Raspberry pi 为什么禁用蓝牙时我的RPi UART0（TTYAM0）会冻结？

我有一个raspberry pi 3型号b（Raspbian GNU/Linux 10（buster）），我想禁用连接到UART0（引脚8和10）的蓝牙模块，以利用UART0。当我将

dtoverlay=disable bt

添加到/boot/config.txt的末尾并连接UART设备时，raspberry pi会冻结或注销我

有人知道为什么会发生这种情况吗

我已经卸载了使用蓝牙的应用程序。 我已经运行了以下命令：

sudo systemctl disable hciuart.service
sudo systemctl disable bluealsa.service
sudo systemctl disable bluetooth.service

我的

/boot/config.txt

b文件如下所示：

# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
#dtparam=i2s=on
dtparam=spi=on

# Uncomment this to enable infrared communication.
#dtoverlay=gpio-ir,gpio_pin=17
#dtoverlay=gpio-ir-tx,gpio_pin=18

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2

[all]
#dtoverlay=vc4-fkms-v3d

# Enable UART
enable_uart=1

---

非常感谢您的帮助。

我发现在

/boot/config.txt

中添加不必要的空格导致了我的错误

我曾写道：

dtoverlay = disable-bt

而不是：

dtoverlay=disable-bt

---

此外，它有助于转到

Pi>Preferences>RPi Configurations>Interfaces

，以确保串行端口已启用。

检查dmesg是否有任何可能出错的迹象，但dtoverlay=pi3 disable bt是我在pi3上的行正在工作，因此请尝试将pi3-添加到您的行中，而不仅仅是dtoverlay=disable-bt。谢谢，当我写dtoverlay=pi3 disable bt（带有额外的空格）时，我发现pi并不喜欢。新手犯的错误。