请参考
Ubuntu 18 作为 - Ubuntu 18.04.5 LTS
Ubuntu 20.04 LTS
联想 y700 上的 Ubuntu 20（https://www.lenovo.com/us/en/laptops/ideapad/ideapad-y700-series/Ideapad-Y700-15/p/88IPY700618) 无法提供像 Ubnutu 18 那样的以太网性能。
Ubuntu 20 的 LAN 驱动程序的性能不如 Ubuntu 18。
1gbps 连接在 Ubuntu 18 上提供 940 mbps 的下载速度，而在 Ubuntu 20 上则提供 <500 mbps 的下载速度。
通知的主要原因：Ubuntu 20 可用于在云中托管互联网应用程序，并且不希望由于以太网驱动程序的限制而导致服务器性能变慢。肯定有很多因素，与 Ubuntu 20 的桌面版本相比，服务器版本可能完全没问题。
这是最大的缺点，让我只能使用 Ubuntu 18。Wifi 驱动程序很好，我了解 wifi 硬件接收器的限制，可能在 500 mbps 左右。我没有遇到任何 wifi 驱动程序问题，就像我在互联网上看到的其他问题一样。
总是混淆使用 Ubuntu 18 或 20 作为：
Ubuntu 18 使用 NVIDIA 时总是出现风扇开启的问题
对比
Ubuntu 20 存在以太网驱动程序性能问题，这限制了互联网速度并且性能比 Ubuntu 18 慢。
Output of commands on my Ubuntu 18
ru@ru-Lenovo-ideapad-Y700-15ISK:~$ lspci -nnk | grep 0200 -A3
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:3831]
Kernel driver in use: r8169
Kernel modules: r8169
ru@ru-Lenovo-ideapad-Y700-15ISK:~$ uname -r
4.15.0-123-generic
ru@ru-Lenovo-ideapad-Y700-15ISK:~$ sudo lshw
[sudo] password for ru:
ru-lenovo-ideapad-y700-15isk
description: Notebook
product: 80NV (LENOVO_MT_80NV_BU_idea_FM_Lenovo ideapad Y700-15ISK)
vendor: LENOVO
version: Lenovo ideapad Y700-15ISK
serial: PF0EP47D
width: 64 bits
capabilities: smbios-2.8 dmi-2.8 smp vsyscall32
configuration: administrator_password=disabled chassis=notebook family=IDEAPAD frontpanel_password=disabled keyboard_password=disabled power-on_password=disabled sku=LENOVO_MT_80NV_BU_idea_FM_Lenovo ideapad Y700-15ISK uuid=2267789A-787F-E511-BA4C-507B9D5E070B
*-core
description: Motherboard
product: Allsparks 5A
vendor: LENOVO
physical id: 0
version: SDK0J40709 WIN
serial: PF0EP47D
slot: Type2 - Board Chassis Location
*-firmware
description: BIOS
vendor: LENOVO
physical id: 0
version: CDCN54WW
date: 06/13/2017
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) i7-6700HQ CPU @ 2.60GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
serial: To Be Filled By O.E.M.
