我是 Ubuntu 的新手，但想放弃 Windows。我安装了 Ubuntu 20.04 LTS，一切看起来都很棒。我选择将 Windows 安装保留在单独的分区上，这是 Ubuntu 设置提供的。（很好的选择）
在过去的一个月左右，我注意到下载速度比我第一次安装 Ubuntu 时慢了很多，而且在我的 LAN 上复制数据也受到了严重影响。就像我说的，我是 Linux 新手，但我检查了一下我所知道的东西，发现 5.2GHz 的连接速度只有 6mbps，即使笔记本电脑放在接入点的顶部？
我在网上搜索过答案，但没有任何帮助......
请问有人能指点一下哪里出了问题以及如何解决我的 wifi 速度慢的问题吗？
提前致谢。
uname -a
Linux billysballbag 5.8.0-50-generic #56~20.04.1-Ubuntu SMP Mon Apr 12 21:46:35 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
sudo lshw
description: Notebook
product: 81BJ (LENOVO_MT_81BJ_BU_idea_FM_ideapad 320-17IKB)
vendor: LENOVO
version: Lenovo ideapad 320-17IKB
serial: PF10422D
width: 64 bits
capabilities: smbios-3.0.0 dmi-3.0.0 smp vsyscall32
configuration: administrator_password=disabled boot=normal chassis=notebook family=ideapad 320-17IKB frontpanel_password=disabled keyboard_password=disabled power-on_password=disabled sku=LENOVO_MT_81BJ_BU_idea_FM_ideapad 320-17IKB uuid=25BDE230-EAD3-E711-8A95-54E1ADE03662
*-core
description: Motherboard
product: LNVNB161216
vendor: LENOVO
physical id: 0
version: SDK0J40709 WIN
serial: PF10422D
slot: Type2 - Board Chassis Location
*-firmware
description: BIOS
vendor: LENOVO
physical id: 0
version: 6JCN33WW
date: 06/30/2020
size: 128KiB
capacity: 6080KiB
capabilities: pci upgrade shadowing cdboot bootselect edd int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int9keyboard int10video acpi usb biosbootspecification uefi
*-cpu
description: CPU
product: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
serial: To Be Filled By O.E.M.
slot: U3E1
size: 1842MHz
capacity: 4GHz
width: 64 bits
clock: 100MHz
capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp x86-64 constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d cpufreq
configuration: cores=4 enabledcores=4 threads=8
*-cache:0
description: L1 cache
physical id: 5
slot: L1 Cache
size: 256KiB
capacity: 256KiB
capabilities: synchronous internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 6
slot: L2 Cache
size: 1MiB
capacity: 1MiB
capabilities: synchronous internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 7
slot: L3 Cache
size: 8MiB
capacity: 8MiB
capabilities: synchronous internal write-back unified
configuration: level=3
*-memory
description: System Memory
physical id: 24
slot: System board or motherboard
size: 8GiB
*-bank:0
description: SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2133 MHz (0.5 ns)
product: M471A5244CB0-CRC
vendor: Samsung
physical id: 0
serial: 00000000
slot: ChannelA-DIMM0
size: 4GiB
width: 64 bits
clock: 2133MHz (0.5ns)
*-bank:1
description: SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2133 MHz (0.5 ns)
product: M471A5143SB1-CRC
vendor: Samsung
physical id: 1
serial: 35B7DED3
slot: ChannelB-DIMM0
size: 4GiB
width: 64 bits
clock: 2133MHz (0.5ns)
*-pci
description: Host bridge
product: Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 08
width: 32 bits
clock: 33MHz
configuration: driver=skl_uncore
resources: irq:0
*-display
description: VGA compatible controller
product: UHD Graphics 620
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 07
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:135 memory:92000000-92ffffff memory:a0000000-afffffff ioport:5000(size=64) memory:c0000-dffff
*-usb
description: USB controller
product: Sunrise Point-LP USB 3.0 xHCI Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 21
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:125 memory:94390000-9439ffff
*-usbhost:0
product: xHCI Host Controller
vendor: Linux 5.8.0-50-generic xhci-hcd
physical id: 0
bus info: usb@1
logical name: usb1
version: 5.08
capabilities: usb-2.00
configuration: driver=hub slots=12 speed=480Mbit/s
*-usb:0 UNCLAIMED
description: Generic USB device
vendor: Synaptics, Inc.
