我在笔记本电脑的一个分区上安装了 Ubuntu 16.04，当我使用 Ubuntu 时，我的 WiFi 范围明显较低。例如，Windows 可以从地下室检测到我家的 wifi 网络，信号只有 4 格，而在 Ubuntu 上它甚至没有显示。这是我输入时的输出lshw -C network：
*-network
description: Wireless interface
product: RTL8723BE PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlo1
version: 00
serial: 70:77:81:2f:d8:9b
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723be driverversion=4.4.0-67-generic firmware=N/A ip=10.0.0.7 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:38 ioport:3000(size=256) memory:f0c00000-f0c03fff
以下是第二部分：
*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 07
serial: 30:8d:99:6c:9a:b7
size: 10Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:32 ioport:2000(size=256) memory:f0b00000-f0b00fff memory:f0800000-f0803fff
我希望有人能帮帮忙。