iwlwifi 5Ghz 인터넷이 몇 초 동안 무작위로 지연됩니다.

최근 인터넷 제공업체를 업그레이드하여 이제 2.4Ghz 및 5Ghz Wi-Fi를 사용할 수 있게 되었습니다. 2.4Ghz에서는 올바르게 연결할 수 있지만 5Ghz에서는 연결 시 임의의 "지연"이 발생합니다. 좀 더 구체적으로 말하면, 네트워크 관리자는 라우터와의 연결을 끊지 않지만, 지연이 있을 경우 브라우저에서 페이지를 새로 고치는 데 7~30초 정도 걸립니다. 때로는 SSH 연결도 끊어집니다. 이는 무작위로 발생하지만 일반적으로 3~5분마다 발생합니다. 5Ghz 채널 변경을 시도했지만 성공하지 못했습니다. 집에 있는 다른 장비에는 문제가 발생하지 않았습니다.

백포트에서 Intel 3160 드라이버를 다시 설치하고 Linux 이미지를 다시 설치해 보았지만 성공하지 못했습니다. 또한 wlan0에 대한 wifi.powersave를 비활성화했지만 운이 없습니다.

이 문제를 해결하거나 디버깅하는 방법을 아는 사람이 있습니까?

다음은 일부 시스템 정보입니다.

이름-a:

Linux debian 4.9.0-8-amd64 #1 SMP Debian 4.9.110-3+deb9u5 (2018-09-30) x86_64 GNU/Linux (Debian stretch)

lshw -C 네트워크:

*-network
       description: Wireless interface
       product: Wireless 3160
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 93
       serial: 34:e6:ad:be:63:65
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.9.0-8-amd64 firmware=17.948900127.0 ip=192.168.0.17 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:49 memory:c1000000-c1001fff

구성:

wlan0     IEEE 802.11  ESSID:"BRA****"  
          Mode:Managed  Frequency:5.56 GHz  Access Point: F8:AB:05:00:1E:DE   
          Bit Rate=390 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=62/70  Signal level=-48 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:125   Missed beacon:0

구성된 경우:

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.17  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::36e6:adff:febe:6365  prefixlen 64  scopeid 0x20<link>
        inet6 2a02:8109:a3c0:55af:36e6:adff:febe:6365  prefixlen 64  scopeid 0x0<global>
        ether 34:e6:ad:be:63:65  txqueuelen 1000  (Ethernet)
        RX packets 415816  bytes 507186123 (483.6 MiB)
        RX errors 0  dropped 2  overruns 0  frame 0
        TX packets 144134  bytes 31353570 (29.9 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisi

lspci -k -nn | lspci -k -nn | grep -A 3 -i 네트워크:

03:00.0 Network controller [0280]: Intel Corporation Wireless 3160 [8086:08b4] (rev 93)
    Subsystem: Intel Corporation Dual Band Wireless AC 3160 [8086:8270]
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi

modinfo iwlwifi:

filename:       /lib/modules/4.9.0-8-amd64/kernel/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko
license:        GPL
author:         Copyright(c) 2003- 2015 Intel Corporation <[email protected]>
description:    Intel(R) Wireless WiFi driver for Linux
firmware:       iwlwifi-100-5.ucode
firmware:       iwlwifi-1000-5.ucode
firmware:       iwlwifi-135-6.ucode
firmware:       iwlwifi-105-6.ucode
firmware:       iwlwifi-2030-6.ucode
firmware:       iwlwifi-2000-6.ucode
firmware:       iwlwifi-5150-2.ucode
firmware:       iwlwifi-5000-5.ucode
firmware:       iwlwifi-6000g2b-6.ucode
firmware:       iwlwifi-6000g2a-6.ucode
firmware:       iwlwifi-6050-5.ucode
firmware:       iwlwifi-6000-4.ucode
firmware:       iwlwifi-7265D-26.ucode
firmware:       iwlwifi-7265-17.ucode
firmware:       iwlwifi-3168-26.ucode
firmware:       iwlwifi-3160-17.ucode
firmware:       iwlwifi-7260-17.ucode
firmware:       iwlwifi-8265-26.ucode
firmware:       iwlwifi-8000C-26.ucode
firmware:       iwlwifi-9000-pu-a0-lc-a0--26.ucode
firmware:       iwlwifi-9260-th-a0-jf-a0--26.ucode
firmware:       iwlwifi-9000-pu-a0-jf-a0--26.ucode
firmware:       iwlwifi-Qu-a0-jf-b0--26.ucode
alias:          pci:v00008086d00002720sv*sd00000A10bc*sc*i*
alias:          pci:v00008086d0000A370sv*sd00001030bc*sc*i*
alias:          pci:v00008086d00002526sv*sd00001030bc*sc*i*
alias:          pci:v00008086d000031DCsv*sd00000030bc*sc*i*
[...]
depends:        cfg80211
retpoline:      Y
intree:         Y
vermagic:       4.9.0-8-amd64 SMP mod_unload modversions 
parm:           swcrypto:using crypto in software (default 0 [hardware]) (int)
parm:           11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
parm:           amsdu_size:amsdu size 0: 12K for multi Rx queue devices, 4K for other devices 1:4K 2:8K 3:12K (default 0) (int)
parm:           fw_restart:restart firmware in case of error (default true) (bool)
parm:           antenna_coupling:specify antenna coupling in dB (default: 0 dB) (int)
parm:           nvm_file:NVM file name (charp)
parm:           d0i3_disable:disable d0i3 functionality (default: Y) (bool)
parm:           lar_disable:disable LAR functionality (default: N) (bool)
parm:           uapsd_disable:disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3) (uint)
parm:           bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
parm:           led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
parm:           power_save:enable WiFi power management (default: disable) (bool)
parm:           power_level:default power save level (range from 1 - 5, default: 1) (int)
parm:           fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
parm:           d0i3_timeout:Timeout to D0i3 entry when idle (ms) (uint)
parm:           disable_11ac:Disable VHT capabilities (default: false) (bool)