Wifi instable

Bonjour
J’ai mis a jour mon pc sur debian stable

Depuis le wifi marche très mal
Possible de se connecter mais chargement des page très lent
dans kde la liste des réseaux wifi “clignote” comme si un scanne sur 2 donnais 0 résultat

quand je suis connecté
si je fait

watch -n 0.1 sudo iwconfig

ca change entre

wlp3s0    IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on

et

wlp3s0    IEEE 802.11  ESSID:"***********"  
          Mode:Managed  Frequency:2.472 GHz  Access Point: AC:9E:17:EB:2F:48   
          Bit Rate=1 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=56/70  Signal level=-54 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Et pour

watch -n 0.1 sudo ifconfig
wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.11  netmask 255.255.255.0  broadcast 192.168.1.255
        ether 10:02:b5:57:51:4d  txqueuelen 1000  (Ethernet)
        RX packets 835  bytes 183379 (179.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1041  bytes 140736 (137.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

et

wlp3s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.1.11  netmask 255.255.255.0  broadcast 192.168.1.255
        ether 10:02:b5:57:51:4d  txqueuelen 1000  (Ethernet)
        RX packets 916  bytes 201677 (196.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1132  bytes 151619 (148.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
service network manager stop

ne réglé pas le problème

J’ai vérifié connman et wicd ne sont pas installé

désactiver le bluetooth ne règle pas le problème non plus

lcpci
00:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 07)
00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 07)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 07)
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #1 (rev 31)
00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] (rev 31)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #2 (rev f1)
00:1c.2 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #3 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)
02:00.0 Unassigned class [ff00]: Alcor Micro Device 6621
**03:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59)**
3d:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller (rev 01)

J’ai bien le firmware de la carte wifi

dmesg
[ 3003.870661] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3003.880597] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3005.996707] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3006.000427] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3006.042863] wlp3s0: authenticate with ac:9e:17:eb:2f:48
[ 3006.047339] wlp3s0: send auth to ac:9e:17:eb:2f:48 (try 1/3)
[ 3006.052118] wlp3s0: authenticated
[ 3006.052671] wlp3s0: associate with ac:9e:17:eb:2f:48 (try 1/3)
[ 3006.055578] wlp3s0: RX AssocResp from ac:9e:17:eb:2f:48 (capab=0x11 status=0 aid=11)
[ 3006.057533] wlp3s0: associated
[ 3006.057559] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready
[ 3008.096270] wlp3s0: deauthenticating from ac:9e:17:eb:2f:48 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 3008.127939] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3008.134315] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3008.136178] wlp3s0: authenticate with ac:9e:17:eb:2f:48
[ 3008.140353] wlp3s0: send auth to ac:9e:17:eb:2f:48 (try 1/3)
[ 3008.143600] wlp3s0: authenticated
[ 3008.144675] wlp3s0: associate with ac:9e:17:eb:2f:48 (try 1/3)
[ 3008.147548] wlp3s0: RX AssocResp from ac:9e:17:eb:2f:48 (capab=0x11 status=0 aid=11)
[ 3008.149428] wlp3s0: associated
journalctl -fu NetworkManager
août 24 14:26:07 portable-simon dhclient[21543]: receive_packet failed on wlp3s0: Network is down
août 24 14:26:07 portable-simon dhclient[21543]: receive_packet failed on wlp3s0: Network is down
août 24 14:26:07 portable-simon NetworkManager[607]: <info>  [1566649567.8577] device (wlp3s0): supplicant interface state: scanning -> disconnected
août 24 14:26:07 portable-simon NetworkManager[607]: <info>  [1566649567.8658] device (wlp3s0): supplicant interface state: disconnected -> authenticating
août 24 14:26:07 portable-simon NetworkManager[607]: <info>  [1566649567.8752] device (wlp3s0): supplicant interface state: authenticating -> associating
août 24 14:26:07 portable-simon NetworkManager[607]: <info>  [1566649567.8864] device (wlp3s0): supplicant interface state: associating -> 4-way handshake
août 24 14:26:07 portable-simon NetworkManager[607]: <info>  [1566649567.9212] device (wlp3s0): supplicant interface state: 4-way handshake -> completed
août 24 14:26:08 portable-simon NetworkManager[607]: <warn>  [1566649568.1694] ndisc[0x5583f8ab5320,"wlp3s0"]: failure sending router solicitation: Ne peut attribuer l'adresse demandée (99)
août 24 14:26:10 portable-simon dhclient[21543]: receive_packet failed on wlp3s0: Network is down
août 24 14:26:10 portable-simon NetworkManager[607]: <warn>  [1566649570.1315] sup-iface[0x5583f897a0e0,wlp3s0]: connection disconnected (reason -3)
août 24 14:26:10 portable-simon dhclient[21543]: receive_packet failed on wlp3s0: Network is down
août 24 14:26:10 portable-simon NetworkManager[607]: <info>  [1566649570.1517] device (wlp3s0): supplicant interface state: completed -> disconnected
août 24 14:26:10 portable-simon NetworkManager[607]: <info>  [1566649570.1590] device (wlp3s0): supplicant interface state: disconnected -> authenticating
août 24 14:26:10 portable-simon NetworkManager[607]: <info>  [1566649570.1597] device (wlp3s0): supplicant interface state: authenticating -> associating
août 24 14:26:10 portable-simon NetworkManager[607]: <info>  [1566649570.1630] device (wlp3s0): supplicant interface state: associating -> 4-way handshake
août 24 14:26:10 portable-simon NetworkManager[607]: <info>  [1566649570.2047] device (wlp3s0): supplicant interface state: 4-way handshake -> completed

j’ai aussi tenté

echo "options iwlwifi bt_coex_active=N swcrypto=1 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf

Je suis à court d’idée

Si vous avez une idée comment résoudre le problème je suis prenneur

j’ai encore eu une idée de test

j’ai mis un wifi en usb

et lancer

watch -n 0.1 nmcli d wifi list

résultat seul la carte wifi intégré pose problème
parfois j’ai 0 resultat pour la carte interne alors que l’externe reste stable

(la carte externe n’a pas de 5Ghz)