我最近在我的联想 Y9000p 上安装了 ubuntu20.04。触摸板在 Ubuntu 下从来没用过，但在 Windows 下却用得很好。首先，我尝试了 xinput 列表，但没有找到与触摸板相关的任何内容。
$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ SINO WEALTH Legion M5 Wireless Gaming Mouse_2.4G id=10 [slave pointer (2)]
⎜ ↳ SINO WEALTH Legion M5 Wireless Gaming Mouse_2.4G Keyboard id=11 [slave pointer (2)]
⎜ ↳ ITE Tech. Inc. ITE Device(8910) Keyboard 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)]
↳ Integrated Camera: Integrated C id=9 [slave keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Wireless Radio Control id=13 [slave keyboard (3)]
↳ Ideapad extra buttons id=14 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=15 [slave keyboard (3)]
↳ SINO WEALTH Legion M5 Wireless Gaming Mouse_2.4G Keyboard id=16 [slave keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Keyboard id=17 [slave keyboard (3)]
然后我尝试列出 i2c 设备，但什么也没得到。
$ i2cdetect -l
$ ls /dev/i2c*
ls: cannot access '/dev/i2c*': No such file or directory
我不知道我的触摸板 QAQ 发生了什么。