Elan 触摸屏不工作

Question 1

由于我没有您的硬件，因此无法进行测试。话虽如此，过去我曾使用过硬件支持。

根据来自 Ubuntu 软件包搜索的结果对于 18.04，您目前有 2 个选项。linux-generic-hwe-18.04 (4.18.0.15.65)和linux-generic-hwe-18.04-edge。

你也许还会发现一些线索这里。

Answer

由于我没有您的硬件，因此无法进行测试。话虽如此，过去我曾使用过硬件支持。

根据来自 Ubuntu 软件包搜索的结果对于 18.04，您目前有 2 个选项。linux-generic-hwe-18.04 (4.18.0.15.65)和linux-generic-hwe-18.04-edge。

你也许还会发现一些线索这里。

Question 2

说实话，我相信这是一个XY问题这个问题的真正根源可能是通过拔掉插入有问题端口的故障设备来解决的，或者这个答案会很有用。此外，有时 USB 连接会因为端口中的灰尘而失败，可以用罐装空气清理干净来解决。

回答你最初提出的问题，不。我认为你不能禁用笔记本电脑上的特定端口。很少有集线器允许这样做（请参阅 README.md 文件https://github.com/mvp/uhubctl/)，但它们很少见，而且我认为您的笔记本电脑主板不会支持此功能。据我所知，自 2.6.33 版以来，内核不支持禁用每个端口。以下是摘录：

The user interface for dynamic PM
    ---------------------------------

The user interface for controlling dynamic PM is located in the power/
subdirectory of each USB device's sysfs directory, that is, in
/sys/bus/usb/devices/.../power/ where "..." is the device's ID.  The
relevant attribute files are: wakeup, control, and
autosuspend_delay_ms.  (There may also be a file named "level"; this
file was deprecated as of the 2.6.35 kernel and replaced by the
"control" file.  In 2.6.38 the "autosuspend" file will be deprecated
and replaced by the "autosuspend_delay_ms" file.  The only difference
is that the newer file expresses the delay in milliseconds whereas the
older file uses seconds.  Confusingly, both files are present in 2.6.37
but only "autosuspend" works.)

    power/wakeup

        This file is empty if the device does not support
        remote wakeup.  Otherwise the file contains either the
        word "enabled" or the word "disabled", and you can
        write those words to the file.  The setting determines
        whether or not remote wakeup will be enabled when the
        device is next suspended.  (If the setting is changed
        while the device is suspended, the change won't take
        effect until the following suspend.)

    power/control

        This file contains one of two words: "on" or "auto".
        You can write those words to the file to change the
        device's setting.

        "on" means that the device should be resumed and
        autosuspend is not allowed.  (Of course, system
        suspends are still allowed.)

        "auto" is the normal state in which the kernel is
        allowed to autosuspend and autoresume the device.

        (In kernels up to 2.6.32, you could also specify
        "suspend", meaning that the device should remain
        suspended and autoresume was not allowed.  This
        setting is no longer supported.)

来源：https://www.kernel.org/doc/Documentation/usb/power-management.txt

编辑：根据您的评论，在回答您问题的当前版本时，您与触摸屏的连接存在问题，您可以使用以下命令进行观看udevadm monitor

自从你不喜欢摆弄你的硬件我建议您将其送至合格的技术人员进行维修，或者如果在保修期内，请联系制造商或购买地点。

Answer