Phone 100% reboots when writing keyboard data into /dev/hidg1 after USB unplugged

[WuDi-ZhanShen]

I have successfully made an APP to change my Android to a USB Keyoard by writing data into /dev/hidg1 after using GSB Gadget Tool ----add function --- Keyboard !! That's really cool. The only question is why my Android 100% reboots automaticly when i unplug the USB from my computer and then write a keyboard data to /dev/hidg1.

And i want adding new USB function "GamePad" into USB Gadget Tool !! Thanks a lot !!

[tejado]

Can you try to add a new gadget and NOT a new function to an existing gadget? Depending on the phone vendor, there might be some incompatibilities.
What phone and OS (stock or custom rom, Android Version, Kernel version) are you using?

Adding GamePad should be really simple. We just need to have the respective descriptor for the GamePad you want.

[WuDi-ZhanShen]

I tried adding a new gadget 'Keyboard&Mouse' , and there's two new higds appeared in /dev/hidg2 and /dev/hidg3. However I can't writing data into these two hidgs. When i try to write, there will be an IOException Error Message:

Error!

write failed: errno 108 (Cannot send after transport endpoint shutdown)

I'm confused because after that I change to the ordinally gadget and add a Keyboard function and writing data into /dev/hidg1, and there is no Error Message and USB keyboard works well.

My phone is Redmi Note 11T Pro, Android 12

KERNEL_VERSION=5.10.66
CONFIG_PCI_ENDPOINT_CONFIGFS=NOT_SET
CONFIG_USB_CONFIGFS=y
CONFIG_USB_CONFIGFS_UEVENT=y
CONFIG_USB_CONFIGFS_SERIAL=y
CONFIG_USB_CONFIGFS_ACM=y
CONFIG_USB_CONFIGFS_OBEX=NOT_SET
CONFIG_USB_CONFIGFS_NCM=y
CONFIG_USB_CONFIGFS_ECM=y
CONFIG_USB_CONFIGFS_ECM_SUBSET=NOT_SET
CONFIG_USB_CONFIGFS_RNDIS=y
CONFIG_USB_CONFIGFS_EEM=y
CONFIG_USB_CONFIGFS_MASS_STORAGE=y
CONFIG_USB_CONFIGFS_F_LB_SS=NOT_SET
CONFIG_USB_CONFIGFS_F_FS=y
CONFIG_USB_CONFIGFS_F_ACC=y
CONFIG_USB_CONFIGFS_F_AUDIO_SRC=y
CONFIG_USB_CONFIGFS_F_UAC1=NOT_SET
CONFIG_USB_CONFIGFS_F_UAC1_LEGACY=NOT_SET
CONFIG_USB_CONFIGFS_F_UAC2=y
CONFIG_USB_CONFIGFS_F_MIDI=y
CONFIG_USB_CONFIGFS_F_HID=y
CONFIG_USB_CONFIGFS_F_UVC=y
CONFIG_USB_CONFIGFS_F_PRINTER=NOT_SET
CONFIG_IIO_CONFIGFS=NOT_SET
CONFIG_CONFIGFS_FS=y

[Kissycat]

时隔多年，打扰了。
同红米note11tp，请问您是怎么让键盘在这台手机上正常工作的？
我尝试了将/dev/hidg1&2重命名为hidg0&1，键盘软件就不会报错，但仍然无法被Windows识别；
也尝试将.66内核的USB源码更新到5.10 lts最新，仍然无效；
也尝试了老哥你仓库里的那个软件，按你写的步骤来，还是无效..
求老哥指教一二😭

[WuDi-ZhanShen]

是否hidg1和2设置为键盘和鼠标的顺序反了呢

…

---Original--- From: ***@***.***> Date: Wed, Nov 12, 2025 18:06 PM To: ***@***.***>; Cc: ***@***.******@***.***>; Subject: Re: [tejado/android-usb-gadget] Phone 100% reboots when writingkeyboard data into /dev/hidg1 after USB unplugged (Issue #45) Kissycat left a comment (tejado/android-usb-gadget#45) 时隔多年，打扰了。 同红米note11tp，请问您是怎么让键盘在这台手机上正常工作的？ 我尝试了将/dev/hidg1&2重命名为hidg0&1，键盘软件就不会报错，但仍然无法被Windows识别； 也尝试将.66内核的USB源码更新到5.10 lts最新，仍然无效； 也尝试了老哥你仓库里的那个软件，按你写的步骤来，还是无效.. 求老哥指教一二😭 Screenshot_2025-11-12-17-59-27-383_com.emu.anyUSB.jpg (view on web) — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[Kissycat]

是否hidg1和2设置为键盘和鼠标的顺序反了呢
…

交换这两个设备也不行，Windows都会提示设备描述符请求失败，或是设备无法启动 代码10

[WuDi-ZhanShen]

确实没遇到过，我测试软件的时候在4个不同安卓版本的不同型号手机上都没问题。你换个windows电脑看看，是否是你电脑问题

…

---Original--- From: ***@***.***> Date: Wed, Nov 12, 2025 19:35 PM To: ***@***.***>; Cc: ***@***.******@***.***>; Subject: Re: [tejado/android-usb-gadget] Phone 100% reboots when writingkeyboard data into /dev/hidg1 after USB unplugged (Issue #45) Kissycat left a comment (tejado/android-usb-gadget#45) 是否hidg1和2设置为键盘和鼠标的顺序反了呢 … 交换这两个设备也不行，Windows都会提示设备描述符请求失败 — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[Kissycat]

确实没遇到过，我测试软件的时候在4个不同安卓版本的不同型号手机上都没问题。你换个windows电脑看看，是否是你电脑问题

尝试了多台电脑，多台手机，只有这台优秀的LCD机子在每台Windows上都不行，添加到原有g1是能识别为键盘但是设备无法启动，添加到新的gadget配置就是设备描述符请求失败
搞不懂了
另外使用终端运行您的程序我这边没有任何信息输出，没有报错也没有运行成功的提示

[Kissycat]

找到问题所在了，米米内核里这段不知道从哪来的代码害的，但是把1改成0就好了...