slot: U3E1
size: 3445MHz
capacity: 3500MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 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 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 epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm 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: 6
slot: L1 Cache
size: 128KiB
capacity: 128KiB
capabilities: synchronous internal write-back instruction
configuration: level=1
*-cache:1
description: L2 cache
physical id: 7
slot: L2 Cache
size: 1MiB
capacity: 1MiB
capabilities: synchronous internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 8
slot: L3 Cache
size: 6MiB
capacity: 6MiB
capabilities: synchronous internal write-back unified
configuration: level=3
*-cache
description: L1 cache
physical id: 5
slot: L1 Cache
size: 128KiB
capacity: 128KiB
capabilities: synchronous internal write-back data
configuration: level=1
*-memory
description: System Memory
physical id: 1c
slot: System board or motherboard
size: 16GiB
*-bank:0
description: SODIMM DDR4 Synchronous 2133 MHz (0.5 ns)
product: M471A1G43DB0-CPB
vendor: Samsung
physical id: 0
serial: 15191694
slot: ChannelA-DIMM0
size: 8GiB
width: 64 bits
clock: 2133MHz (0.5ns)
*-bank:1
description: [empty]
physical id: 1
slot: ChannelA-DIMM1
*-bank:2
description: SODIMM DDR4 Synchronous 2133 MHz (0.5 ns)
product: M471A1G43DB0-CPB
vendor: Samsung
physical id: 2
serial: 15191695
slot: ChannelB-DIMM0
size: 8GiB
width: 64 bits
clock: 2133MHz (0.5ns)
*-bank:3
description: [empty]
physical id: 3
slot: ChannelB-DIMM1
*-pci
description: Host bridge
product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 07
width: 32 bits
clock: 33MHz
configuration: driver=skl_uncore
resources: irq:0
*-pci:0
description: PCI bridge
product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16)
vendor: Intel Corporation
physical id: 1
bus info: pci@0000:00:01.0
version: 07
width: 32 bits
clock: 33MHz
capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:122 ioport:4000(size=4096) memory:93000000-93ffffff ioport:80000000(size=301989888)
*-display UNCLAIMED
description: 3D controller
product: GM107M [GeForce GTX 960M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a2
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:93000000-93ffffff memory:80000000-8fffffff memory:90000000-91ffffff ioport:4000(size=128)
*-display
description: VGA compatible controller
product: HD Graphics 530
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 06
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:130 memory:92000000-92ffffff memory:a0000000-afffffff ioport:5000(size=64) memory:c0000-dffff
*-usb
description: USB controller
product: 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 31
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci bus_master cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:126 memory:94300000-9430ffff
*-usbhost:0
product: xHCI Host Controller
vendor: Linux 4.15.0-123-generic xhci-hcd
physical id: 0
bus info: usb@1
logical name: usb1
version: 4.15
capabilities: usb-2.00
configuration: driver=hub slots=16 speed=480Mbit/s
*-usb:0
description: Keyboard
product: CORSAIR K70 RGB MK.2 LOW PROFILE Mechanical Gaming Keyboard
vendor: Corsair
physical id: 1
bus info: usb@1:1
version: 3.24
serial: 05008027AF081CE75891B270F5001BC4
capabilities: usb-2.00
configuration: driver=usbhid maxpower=500mA speed=12Mbit/s
*-usb:1
description: Mouse
product: Microsoft USB Optical Mouse
vendor: PixArt
physical id: 3
bus info: usb@1:3
version: 1.00
capabilities: usb-1.10
configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
*-usb:2
description: Video
product: Lenovo EasyCamera
vendor: NXP (Philips Semi, Signetics)
physical id: 6
bus info: usb@1:6
version: 12.18
serial: 200901010001
capabilities: usb-2.00
configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
*-usb:3
description: Bluetooth wireless interface
vendor: Intel Corp.
physical id: b
bus info: usb@1:b
version: 0.01
capabilities: bluetooth usb-2.00
configuration: driver=btusb maxpower=100mA speed=12Mbit/s
*-usbhost:1
product: xHCI Host Controller
vendor: Linux 4.15.0-123-generic xhci-hcd
physical id: 1
bus info: usb@2
logical name: usb2
version: 4.15
capabilities: usb-3.00
configuration: driver=hub slots=8 speed=5000Mbit/s
*-usb
description: Mass storage device
product: Ultra Fit
vendor: SanDisk
physical id: 1
bus info: usb@2:1
logical name: scsi4
version: 1.00