physical id: 4
bus info: usb@1:4
version: 1.64
serial: 25dda884e415
capabilities: usb-2.00
configuration: maxpower=100mA speed=12Mbit/s
*-usb:1
description: Bluetooth wireless interface
vendor: Qualcomm Atheros Communications
physical id: 7
bus info: usb@1:7
version: 0.01
capabilities: bluetooth usb-2.01
configuration: driver=btusb maxpower=100mA speed=12Mbit/s
*-usb:2
description: Video
product: EasyCamera
vendor: Chicony Electronics Co.,Ltd.
physical id: 8
bus info: usb@1:8
version: 26.22
serial: 0001
capabilities: usb-2.00
configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
*-usbhost:1
product: xHCI Host Controller
vendor: Linux 5.8.0-50-generic xhci-hcd
physical id: 1
bus info: usb@2
logical name: usb2
version: 5.08
capabilities: usb-3.00
configuration: driver=hub slots=6 speed=5000Mbit/s
*-generic:0
description: Signal processing controller
product: Sunrise Point-LP Thermal subsystem
vendor: Intel Corporation
physical id: 14.2
bus info: pci@0000:00:14.2
version: 21
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=intel_pch_thermal latency=0
resources: irq:18 memory:943b0000-943b0fff
*-generic:1
description: Signal processing controller
product: Sunrise Point-LP Serial IO I2C Controller #0
vendor: Intel Corporation
physical id: 15
bus info: pci@0000:00:15.0
version: 21
width: 64 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=intel-lpss latency=0
resources: irq:16 memory:943b1000-943b1fff
*-communication
description: Communication controller
product: Sunrise Point-LP CSME HECI #1
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 21
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei_me latency=0
resources: irq:134 memory:943b2000-943b2fff
*-raid
description: RAID bus controller
product: 82801 Mobile SATA Controller [RAID mode]
vendor: Intel Corporation
physical id: 17
bus info: pci@0000:00:17.0
version: 21
width: 32 bits
clock: 66MHz
capabilities: raid msi pm bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:126 memory:943a0000-943a7fff memory:943b4000-943b40ff ioport:5080(size=8) ioport:5088(size=4) ioport:5060(size=32) memory:94300000-9437ffff
*-pci:0
description: PCI bridge
product: Sunrise Point-LP PCI Express Root Port #1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: f1
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:122 ioport:4000(size=4096) memory:93000000-93ffffff ioport:80000000(size=301989888)
*-display
description: 3D controller
product: GP108M [GeForce MX150]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=nvidia latency=0
resources: irq:138 memory:93000000-93ffffff memory:80000000-8fffffff memory:90000000-91ffffff ioport:4000(size=128)
*-pci:1
description: PCI bridge
product: Sunrise Point-LP PCI Express Root Port #5
vendor: Intel Corporation
physical id: 1c.4
bus info: pci@0000:00:1c.4
version: f1
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:123 ioport:3000(size=4096) memory:94200000-942fffff
*-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: 10
serial: 54:e1:ad:e0:36:62
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-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.8.0-50-generic firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII
resources: irq:16 ioport:3000(size=256) memory:94204000-94204fff memory:94200000-94203fff
*-pci:2
description: PCI bridge
product: Sunrise Point-LP PCI Express Root Port #6
vendor: Intel Corporation
physical id: 1c.5
bus info: pci@0000:00:1c.5
version: f1
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:124 memory:94000000-941fffff
*-network
description: Wireless interface
product: QCA9377 802.11ac Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 31
serial: e8:2a:44:e6:9a:39
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath10k_pci driverversion=5.8.0-50-generic firmware=WLAN.TF.2.1-00021-QCARMSWP-1 ip=192.168.4.28 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:136 memory:94000000-941fffff
*-isa
description: ISA bridge
product: Sunrise Point LPC Controller/eSPI Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 21
width: 32 bits
clock: 33MHz
capabilities: isa bus_master
configuration: latency=0
*-memory UNCLAIMED
description: Memory controller
product: Sunrise Point-LP PMC
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 21
width: 32 bits
clock: 33MHz (30.3ns)
capabilities: bus_master
configuration: latency=0
resources: memory:943ac000-943affff
*-multimedia
description: Audio device
product: Sunrise Point-LP HD Audio
