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cavero00 avatar Ubuntu

rename a device using UDEV rules

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cavero00

I am working on a RPI 3 with a ubuntu server 22.04, I have created a rule to change the name of a bluetooth device that I connect via USB but I can't get it to work. that I connect via USB but I can't get it to work.

The device information I get is:

user@user$ udevadm info -a -p /sys/class/bluetooth/hci0

Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0':
    KERNEL=="hci0"
    SUBSYSTEM=="bluetooth"
    DRIVER==""
    ATTR{power/control}=="auto"
    ATTR{power/runtime_active_kids}=="0"
    ATTR{power/runtime_active_time}=="0"
    ATTR{power/runtime_enabled}=="disabled"
    ATTR{power/runtime_status}=="unsupported"
    ATTR{power/runtime_suspended_time}=="0"
    ATTR{power/runtime_usage}=="0"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0':
    KERNELS=="1-1.4:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="btusb"
    ATTRS{authorized}=="1"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bInterfaceClass}=="e0"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bInterfaceProtocol}=="01"
    ATTRS{bInterfaceSubClass}=="01"
    ATTRS{bNumEndpoints}=="03"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="suspended"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{supports_autosuspend}=="1"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4':
    KERNELS=="1-1.4"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="e0"
    ATTRS{bDeviceProtocol}=="01"
    ATTRS{bDeviceSubClass}=="01"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="0mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 2"
    ATTRS{bcdDevice}=="8241"
    ATTRS{bmAttributes}=="c0"
    ATTRS{busnum}=="1"
    ATTRS{configuration}==""
    ATTRS{devnum}=="57"
    ATTRS{devpath}=="1.4"
    ATTRS{devspec}=="(null)"
    ATTRS{idProduct}=="0001"
    ATTRS{idVendor}=="0a12"
    ATTRS{ltm_capable}=="no"
    ATTRS{maxchild}=="0"
    ATTRS{power/active_duration}=="3633284"
    ATTRS{power/autosuspend}=="2"
    ATTRS{power/autosuspend_delay_ms}=="2000"
    ATTRS{power/connected_duration}=="3633276"
    ATTRS{power/control}=="auto"
    ATTRS{power/level}=="auto"
    ATTRS{power/persist}=="1"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="3633076"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="removable"
    ATTRS{rx_lanes}=="1"
    ATTRS{speed}=="12"
    ATTRS{tx_lanes}=="1"
    ATTRS{urbnum}=="117"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1':
    KERNELS=="1-1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceProtocol}=="02"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="2mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0200"
    ATTRS{bmAttributes}=="e0"
    ATTRS{busnum}=="1"
    ATTRS{configuration}==""
    ATTRS{devnum}=="2"
    ATTRS{devpath}=="1"
    ATTRS{idProduct}=="9514"
    ATTRS{idVendor}=="0424"
    ATTRS{ltm_capable}=="no"
    ATTRS{maxchild}=="5"
    ATTRS{power/active_duration}=="22433928"
    ATTRS{power/autosuspend}=="0"
    ATTRS{power/autosuspend_delay_ms}=="0"
    ATTRS{power/connected_duration}=="22433928"
    ATTRS{power/control}=="auto"
    ATTRS{power/level}=="auto"
    ATTRS{power/runtime_active_kids}=="2"
    ATTRS{power/runtime_active_time}=="22433534"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="unknown"
    ATTRS{rx_lanes}=="1"
    ATTRS{speed}=="480"
    ATTRS{tx_lanes}=="1"
    ATTRS{urbnum}=="6637"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1':
    KERNELS=="usb1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{authorized_default}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceProtocol}=="01"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="0mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0515"
    ATTRS{bmAttributes}=="e0"
    ATTRS{busnum}=="1"
    ATTRS{configuration}==""
    ATTRS{devnum}=="1"
    ATTRS{devpath}=="0"
    ATTRS{idProduct}=="0002"
    ATTRS{idVendor}=="1d6b"
    ATTRS{interface_authorized_default}=="1"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="Linux 5.15.0-1012-raspi dwc2_hsotg"
    ATTRS{maxchild}=="1"
    ATTRS{power/active_duration}=="22434148"
    ATTRS{power/autosuspend}=="0"
    ATTRS{power/autosuspend_delay_ms}=="0"
    ATTRS{power/connected_duration}=="22434156"
    ATTRS{power/control}=="auto"
    ATTRS{power/level}=="auto"
    ATTRS{power/runtime_active_kids}=="1"
    ATTRS{power/runtime_active_time}=="22434153"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{product}=="DWC OTG Controller"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="unknown"
    ATTRS{rx_lanes}=="1"
    ATTRS{serial}=="3f980000.usb"
    ATTRS{speed}=="480"
    ATTRS{tx_lanes}=="1"
    ATTRS{urbnum}=="25"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/platform/soc/3f980000.usb':
    KERNELS=="3f980000.usb"
    SUBSYSTEMS=="platform"
    DRIVERS=="dwc2"
    ATTRS{driver_override}=="(null)"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="1"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"

  looking at parent device '/devices/platform/soc':
    KERNELS=="soc"
    SUBSYSTEMS=="platform"
    DRIVERS=="simple-pm-bus"
    ATTRS{driver_override}=="(null)"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="1"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"

  looking at parent device '/devices/platform':
    KERNELS=="platform"
    SUBSYSTEMS==""
    DRIVERS==""
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"

The rule I created is:

user@user$ cat /etc/udev/rules.d/96-bt.rules
SUBSYSTEMS=="usb", ACTION=="add", ATTRS{serial}=="3f980000.usb", SYMLINK+="test"

Once I have created the rule I reload the rules with:

sudo udevadm control --reload

But when I disconnect and connect the usb its name that appears is the same as before creating the rule:

user@user$ hciconfig
hci0: Type: Primary Bus: USB
        BD Address: 00:01:95:47:E0:3A ACL MTU: 310:10 SCO MTU: 64:8
        UP RUNNING
        RX bytes:660 acl:0 sco:0 events:43 errors:0
        TX bytes:2172 acl:0 sco:0 commands:42 errors:0

hci1: Type: Primary Bus: UART
        BD Address: B8:27:EB:F0:3D:92 ACL MTU: 1021:8 SCO MTU: 64:1
        UP RUNNING
        RX bytes:3596 acl:0 sco:0 events:166 errors:0
        TX bytes:4836 acl:0 sco:0 commands:143 errors:0

Can anyone tell me what I'm doing wrong or what's wrong with me?

Thanks.

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