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Intel Centrino Wireless N-2230 和 Ubuntu 18.04 没有蓝牙适配器

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Intel Centrino Wireless N-2230 和 Ubuntu 18.04 没有蓝牙适配器

Intel Centrino N-2230 是一款 WiFi+蓝牙适配器。在我的笔记本 + Ubuntu 18.04 LTS 安装中，WiFi 运行正常。但是，我无法打开蓝牙设备。

第一次通过 GUI 尝试：系统设置 -> 蓝牙：开关被禁用并且面板显示“未找到蓝牙。连接适配器以使用蓝牙”。

下载了当前无线上网从 Intel 网站下载了固件并将其放入 /lib/firmware。但这并没有解决问题。

蓝牙部分是否需要另一个固件？有人知道从哪里获取它吗？或者只需进行一些配置就可以解决这个问题吗？

#rfkill list
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

#dmesg | grep -i bluetooth
[ 3889.279452] Bluetooth: Core ver 2.22
[ 3889.279482] Bluetooth: HCI device and connection manager initialized
[ 3889.279488] Bluetooth: HCI socket layer initialized
[ 3889.279491] Bluetooth: L2CAP socket layer initialized
[ 3889.279497] Bluetooth: SCO socket layer initialized

#sudo lshw -C network
  *-network                 
       Beschreibung: Kabellose Verbindung
       Produkt: Centrino Wireless-N 2230
       Hersteller: Intel Corporation
       Physische ID: 0
       Bus-Informationen: pci@0000:03:00.0
       Logischer Name: wlp3s0
       Version: c4
       Seriennummer: 68:5d:43:05:68:79
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm msi pciexpress bus_master cap_list ethernet physical wireless
       Konfiguration: broadcast=yes driver=iwlwifi driverversion=5.3.0-46-generic firmware=18.168.6.1 ip=192.168.175.32 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       Ressourcen: irq:33 memory:f7e00000-f7e01fff
  *-network
       Beschreibung: Ethernet interface
       Produkt: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       Hersteller: Realtek Semiconductor Co., Ltd.
       ...

#lsusb
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 04f2:b2bb Chicony Electronics Co., Ltd 
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 0bda:0138 Realtek Semiconductor Corp. RTS5138 Card Reader Controller
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

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