我正在尝试找出解决 wifi 连接问题的后续步骤。我在一台古老的 Dell 7110N 上运行 Ubuntu。直到最近，wifi 似乎都很好，但现在我很幸运能获得 1 Mbps。我刚刚安装了 Netgear D7000 路由器，我们所有其他设备都在发出呼呼声（网络管理员说我的信号为 90%）。我尝试过的方法：
- 使用旧内核重启
- 禁用 802.11n（随后重新启用）
- 更改路由器的频道
- 禁用 ipv6（随后重新启用）
- 改变 ant_sel，虽然我不记得我是如何做到这一点的，并且不能确定改变是否生效。
- 从 github 安装 rtlwifi_new 驱动程序，然后将其删除，因为我根本无法连接到 wifi。
我对这个问题进行了更多的谷歌搜索，怀疑我的无线网卡/芯片组可能不受支持。有人能确认这是正确的吗？是否有解决办法？我花了好几天时间解决这个问题，我的孩子几乎认不出我了，我不确定我是否应该放弃并购买无线 USB。
更新：我终于忍无可忍了，重新安装了操作系统。我希望自己能知道问题出在哪里，但现在我正以 70 Mbps 的速度运行，所以我只能祈祷这种情况不会再发生。
lyn@lyn-Dell-System-Inspiron-N7110:~$ lshw -C network
WARNING: you should run this program as super-user.
*-network
description: Wireless interface
product: Centrino Wireless-N 1030 [Rainbow Peak]
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:01:00.0
logical name: wlp1s0
version: 34
serial: 4c:80:93:62:ec:5b
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.0.0-37-generic firmware=18.168.6.1 ip=192.168.0.5 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:32 memory:d0600000-d0601fff
*-network
description: Ethernet interface
product: RTL810xE PCI Express Fast Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 05
serial: 14:fe:b5:9d:97:d6
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical
configuration: broadcast=yes driver=r8169 latency=0 multicast=yes
resources: irq:16 ioport:2000(size=256) memory:d0404000-d0404fff memory:d0400000-d0403fff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
lyn@lyn-Dell-System-Inspiron-N7110:~$ lspci -v
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
Subsystem: Dell 2nd Generation Core Processor Family DRAM Controller
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell 2nd Generation Core Processor Family Integrated Graphics Controller
Flags: bus master, fast devsel, latency 0, IRQ 33
Memory at d0000000 (64-bit, non-prefetchable) [size=4M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
Subsystem: Dell 6 Series/C200 Series Chipset Family MEI Controller
Flags: bus master, fast devsel, latency 0, IRQ 31
Memory at d0705000 (64-bit, non-prefetchable) [size=16]
Capabilities: <access denied>
Kernel driver in use: mei_me
Kernel modules: mei_me
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
Subsystem: Dell 6 Series/C200 Series Chipset Family USB Enhanced Host Controller
Flags: bus master, medium devsel, latency 0, IRQ 16
Memory at d070a000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
Subsystem: Dell 6 Series/C200 Series Chipset Family High Definition Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 34
Memory at d0700000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 16
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: d0600000-d06fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 18
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Memory behind bridge: d0500000-d05fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 16
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 00002000-00002fff
Prefetchable memory behind bridge: 00000000d0400000-00000000d04fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
Subsystem: Dell 6 Series/C200 Series Chipset Family USB Enhanced Host Controller
Flags: medium devsel, IRQ 23
Memory at d0709000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation HM67 Express Chipset LPC Controller (rev 05)
Subsystem: Dell HM67 Express Chipset Family LPC Controller
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port Mobile SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
Subsystem: Dell 6 Series/C200 Series Chipset Family 6 port Mobile SATA AHCI Controller
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 30
I/O ports at 3088 [size=8]
I/O ports at 3094 [size=4]
I/O ports at 3080 [size=8]
I/O ports at 3090 [size=4]
I/O ports at 3060 [size=32]
Memory at d0708000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
Subsystem: Dell 6 Series/C200 Series Chipset Family SMBus Controller
Flags: medium devsel, IRQ 10
Memory at d0704000 (64-bit, non-prefetchable) [size=256]
I/O ports at efa0 [size=32]
Kernel modules: i2c_i801
01:00.0 Network controller: Intel Corporation Centrino Wireless-N 1030 [Rainbow Peak] (rev 34)
Subsystem: Intel Corporation Centrino Wireless-N 1030 BGN
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at d0600000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
02:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) (prog-if 30 [XHCI])
Subsystem: Dell uPD720200 USB 3.0 Host Controller
Flags: fast devsel, IRQ 18
Memory at d0500000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 05)
Subsystem: Dell RTL810xE PCI Express Fast Ethernet controller
Flags: bus master, fast devsel, latency 0, IRQ 16
I/O ports at 2000 [size=256]
Memory at d0404000 (64-bit, prefetchable) [size=4K]
Memory at d0400000 (64-bit, prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169