我在 Acer aspire v3 572g、任何发行版和任何“新”版本上都遇到了这个问题（在 ubuntu 10.04lts 上没有出现任何问题）。触摸板在启动后工作正常，但使用一段时间后（如果不使用或几乎不使用它，它仍然工作），触摸板似乎进入了某种节能模式：如果几秒钟不使用，它检测到的第一个输入会有半秒的延迟。无论使用 nvidia 专有或开源驱动程序，有无 synaptics 驱动程序，甚至卸载 xserver-xorg-input-libinput 并使用 synaptics（键盘停止工作但问题仍然存在），问题仍然存在。我在这里粘贴了一些来自 Ubuntu 19.10 的 xinput 和 synclient 输出，但我不确定它们是否与问题有关：
xin输入列表
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ SYN1B7E:01 06CB:2970 Touchpad id=12 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ Video Bus id=10 [slave keyboard (3)]
↳ HD WebCam: HD WebCam id=11 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]
↳ Acer WMI hotkeys id=14 [slave keyboard (3)]
xinput--列表属性“12”
Device 'SYN1B7E:01 06CB:2970 Touchpad':
Device Enabled (197): 1
Coordinate Transformation Matrix (199): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (326): 1
Device Accel Constant Deceleration (327): 2.500000
Device Accel Adaptive Deceleration (328): 1.000000
Device Accel Velocity Scaling (329): 12.640978
Synaptics Edges (330): 49, 1187, 48, 850
Synaptics Finger (331): 25, 30, 0
Synaptics Tap Time (332): 180
Synaptics Tap Move (333): 67
Synaptics Tap Durations (334): 180, 180, 100
Synaptics ClickPad (335): 1
Synaptics Middle Button Timeout (336): 0
Synaptics Two-Finger Pressure (337): 282
Synaptics Two-Finger Width (338): 7
Synaptics Scrolling Distance (339): 30, 30
Synaptics Edge Scrolling (340): 0, 0, 0
Synaptics Two-Finger Scrolling (341): 1, 1
Synaptics Move Speed (342): 1.000000, 1.750000, 0.130976, 0.000000
Synaptics Off (343): 0
Synaptics Locked Drags (344): 0
Synaptics Locked Drags Timeout (345): 5000
Synaptics Tap Action (346): 2, 3, 0, 0, 1, 3, 0
Synaptics Click Action (347): 1, 3, 0
Synaptics Circular Scrolling (348): 0
Synaptics Circular Scrolling Distance (349): 0.100000
Synaptics Circular Scrolling Trigger (350): 0
Synaptics Circular Pad (351): 0
Synaptics Palm Detection (352): 0
Synaptics Palm Dimensions (353): 10, 200
Synaptics Coasting Speed (354): 20.000000, 50.000000
Synaptics Pressure Motion (355): 30, 160
Synaptics Pressure Motion Factor (356): 1.000000, 1.000000
Synaptics Resolution Detect (357): 1
Synaptics Grab Event Device (358): 0
Synaptics Gestures (359): 1
Synaptics Capabilities (360): 1, 0, 0, 1, 1, 0, 0
Synaptics Pad Resolution (361): 12, 12
Synaptics Area (362): 0, 0, 0, 0
Synaptics Soft Button Areas (363): 618, 0, 736, 0, 0, 0, 0, 0
Synaptics Noise Cancellation (364): 7, 7
Device Product ID (322): 1739, 10608
Device Node (321): "/dev/input/event6"
synclient-l
Parameter settings:
LeftEdge = 49
RightEdge = 1187
TopEdge = 48
BottomEdge = 850
FingerLow = 25
FingerHigh = 30
MaxTapTime = 180
MaxTapMove = 67
MaxDoubleTapTime = 180
SingleTapTimeout = 180
ClickTime = 100
EmulateMidButtonTime = 0
EmulateTwoFingerMinZ = 282
EmulateTwoFingerMinW = 7
VertScrollDelta = 30
HorizScrollDelta = 30
VertEdgeScroll = 0
HorizEdgeScroll = 0
CornerCoasting = 0
VertTwoFingerScroll = 1
HorizTwoFingerScroll = 1
MinSpeed = 1
MaxSpeed = 1.75
AccelFactor = 0.130976
TouchpadOff = 0
LockedDrags = 0
LockedDragTimeout = 5000
RTCornerButton = 2
RBCornerButton = 3
LTCornerButton = 0
LBCornerButton = 0
TapButton1 = 1
TapButton2 = 3
TapButton3 = 0
ClickFinger1 = 1
ClickFinger2 = 3
ClickFinger3 = 0
CircularScrolling = 0
CircScrollDelta = 0.1
CircScrollTrigger = 0
CircularPad = 0
PalmDetect = 0
PalmMinWidth = 10
PalmMinZ = 200
CoastingSpeed = 20
CoastingFriction = 50
PressureMotionMinZ = 30
PressureMotionMaxZ = 160
PressureMotionMinFactor = 1
PressureMotionMaxFactor = 1
ResolutionDetect = 1
GrabEventDevice = 0
TapAndDragGesture = 1
AreaLeftEdge = 0
AreaRightEdge = 0
AreaTopEdge = 0
AreaBottomEdge = 0
HorizHysteresis = 7
VertHysteresis = 7
ClickPad = 1
RightButtonAreaLeft = 618
RightButtonAreaRight = 0
RightButtonAreaTop = 736
RightButtonAreaBottom = 0
MiddleButtonAreaLeft = 0
MiddleButtonAreaRight = 0
MiddleButtonAreaTop = 0
MiddleButtonAreaBottom = 0
这可能是电源管理问题，我试图按照此链接上的步骤操作，但我真的不知道我在这里做什么： https://wiki.ubuntu.com/DebuggingTouchpadDetection
提前感谢任何建议。
答案1
我找到了解决问题的方法：
正如这里所建议的https://wiki.ubuntu.com/DebuggingTouchpadDetection我试图通过以 root 身份运行以下命令来禁用触摸板的电源管理：
echo 'on' > '/path/to/device/power/control'
但当使用 中写入的设备路径时，这不起作用/proc/bus/input/devices。
所以我安装了动力顶并且我能够找到正确的设备和路径来使用：Runtime PM for I2C Adapter i2c-0 (Synopsys DesignWare I2C adapter)；
以 root 身份运行 powertop 命令来禁用此设备的自动挂起功能：
echo 'on' > '/sys/bus/i2c/devices/i2c-0/device/power/control'
这确实解决了问题！我现在唯一不知道的是如何启动时运行它。（因为我没有 /etc/rc.local）
（编辑）
要在系统启动时运行解决方法，请使用systemd创建/etc/systemd/system/disable-touchpad-pm.service包含以下内容：
[Unit]
Description=disables Acer aspire v3 572g touchpad PM to work around input delays
[Service]
Type=oneshot
ExecStart=/bin/sh -c "echo on > /sys/bus/i2c/devices/i2c-0/device/power/control"
[Install]
WantedBy=multi-user.target
然后在终端上运行：
sudo systemctl daemon-reload && sudo systemctl enable disable-touchpad-pm