由于某种原因，ubuntu 20.04 触摸屏在一段时间后停止工作（Acer r7 371t）。谷歌没有提供太多帮助，xinput 启用/禁用不起作用，必须重新启动笔记本电脑才能再次工作。我不确定使用 X11 进行调试时要提供什么信息。
新输入
Virtual core pointer id=2 [master pointer
(3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave
pointer (2)]
⎜ ↳ SYN1B7B:00 06CB:2991 Mouse id=9 [slave
pointer (2)]
⎜ ↳ SYN1B7B:00 06CB:2991 Touchpad id=10 [slave
pointer (2)]
⎜ ↳ SYNAPTICS Synaptics Touch Digitizer V04 Mouse id=16 [slave
pointer (2)]
⎜ ↳ SYNAPTICS Synaptics Touch Digitizer V04 id=17 [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)]
↳ Power Button id=7 [slave keyboard (3)]
↳ Sleep Button id=8 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
↳ Acer WMI hotkeys id=12 [slave keyboard (3)]
↳ HD WebCam: HD WebCam id=13 [slave keyboard (3)]
↳ Video Bus id=14 [slave keyboard (3)]
↳ SYNAPTICS Synaptics Touch Digitizer V04 id=15 [slave keyboard (3)]
↳ LUXA2 Lavi D (AVRCP) id=18 [slave keyboard (3)]
xinput 列表属性 16
Device 'SYNAPTICS Synaptics Touch Digitizer V04 Mouse':
Device Enabled (164): 1
Coordinate Transformation Matrix (166): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Natural Scrolling Enabled (301): 0
libinput Natural Scrolling Enabled Default (302): 0
libinput Scroll Methods Available (303): 0, 0, 1
libinput Scroll Method Enabled (304): 0, 0, 0
libinput Scroll Method Enabled Default (305): 0, 0, 0
libinput Button Scrolling Button (306): 3
libinput Button Scrolling Button Default (307): 3
libinput Accel Speed (308): 0.000000
libinput Accel Speed Default (309): 0.000000
libinput Accel Profiles Available (310): 1, 1
libinput Accel Profile Enabled (311): 1, 0
libinput Accel Profile Enabled Default (312): 1, 0
libinput Left Handed Enabled (313): 0
libinput Left Handed Enabled Default (314): 0
libinput Send Events Modes Available (286): 1, 0
libinput Send Events Mode Enabled (287): 0, 0
libinput Send Events Mode Enabled Default (288): 0, 0
Device Node (289): "/dev/input/event8"
Device Product ID (290): 1739, 30331
libinput Drag Lock Buttons (315): <no items>
libinput Horizontal Scroll Enabled (316): 1
答案1
我的联想 Yoga S1 也遇到了同样的问题。我发现您的笔记本电脑与我的 Yoga 使用相同的 Synaptics 触摸屏。
我注意到 journalctl -b 中：
systemd[1]: Starting Firmware update daemon...
fwupd[2737]: ERROR:esys:src/tss2-esys/esys_context.c:69:Esys_Initialize() Initialize default tcti. ErrorCode (0x000a000a)
fwupd[2737]: 21:37:44:0499 FuEngine failed to add udev device /sys/devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.0/0003:06CB:7244.0003/>
fwupd[2737]: 21:37:44:0675 FuEngine device 602b0a6cc821d155208724f0e22f8d111542b74c [SAMSUNG MZ7TE128HMGR-000L1] does not define a vendo>
systemd[1]: Started Firmware update daemon.
我注意到 06CB:7244 是：
$ lsusb
Bus 001 Device 006: ID 06cb:7244 Synaptics, Inc. Synaptics Touch Digitizer V04
我尝试在 /etc/fwupd/daemon.conf 中将插件 synaptics-rmi 列入黑名单：
BlacklistPlugins=synaptics-rmi;test;invalid
但这并没有帮助。最后我做了：
sudo apt remove fwupd
它确实起作用了，但是一定有更好的方法可以通过修改 fwupd 来解决这个问题。