Linux 鼠标和键盘在 qemu 模拟器中不起作用
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Mouse and Keyboard not working in qemu emulator
提问by Zafrullah Syed
I am trying to run Yocto Image in qemu on my Ubuntu laptop with the following command.
我正在尝试使用以下命令在我的 Ubuntu 笔记本电脑上的 qemu 中运行 Yocto Image。
qemu-system-arm -M overo -m 256 -sd ./test.img -clock unix -serial stdio -device usb-mouse -device usb-kbd
Qemu works fine and the image is booted pretty clean, but I am unable to use my keyboard and Mouse. On any key press I get this warning.
Qemu 工作正常，映像启动时非常干净，但我无法使用键盘和鼠标。在任何按键按下时，我都会收到此警告。
usb-kbd: warning: key event queue full
Any workaround for this unresponsive keyboard?
这个无响应的键盘有什么解决方法吗？
采纳答案by Zafrullah Syed
The problem was, I need to specify USB bus number with device number for USB Pass-Through.
Get the list of USB's by this command lsusband it will list them as following:
问题是，我需要为 USB Pass-Through 指定带有设备编号的 USB 总线编号。通过此命令获取 USB 列表，lsusb它将列出如下：
My keyboard bus number is 002 and address is 001. So, change the command based on the device number and address. So, my command will be as follows:
我的键盘总线号是002，地址是001。所以，根据设备号和地址更改命令。所以，我的命令如下：
qemu-system-arm -M overo -m 256 -sd ./test.img -clock unix -serial stdio -usb -device usb-host,hostbus=2,hostaddr=1
You need to add this line -usb -device usb-host,hostbus=2,hostaddr=1based on the device number and address. To get cursor pointer working add -show-cursoras specified by here
您需要-usb -device usb-host,hostbus=2,hostaddr=1根据设备号和地址添加此行。要使光标指针-show-cursor按照此处指定的方式工作，请添加
回答by vinay hunachyal
Add -show-cursorargument to your command.
-show-cursor向您的命令添加参数。
i.e qemu-system-arm -M overo -m 256 -sd ./test.img -clock unix -serial stdio -device usb-mouse -device usb-kbd -show-cursor
IE qemu-system-arm -M overo -m 256 -sd ./test.img -clock unix -serial stdio -device usb-mouse -device usb-kbd -show-cursor
That will emulate your cursor pointer
这将模拟您的光标指针
回答by Patrick Smit
I had the same problem, installing os x 10.0 and the keyboard stopped working, on installing os x 10.1 no mouse even, but after removing the following entries I got it to work (OS X gave me a hint saying USB error at start up in verbose mode)
我遇到了同样的问题，安装 os x 10.0 并且键盘停止工作，在安装 os x 10.1 时甚至没有鼠标，但是在删除以下条目后我让它工作了（OS X 提示我在启动时出现 USB 错误）详细模式）
-device usb-mouse -device usb-kbd
