我有一台运行 Ubuntu 20.04 的 Dell Inspiron 15 5000 系列笔记本电脑。这台笔记本电脑具有触摸屏功能，我想永久禁用它。我尝试了以下操作：
xinput --list
WARNING: running xinput against an Xwayland server. See the xinput man page for details.
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ xwayland-pointer:17 id=6 [slave pointer (2)]
⎜ ↳ xwayland-relative-pointer:17 id=7 [slave pointer (2)]
⎜ ↳ xwayland-touch:17 id=9 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ xwayland-keyboard:17 id=8 [slave keyboard (3)]
我尝试通过以下命令禁用 xwayland-touch:17：
xinput disable 9
并得到：
WARNING: running xinput against an Xwayland server. See the xinput man page for details.
我阅读了 xinput 手册页中的“XWAYLAND”部分，但仍然不确定如何永久禁用触摸屏。
有人可以帮忙吗？