Probléme Wi-Fi

Bonjour,
je suis nouveau sur Linux je viens d'installer Ubuntu seulement lorsque j'essaye de me connecter a internet via le Wifi de mon ordinateur on me redemande la clé Wifi en boucle.
J'arrive a me connecter via un câble Ethernet mais ça reste handicapant.

lorsque je tape

cat /proc/version ça renvoie :

Linux version 4.4.0-62-generic (buildd@lcy01-30) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4) ) #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017


lorsque c'est iw config :
lo no wireless extensions.

enp3s0 no wireless extensions.

wlp2s0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off

et avec lsmod :

Module Size Used by
nls_utf8 16384 1
isofs 40960 1
nls_iso8859_1 16384 1
acer_wmi 20480 0
sparse_keymap 16384 1 acer_wmi
arc4 16384 2
uvcvideo 90112 0
rtl8192ce 57344 0
rtl_pci 28672 1 rtl8192ce
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
rtl8192c_common 53248 1 rtl8192ce
videobuf2_v4l2 28672 1 uvcvideo
snd_hda_codec_hdmi 53248 1
rtlwifi 77824 3 rtl_pci,rtl8192c_common,rtl8192ce
mac80211 737280 3 rtl_pci,rtlwifi,rtl8192ce
snd_hda_codec_realtek 86016 1
snd_hda_codec_generic 77824 1 snd_hda_codec_realtek
cfg80211 565248 2 mac80211,rtlwifi
snd_hda_intel 40960 5
videobuf2_core 36864 2 uvcvideo,videobuf2_v4l2
snd_hda_codec 135168 4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
v4l2_common 16384 1 videobuf2_v4l2
intel_powerclamp 16384 0
videodev 176128 4 uvcvideo,v4l2_common,videobuf2_core,videobuf2_v4l2
coretemp 16384 0
media 24576 2 uvcvideo,videodev
snd_hda_core 73728 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
input_leds 16384 0
snd_hwdep 16384 1 snd_hda_codec
joydev 20480 0
serio_raw 16384 0
snd_pcm 106496 5 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_rawmidi 32768 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 32768 2 snd_pcm,snd_seq
snd 81920 20 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
lpc_ich 24576 0
soundcore 16384 1 snd
mei_me 36864 0
shpchp 36864 0
mei 98304 1 mei_me
mac_hid 16384 0
parport_pc 32768 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,ppdev,parport_pc
autofs4 40960 2
ums_realtek 20480 0
uas 24576 0
usb_storage 69632 3 uas,ums_realtek
i915 1208320 3
psmouse 131072 0
i2c_algo_bit 16384 1 i915
drm_kms_helper 155648 1 i915
syscopyarea 16384 1 drm_kms_helper
intel_ips 20480 0
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
atl1c 49152 0
fb_sys_fops 16384 1 drm_kms_helper
ahci 36864 3
drm 364544 5 i915,drm_kms_helper
libahci 32768 1 ahci
video 40960 2 i915,acer_wmi
fjes 28672 0
wmi 20480 1 acer_wmi

merci d'avance pour votre aide