serial: 0401afd9c38eabbedc76169110d5bda8b99e8fdf27e7dbbd02cb83c458d915c63226000000000000
capabilities: usb-3.00 scsi emulated scsi-host
configuration: driver=usb-storage maxpower=896mA speed=5000Mbit/s
*-disk
description: SCSI Disk
product: Ultra Fit
vendor: SanDisk
physical id: 0.0.0
bus info: scsi@4:0.0.0
logical name: /dev/sdc
version: 1.00
serial: 0401afd9c38eabbedc76
size: 28GiB (30GB)
capabilities: removable
configuration: ansiversion=6 logicalsectorsize=512 sectorsize=512
*-medium
physical id: 0
logical name: /dev/sdc
size: 28GiB (30GB)
capabilities: partitioned partitioned:dos
configuration: signature=15f006ae
*-volume:0
description: Windows FAT volume
vendor: mkfs.fat
physical id: 2
logical name: /dev/sdc2
version: FAT12
serial: 1ac3-20ed
size: 15EiB
capabilities: primary boot fat initialized
configuration: FATs=2 filesystem=fat
*-volume:1
description: EXT4 volume
vendor: Linux
physical id: 3
logical name: /dev/sdc3
logical name: /media/ru/writable
version: 1.0
serial: a394eff0-cf97-445c-bc33-b700cccfd261
size: 26GiB
capacity: 26GiB
capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
configuration: created=2020-07-12 17:26:01 filesystem=ext4 label=writable lastmountpoint=/root/var/crash modified=2020-11-21 18:48:22 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime,data=ordered mounted=2020-11-21 18:48:22 state=mounted
*-communication
description: Communication controller
product: 100 Series/C230 Series Chipset Family MEI Controller #1
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 31
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei_me latency=0
resources: irq:129 memory:9432a000-9432afff
*-storage
description: SATA controller
product: HM170/QM170 Chipset SATA Controller [AHCI Mode]
vendor: Intel Corporation
physical id: 17
bus info: pci@0000:00:17.0
version: 31
width: 32 bits
clock: 66MHz
capabilities: storage msi pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:127 memory:94328000-94329fff memory:9432d000-9432d0ff ioport:5080(size=8) ioport:5088(size=4) ioport:5060(size=32) memory:9432b000-9432b7ff
*-pci:1
description: PCI bridge
product: 100 Series/C230 Series Chipset Family PCI Express Root Port #2
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:123 memory:94200000-942fffff
*-generic
description: SD Host controller
product: SD/MMC Card Reader Controller
vendor: O2 Micro, Inc.
physical id: 0
bus info: pci@0000:07:00.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=sdhci-pci latency=0
resources: irq:17 memory:94201000-94201fff memory:94200000-942007ff
*-pci:2
description: PCI bridge
product: 100 Series/C230 Series Chipset Family PCI Express Root Port #3
vendor: Intel Corporation
physical id: 1c.2
bus info: pci@0000:00:1c.2
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:94100000-941fffff
*-network DISABLED
description: Wireless interface
product: Wireless 8260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:08:00.0
logical name: wlp8s0
version: 3a
serial: a4:34:d9:32:b0:fe
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-123-generic firmware=34.0.1 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:131 memory:94100000-94101fff
*-pci:3
description: PCI bridge
product: 100 Series/C230 Series Chipset Family PCI Express Root Port #4
vendor: Intel Corporation
physical id: 1c.3
bus info: pci@0000:00:1c.3
version: f1
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:125 ioport:3000(size=4096) memory:94000000-940fffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:09:00.0
logical name: enp9s0
version: 15
serial: 50:7b:9d:5e:07:0b
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix 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=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.1.182 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
resources: irq:19 ioport:3000(size=256) memory:94004000-94004fff memory:94000000-94003fff
*-isa
description: ISA bridge
product: HM170 Chipset LPC/eSPI Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 31
width: 32 bits
clock: 33MHz
capabilities: isa bus_master
configuration: latency=0
*-memory UNCLAIMED
description: Memory controller
product: 100 Series/C230 Series Chipset Family Power Management Controller
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 31
width: 32 bits
clock: 33MHz (30.3ns)
capabilities: bus_master
configuration: latency=0
resources: memory:94324000-94327fff
*-multimedia
description: Audio device
