这是我在这里的第一篇帖子。请耐心听我说：我对 Ubuntu 和编程都还很陌生。
我在 Lenovo IdeaCentre AIO 510 上安装了 Ubuntu 16.04 LTS。我的 Wifi 似乎连接得很好。在使用 Ubuntu 之前，我的连接通常很好，在 Windows 中从未遇到过任何问题。但是，我在 Ubuntu 中安装了 Firefox 和 Chrome 浏览器，两者都经常停止连接到互联网。有时只持续几秒钟，有时最多持续 10 分钟左右。然后它会重新连接，几分钟后经常再次断开连接。
我知道有很多问题与我的问题类似，但是我尝试了几种推荐的解决方案，但似乎没有任何效果。不管怎样，我想在一个单独的问题中发帖。
请告诉我我可以为您提供哪些信息。我将从以下内容开始：
输出sudo lshw -C network：
*-network
description: Wireless interface
product: RTL8821AE 802.11ac PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: wlp1s0
version: 00
serial: 78:45:61:c0:27:19
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8821ae driverversion=4.8.0-56-generic firmware=N/A ip=192.168.0.106 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:42 ioport:e000(size=256) memory:fea00000-fea03fff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: enp2s0
version: 0c
serial: fc:45:96:26:79:de
size: 10Mbit/s
capacity: 1Gbit/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 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:33 ioport:d000(size=256) memory:fe900000-fe900fff memory:f0800000-f0803fff
输出iwconfig：
enp2s0 no wireless extensions.
wlp1s0 IEEE 802.11 ESSID:"suddenlink.net-E190"
Mode:Managed Frequency:2.412 GHz Access Point: 68:B6:FC:D3:E1:98
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=66/70 Signal level=-44 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:1 Missed beacon:0
lo no wireless extensions.
输出lspci：
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1576
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 1577
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 98e4 (rev c9)
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 15b3
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 157b
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 157c
00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 157c
00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 157c
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 157b
00:08.0 Encryption controller: Advanced Micro Devices, Inc. [AMD] Device 1578
00:09.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 157d
00:09.2 Audio device: Advanced Micro Devices, Inc. [AMD] Device 157a
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 20)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 4b)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 49)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 4b)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:14.7 SD Host controller: Advanced Micro Devices, Inc. [AMD] FCH SD Flash Controller (rev 01)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15b0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15b1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15b2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15b3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15b4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15b5
01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE
802.11ac PCIe Wireless Network Adapter
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)