这是我的第一次问答，所以我希望能够清楚。
当我用手机检查互联网连接速度时，显示下载速度为 30MB，而当我用 ubuntu 系统执行此操作时，显示下载速度为 1.5-6MB...
有人能帮帮我吗？我确信那是驱动程序的问题，但我搞不清楚。
这output of lsusb：
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 009 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 2357:0107
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 0461:4e22 Primax Electronics, Ltd
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
输出sudo lshw -C network：
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 03
serial: 6c:f0:49:76:12:6b
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom 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=rtl_nic/rtl8168d-2.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:17 ioport:de00(size=256) memory:fbeff000-fbefffff memory:fbef8000-fbefbfff memory:fbb00000-fbb1ffff
*-network
description: Wireless interface
physical id: 1
bus info: usb@1:3
logical name: wlx503eaa9c1c6c
serial: 50:3e:aa:9c:1c:6c
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=rtl8xxxu driverversion=4.15.0-70-generic firmware=N/A ip=192.168.1.5 link=yes multicast=yes wireless=IEEE 802.11
输出lsmod | grep rtl：
rtl8xxxu 122880 0
mac80211 786432 1 rtl8xxxu
这outpot of iwconfig：
lo no wireless extensions.
wlx503eaa9c1c6c IEEE 802.11 ESSID:"L***t."
Mode:Managed Frequency:2.412 GHz Access Point: E4:6F:13:72:99:52
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=16/70 Signal level=-94 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:206 Missed beacon:0
enp3s0 no wireless extensions.
输出dkms status：
nvidia-340, 340.107, 4.15.0-70-generic, x86_64: installed
oem-audio-hda-daily, 0.201905191531~ubuntu18.04.1, 4.15.0-69-generic, x86_64: installed
oem-audio-hda-daily, 0.201905191531~ubuntu18.04.1, 4.15.0-70-generic, x86_64: installed
virtualbox, 5.2.34, 4.15.0-70-generic, x86_64: installed
我希望有人能帮助我提高下载速度。
谢谢。