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Curiosity #1

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@slowm0e

Hi Novaws.

Thanks for posting this.

Firmware upgrade successful on RTL8761BU(0bda:876e), running Ubuntu 24.04.2 LTS - Haven't run it for long yet, so it's still Hello World.

I'm interested how you fixed it? Been having this problem for ages on RTL8852BU (M.2 E Key module). Bought a new USB dongle, in the blind, and found out it was based of RTL8761BU. Kept crashing in the same way. Found your fix, and flashed it.

Hope you see this.

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  1. slowm0e commented on Sep 16, 2025

    @slowm0e
    Author

    Ah. Doesnt matter. Didnt even last an hour. Will be throwing this dongle in the bin.
    [4417086.731245] Bluetooth: hci0: command 0x2042 tx timeout
    [4417086.731251] Bluetooth: hci0: Opcode 0x2042 failed: -110
    [4417086.731266] Bluetooth: hci0: Unable to disable scanning: -110
    [4417088.779131] Bluetooth: hci0: Opcode 0x2042 failed: -110
    [4417088.779135] Bluetooth: hci0: command 0x2042 tx timeout
    [4417088.779152] Bluetooth: hci0: Unable to disable scanning: -110
    [4417088.779160] Bluetooth: hci0: Unable to disable scanning: -110
    [4417090.827036] Bluetooth: hci0: command 0x2042 tx timeout
    [4417090.827064] Bluetooth: hci0: Opcode 0x2042 failed: -110
    [4417090.827081] Bluetooth: hci0: Unable to disable scanning: -110
    [4417090.827086] Bluetooth: hci0: stop background scanning failed: -110
    [4417100.618483] Bluetooth: hci0: Opcode 0x2042 failed: -110
    [4417100.618491] Bluetooth: hci0: command 0x2042 tx timeout
    [4417100.618507] Bluetooth: hci0: Unable to disable scanning: -110
    [4417100.618513] Bluetooth: hci0: Unable to disable scanning: -110
    [4417102.666395] Bluetooth: hci0: command 0x2042 tx timeout
    [4417102.666395] Bluetooth: hci0: Opcode 0x2042 failed: -110
    [4417102.666420] Bluetooth: hci0: Unable to disable scanning: -110
    [4417102.666425] Bluetooth: hci0: stop background scanning failed: -110
    [4417102.666429] Bluetooth: hci0: Resetting usb device.
    [4417104.714273] Bluetooth: hci0: command 0x2042 tx timeout
    [4417104.714273] Bluetooth: hci0: Opcode 0x2042 failed: -110
    [4417104.714297] Bluetooth: hci0: Unable to disable scanning: -110
    [4417104.714302] Bluetooth: hci0: disable scanning failed: -110
    [4417104.714303] Bluetooth: hci0: Resetting usb device.
    [4417104.714310] Bluetooth: hci0: start background scanning failed: -110
    [4417104.849896] usb 1-1: reset full-speed USB device number 8 using xhci_hcd
    [4417104.979558] Bluetooth: hci2: urb 00000000d3869d0f failed to resubmit (2)
    [4417107.018147] Bluetooth: hci2: command 0xfc61 tx timeout
    [4417107.018185] Bluetooth: hci2: RTL: Failed to generate devcoredump
    [4417107.018196] Bluetooth: hci2: RTL: RTL: Read reg16 failed (-110)
    [4417107.132550] usb 1-1: reset full-speed USB device number 8 using xhci_hcd
    [4417107.262210] Bluetooth: hci2: unexpected event for opcode 0x2042
    [4417107.263585] Bluetooth: hci2: unexpected event for opcode 0xfc61

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