ورژن 17.4 رو نصب کردم همین مشکلو داشتم
elliot@elliot:~$ sudo sed -i "s/3/2/g" /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[sudo] password for elliot:
elliot@elliot:~$ sudo lshw -class network
*-network
description: Wireless interface
product: RTL8821AE 802.11ac PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 00
serial: 30:f7:72:0a:d2:05
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8821ae driverversion=4.10.0-19-generic firmware=N/A ip=192.168.1.102 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:45 ioport:2000(size=256) memory:f0c00000-f0c03fff
*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 07
serial: 50:7b:9d:f1:60:c7
size: 10Mbit/s
capacity: 100Mbit/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 autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:37 ioport:1000(size=256) memory:f0b00000-f0b00fff memory:f0800000-f0803fff
elliot@elliot:~$ iwconfig
lo no wireless extensions.
wlp2s0 IEEE 802.11 ESSID:"elliot"
Mode:Managed Frequency:2.412 GHz Access Point: 84:16:F9:E9:36:7F
Bit Rate=150 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=48/70 Signal level=-62 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:2 Missed beacon:0
enp3s0 no wireless extensions
.