (2)]
⎣ Virtual core keyboard                     id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ xwayland-keyboard:15                      id=8    [slave  keyboard (3)]

以下是sudo libinput debug-events更改为平板电脑模式并返回笔记本电脑模式时的输出（盖子开关设备已禁用）：

-event3   DEVICE_ADDED     Power Button                      seat0 default group1  cap:k
-event5   DEVICE_ADDED     Video Bus                         seat0 default group2  cap:k
-event1   DEVICE_ADDED     Power Button                      seat0 default group3  cap:k
-event2   DEVICE_ADDED     Sleep Button                      seat0 default group4  cap:k
-event9   DEVICE_ADDED     Integrated_Webcam_HD: Integrate   seat0 default group5  cap:k
-event10  DEVICE_ADDED     Integrated_Webcam_HD: Integrate   seat0 default group5  cap:k
-event13  DEVICE_ADDED     Wacom HID 486A Pen                seat0 default group6  cap:T  size 344x194mm calib
-event14  DEVICE_ADDED     Wacom HID 486A Finger             seat0 default group6  cap:t  size 344x194mm ntouches 10 calib
-event12  DEVICE_ADDED     DELL080D:00 06CB:7A13 Touchpad    seat0 default group7  cap:pg  size 102x77mm tap(dl off) left scroll-nat scroll-2fg-edge click-buttonareas-clickfinger dwt-on
-event15  DEVICE_ADDED     CalDigit, Inc. CalDigit Thunderbolt 3 Audio seat0 default group8  cap:k
-event16  DEVICE_ADDED     Razer Razer Imperator             seat0 default group9  cap:p left scroll-nat scroll-button
-event23  DEVICE_ADDED     Razer Razer Imperator Keyboard    seat0 default group9  cap:k
-event24  DEVICE_ADDED     Razer Razer Imperator Consumer Control seat0 default group9  cap:kp scroll-nat
-event25  DEVICE_ADDED     Razer Razer Imperator System Control seat0 default group9  cap:k
-event26  DEVICE_ADDED     TypeMatrix.com USB Keyboard       seat0 default group10 cap:k
-event27  DEVICE_ADDED     TypeMatrix.com USB Keyboard System Control seat0 default group10 cap:k
-event28  DEVICE_ADDED     TypeMatrix.com USB Keyboard Consumer Control seat0 default group10 cap:kp scroll-nat
-event8   DEVICE_ADDED     Intel Virtual Button driver       seat0 default group11 cap:kS
-event17  DEVICE_ADDED     HDA Intel PCH Headphone Mic       seat0 default group12 cap:
-event18  DEVICE_ADDED     HDA Intel PCH HDMI/DP,pcm=3       seat0 default group12 cap:
-event19  DEVICE_ADDED     HDA Intel PCH HDMI/DP,pcm=7       seat0 default group12 cap:
-event20  DEVICE_ADDED     HDA Intel PCH HDMI/DP,pcm=8       seat0 default group12 cap:
-event21  DEVICE_ADDED     HDA Intel PCH HDMI/DP,pcm=9       seat0 default group12 cap:
-event22  DEVICE_ADDED     HDA Intel PCH HDMI/DP,pcm=10      seat0 default group12 cap:
-event6   DEVICE_ADDED     Intel HID events                  seat0 default group13 cap:k
-event7   DEVICE_ADDED     Intel HID 5 button array          seat0 default group14 cap:k
-event11  DEVICE_ADDED     Dell WMI hotkeys                  seat0 default group15 cap:k
-event4   DEVICE_ADDED     AT Translated Set 2 keyboard      seat0 default group16 cap:k
-event8   SWITCH_TOGGLE     +3.90s  switch tablet-mode state 1
 event8   SWITCH_TOGGLE     +5.44s  switch tablet-mode state 0

有关此“英特尔虚拟按钮驱动程序”的更多详细信息，它似乎负责切换到tablet-mode：

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Intel Virtual Button driver"
P: Phys=
S: Sysfs=/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/INT33D6:00/input/input8
U: Uniq=
H: Handlers=kbd event8 
B: PROP=0
B: EV=33
B: KEY=2000000000000 0 0 0 0 1000000000000 0 201c000000000000 0
B: MSC=10
B: SW=2

 

$ find /sys/bus/ -name 'PNP0C09:00'
/sys/bus/platform/devices/PNP0C09:00
/sys/bus/acpi/devices/PNP0C09:00
/sys/bus/acpi/drivers/ec/PNP0C09:00

 

$ find /sys/devices/ -name 'PNP0C09:00'
/sys/devices/pci0000:00/0000:00:1f.0/PNP0C09:00
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:11/PNP0C09:00

 

$ udevadm info /sys/class/input/event8
P: /devices/pci0000:00/0000:00:1f.0/PNP0C09:00/INT33D6:00/input/input8/event8
N: input/event8
S: input/by-path/pci-0000:00:1f.0-platform-INT33D6:00-event
E: DEVLINKS=/dev/input/by-path/pci-0000:00:1f.0-platform-INT33D6:00-event
E: DEVNAME=/dev/input/event8
E: DEVPATH=/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/INT33D6:00/input/input8/event8
E: ID_INPUT=1
E: ID_INPUT_KEY=1
E: ID_INPUT_SWITCH=1
E: ID_PATH=pci-0000:00:1f.0-platform-INT33D6:00
E: ID_PATH_TAG=pci-0000_00_1f_0-platform-INT33D6_00
E: MAJOR=13
E: MINOR=72
E: SUBSYSTEM=input
E: TAGS=:power-switch:
E: USEC_INITIALIZED=5811208
laptop devices

2 个回答

  1. Best Answer

    您可以测试取消绑定父设备上的驱动程序。这将删除子设备以及存在的任何其他子input0设备。

    cd /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00
echo PNP0C0D:00 | sudo tee driver/unbind

    第二个示例，基于您提到的其他输入设备：

    cd /sys/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/INT33D6:00
echo INT33D6:00 | sudo tee driver/unbind

    （如果您安排自动运行这样的命令，您将需要确保它在绑定驱动程序后运行......在许多情况下，我认为您可以将其放入其中rc.local）。

    进一步阅读

    LWN.net 在此处描述了此功能：手动驱动程序绑定和解除绑定。

    • 5

  2. 您可以通过更改 systemd- logind配置来永久忽略盖子开关事件/etc/systemd/logind.conf。

    从我自己的系统：

    [Login]
HandleLidSwitch=ignore
HandleLidSwitchDocked=ignore

    进行更改后，您可以systemctl restart systemd-logind使其生效。

    • 1

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