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 21
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=snd_hda_intel latency=32
resources: irq:137 memory:943a8000-943abfff memory:94380000-9438ffff
*-serial
description: SMBus
product: Sunrise Point-LP SMBus
vendor: Intel Corporation
physical id: 1f.4
bus info: pci@0000:00:1f.4
version: 21
width: 64 bits
clock: 33MHz
configuration: driver=i801_smbus latency=0
resources: irq:16 memory:943b3000-943b30ff ioport:5040(size=32)
*-pnp00:00
product: PnP device PNP0c02
physical id: 1
capabilities: pnp
configuration: driver=system
*-pnp00:01
product: PnP device PNP0c02
physical id: 2
capabilities: pnp
configuration: driver=system
*-pnp00:02
product: PnP device PNP0c02
physical id: 3
capabilities: pnp
configuration: driver=system
*-pnp00:03
product: PnP device PNP0b00
physical id: 5
capabilities: pnp
configuration: driver=rtc_cmos
*-pnp00:04
product: PnP device INT3f0d
physical id: 6
capabilities: pnp
configuration: driver=system
*-pnp00:05
product: PnP device PNP0303
physical id: 7
capabilities: pnp
configuration: driver=i8042 kbd
*-pnp00:06
product: PnP device PNP0c02
physical id: 8
capabilities: pnp
configuration: driver=system
*-pnp00:07
product: PnP device PNP0c02
physical id: 9
capabilities: pnp
configuration: driver=system
*-scsi:0
physical id: a
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: WDC WDS100T2B0A
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 40WD
serial: 200390460303
size: 931GiB (1TB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=95a108d3-be4f-49ae-af08-060d2a4677ca logicalsectorsize=512 sectorsize=512
*-volume:0 UNCLAIMED
description: Windows FAT volume
vendor: MSDOS5.0
physical id: 1
bus info: scsi@0:0.0.0,1
version: FAT32
serial: 764b-302a
size: 255MiB
capacity: 259MiB
capabilities: boot fat initialized
configuration: FATs=2 filesystem=fat label=SYSTEM_DRV name=EFI system partition
*-volume:1
description: reserved partition
vendor: Windows
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
serial: 60982d8b-b3de-483b-be82-d434f773ca5e
capacity: 15MiB
capabilities: nofs
configuration: name=Microsoft reserved partition
*-volume:2
description: Windows NTFS volume
vendor: Windows
physical id: 3
bus info: scsi@0:0.0.0,3
logical name: /dev/sda3
version: 3.1
serial: f4f285b4-b46d-2c4a-b8d6-5b66893347b0
size: 487GiB
capacity: 487GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2017-12-08 19:18:14 filesystem=ntfs label=Windows name=Basic data partition state=clean
*-volume:3
description: Windows NTFS volume
vendor: Windows
physical id: 4
bus info: scsi@0:0.0.0,4
logical name: /dev/sda4
version: 3.1
serial: 2a7c253a-2f9a-0844-811c-8ca90d1567c7
size: 24GiB
capacity: 24GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2017-12-08 19:26:44 filesystem=ntfs label=LENOVO name=Basic data partition state=clean
*-volume:4
description: Windows NTFS volume
vendor: Windows
physical id: 5
bus info: scsi@0:0.0.0,5
logical name: /dev/sda5
version: 3.1
serial: c05712cb-b1d9-f84a-95a1-04f5a8f44527
size: 994MiB
capacity: 999MiB
capabilities: boot precious ntfs initialized
configuration: clustersize=4096 created=2017-12-08 19:18:20 filesystem=ntfs label=WINRE_DRV name=Basic data partition state=clean
*-volume:5
description: EXT4 volume
vendor: Linux
physical id: 6
bus info: scsi@0:0.0.0,6
logical name: /dev/sda6
logical name: /
version: 1.0
serial: 9203813c-1be8-47fd-8877-f44addb8076e
size: 417GiB
capacity: 417GiB
capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
configuration: created=2020-04-27 11:13:43 filesystem=ext4 lastmountpoint=/ modified=2021-04-22 09:41:20 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro mounted=2021-04-22 09:41:20 state=mounted
*-scsi:1
physical id: b
logical name: scsi1
capabilities: emulated
*-cdrom
description: DVD writer
product: DVD-RW DA8AESH
vendor: PLDS
physical id: 0.0.0
bus info: scsi@1:0.0.0
logical name: /dev/cdrom
logical name: /dev/cdrw
logical name: /dev/dvd
logical name: /dev/dvdrw
logical name: /dev/sr0
version: XL6M
capabilities: removable audio cd-r cd-rw dvd dvd-r
configuration: ansiversion=5 status=nodisc
*-battery
description: Zinc-Air Battery
product: CRB Battery 0
vendor: -Virtual Battery 0-
physical id: 1
version: 08/08/2010
serial: Battery 0
slot: Fake
*-power UNCLAIMED
description: OEM Define 1
product: OEM Define 5
vendor: OEM Define 2
physical id: 2
version: OEM Define 6
serial: OEM Define 3
capacity: 75mWh