Bonjour,
Avec un portable Lenovo ideapad 330-17AST0 en dual-boot Win10 et Xubuntu 18.04.1 que je viens d'installer,
je n'ai pas de Wi-fi avec Xubuntu.
Ci-dessous le wificheck rassemblant les informations
>> cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
>> lsusb
Bus 001 Device 005: ID 174f:116a Syntek
Bus 001 Device 004: ID 0bda:c024 Realtek Semiconductor Corp.
Bus 001 Device 003: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> lspci -k -nn | grep -A 3 -i net
01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
Subsystem: Lenovo RTL8821CE 802.11ac PCIe Wireless Network Adapter [17aa:c024]
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
Subsystem: Lenovo RTL810xE PCI Express Fast Ethernet controller [17aa:3861]
Kernel driver in use: r8169
Kernel modules: r8169
>> sudo lshw -C network
*-network NON-RÉCLAMÉ
description: Network controller
produit: Realtek Semiconductor Co., Ltd.
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:01:00.0
version: 00
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress cap_list
configuration: latency=0
ressources: portE/S:2000(taille=256) mémoire:f0c00000-f0c0ffff
*-network
description: Ethernet interface
produit: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: enp2s0
version: 07
numéro de série: e8:6a:64:19:3a:b3
taille: 100Mbit/s
capacité: 100Mbit/s
bits: 64 bits
horloge: 33MHz
fonctionnalités: 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=full firmware=rtl8106e-1_0.0.1 06/29/12 ip=192.168.1.32 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
ressources: irq:33 portE/S:1000(taille=256) mémoire:f0b00000-f0b00fff mémoire:f0800000-f0803fff
>> lsmod
Module Size Used by
cpuid 16384 0
nls_iso8859_1 16384 1
ufs 77824 0
qnx4 16384 0
hfsplus 106496 0
hfs 57344 0
minix 32768 0
ntfs 102400 0
msdos 20480 0
xfs 1200128 0
libcrc32c 16384 1 xfs
jfs 188416 0
btrfs 1130496 0
zstd_compress 163840 1 btrfs
xor 24576 1 btrfs
raid6_pq 114688 1 btrfs
cmac 16384 1
rfcomm 77824 16
edac_mce_amd 28672 0
bnep 20480 2
kvm 598016 0
irqbypass 16384 1 kvm
crct10dif_pclmul 16384 0
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
pcbc 16384 0
snd_hda_codec_hdmi 49152 1
snd_hda_codec_generic 73728 1
aesni_intel 188416 2
snd_hda_intel 40960 4
uvcvideo 86016 0
snd_hda_codec 126976 3 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel
snd_hda_core 81920 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
aes_x86_64 20480 1 aesni_intel
crypto_simd 16384 1 aesni_intel
glue_helper 16384 1 aesni_intel
cryptd 24576 3 crypto_simd,ghash_clmulni_intel,aesni_intel
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 98304 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
wmi_bmof 16384 0
btusb 45056 0
input_leds 16384 0
serio_raw 16384 0
btrtl 16384 1 btusb
btbcm 16384 1 btusb
btintel 16384 1 btusb
bluetooth 548864 43 btrtl,btintel,btbcm,bnep,btusb,rfcomm
fam15h_power 16384 0
joydev 24576 0
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_rawmidi 32768 1 snd_seq_midi
ideapad_laptop 32768 0
ecdh_generic 24576 2 bluetooth
snd_seq 65536 2 snd_seq_midi,snd_seq_midi_event
sparse_keymap 16384 1 ideapad_laptop
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
snd_timer 32768 2 snd_seq,snd_pcm
snd 81920 18 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_timer,snd_pcm,snd_rawmidi
shpchp 36864 0
mac_hid 16384 0
soundcore 16384 1 snd
sch_fq_codel 20480 2
parport_pc 36864 0
ppdev 20480 0
lp 20480 0
parport 49152 3 parport_pc,lp,ppdev
ip_tables 28672 0
x_tables 40960 1 ip_tables
autofs4 40960 2
overlay 77824 1
nls_utf8 16384 1
isofs 45056 1
dm_mirror 24576 0
dm_region_hash 20480 1 dm_mirror
dm_log 20480 2 dm_region_hash,dm_mirror
hid_generic 16384 0
usbhid 49152 0
hid_rmi 20480 0
rmi_core 77824 1 hid_rmi
videobuf2_vmalloc 16384 2 rmi_core,uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 24576 2 rmi_core,uvcvideo
videobuf2_core 40960 3 rmi_core,videobuf2_v4l2,uvcvideo
videodev 184320 4 videobuf2_core,rmi_core,videobuf2_v4l2,uvcvideo
media 40960 2 videodev,uvcvideo
amdkfd 180224 1
amd_iommu_v2 20480 1 amdkfd
uas 24576 0
ahci 36864 4
i2c_piix4 24576 0
usb_storage 69632 2 uas
libahci 32768 1 ahci
r8169 86016 0
mii 16384 1 r8169
amdgpu 2703360 8
video 45056 1 ideapad_laptop
i2c_hid 20480 0
wmi 24576 2 wmi_bmof,ideapad_laptop
chash 16384 1 amdgpu
i2c_algo_bit 16384 1 amdgpu
ttm 106496 1 amdgpu
hid 118784 4 i2c_hid,usbhid,hid_generic,hid_rmi
drm_kms_helper 172032 1 amdgpu
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
drm 401408 10 drm_kms_helper,amdgpu,ttm
>> iwconfig
>> ifconfig -a
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.32 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::181b:dec9:305d:5f20 prefixlen 64 scopeid 0x20<link>
ether e8:6a:64:19:3a:b3 txqueuelen 1000 (Ethernet)
RX packets 270085 bytes 405413358 (405.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 149990 bytes 10815718 (10.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Boucle locale)
RX packets 512 bytes 42854 (42.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 512 bytes 42854 (42.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>> sudo iwlist scan
>> uname -r -m
4.15.0-38-generic x86_64
>> cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
>> nm-tool
>> nmcli dev wifi
>> nmcli connection list (< 15.04) ou nmcli connection show (>= 15.04)
NAME UUID TYPE DEVICE
Connexion filaire 1 63af9603-c326-3b0c-a4f6-785a76204883 ethernet enp2s0
>> nmcli connection status
>> sudo rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no