product: 100 Series/C230 Series Chipset Family HD Audio Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 31
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=snd_hda_intel latency=32
resources: irq:132 memory:94320000-94323fff memory:94310000-9431ffff
*-serial UNCLAIMED
description: SMBus
product: 100 Series/C230 Series Chipset Family SMBus
vendor: Intel Corporation
physical id: 1f.4
bus info: pci@0000:00:1f.4
version: 31
width: 64 bits
clock: 33MHz
configuration: latency=0
resources: memory:9432c000-9432c0ff ioport:5040(size=32)
*-scsi:0
physical id: 1
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: SAMSUNG MZNLN128
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 3L0Q
serial: S22XNXAGA02179
size: 119GiB (128GB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=26265439-517d-473c-b88f-2b5898fcb37a logicalsectorsize=512 sectorsize=512
*-volume:0
description: Windows FAT volume
vendor: mkfs.fat
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
version: FAT32
serial: fba5-9004
size: 1022MiB
capacity: 1023MiB
capabilities: boot fat initialized
configuration: FATs=2 filesystem=fat name=Basic data partition
*-volume:1
description: EXT4 volume
vendor: Linux
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
logical name: /home
version: 1.0
serial: 515346ee-deac-4a80-b610-6faa3158f22f
size: 34GiB
capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
configuration: created=2020-09-16 20:41:22 filesystem=ext4 lastmountpoint=/home modified=2020-11-21 18:32:13 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2020-11-21 18:32:13 state=mounted
*-volume:2
description: EXT4 volume
vendor: Linux
physical id: 3
bus info: scsi@0:0.0.0,3
logical name: /dev/sda3
logical name: /home2
version: 1.0
serial: 096eae9a-a098-4864-810f-cfc27898906b
size: 30GiB
capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
configuration: created=2020-10-04 10:16:34 filesystem=ext4 label=home2 lastmountpoint=/home2 modified=2020-11-21 18:32:13 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2020-11-21 18:32:13 state=mounted
*-volume:3
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: 1bc3863d-45c9-43aa-8818-34083956d624
size: 53GiB
capacity: 53GiB
capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
configuration: created=2020-09-19 16:18:10 filesystem=ext4 lastmountpoint=/ modified=2020-11-21 18:32:11 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered mounted=2020-11-21 18:32:11 state=mounted
*-scsi:1
physical id: 2
logical name: scsi2
capabilities: emulated
*-disk
description: ATA Disk
product: WDC WD10SPCX-24H
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@2:0.0.0
logical name: /dev/sdb
version: 1A02
serial: WD-WX11A957RXTP
size: 931GiB (1TB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=3848de97-9627-4822-9637-8ba83a3aad11 logicalsectorsize=512 sectorsize=4096
*-volume:0
description: Windows NTFS volume
vendor: Windows
physical id: 1
bus info: scsi@2:0.0.0,1
logical name: /dev/sdb1
logical name: /mnt/storage
version: 3.1
serial: d2169a7f-681f-2442-a1a6-c9e5b8a8c5e8
size: 799GiB
capacity: 799GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2015-11-10 05:25:56 filesystem=ntfs label=STORAGE mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096 name=Basic data partition state=mounted
*-volume:1
description: Windows NTFS volume
vendor: Windows
physical id: 2
bus info: scsi@2:0.0.0,2
logical name: /dev/sdb2
logical name: /mnt/sh
version: 3.1
serial: a6895502-92c1-684d-bdc8-84658bc79493
size: 86GiB
capacity: 86GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2010-05-03 22:24:57 filesystem=ntfs label=SH mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096 state=mounted
*-volume:2
description: Windows NTFS volume
vendor: Windows
physical id: 3
bus info: scsi@2:0.0.0,3
logical name: /dev/sdb3
logical name: /mnt/exe
version: 3.1
serial: d8374315-36a4-2347-811a-2a5bd1f22f47
size: 14GiB
capacity: 14GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2018-12-22 03:34:26 filesystem=ntfs label=EXE modified_by_chkdsk=true mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096 mounted_on_nt4=true resize_log_file=true state=mounted upgrade_on_mount=true
*-volume:3
description: Linux swap volume
vendor: Linux
physical id: 4
bus info: scsi@2:0.0.0,4
logical name: /dev/sdb4
version: 1
serial: acbf1615-d7b6-4996-9832-91844cd93640
size: 30GiB
capacity: 30GiB
capabilities: nofs swap initialized
configuration: filesystem=swap label=swap pagesize=4095