Wi-Fi Intel 7265 오류 및 연결 끊김 -- iwlwifi는 모든 tx fifo 대기열을 플러시할 수 없습니다. -- Debian 8 Jessie

Intel 7265 WiFi 칩셋[2]을 사용하는 Debian 8[1]에서 심각한 WiFi 안정성 문제를 겪고 있습니다. WiFi 연결은 온전한 것 같았지만 무작위로 인터넷 연결이 끊어졌습니다. Wi-Fi를 끄거나 켜거나 시스템을 다시 시작하면 연결을 다시 얻을 수 있습니다. 지난 달에는 상황이 더욱 악화되어 연결이 더 자주 끊어졌습니다(5분 미만). 그래서 OS를 다시 설치하기로 결정했습니다. 성공하지 못했습니다:-(

연구하고 노력했지만 소용이 없었습니다. 내가 찾은칩셋이 최신 펌웨어 버전을 지원하지 않습니다.. 읽을 수 있는 명령/오류를 발견했습니다[3]. 가능한 해결책 중 하나 - 익숙해지기 어렵습니다.~인 것 같다굉장히 유사한질문 링크는 여기. 그리고 원하는 출력 [4].

non-free이제 드라이버를 사용하고 있으니 이 free드라이버를 사용해 봐야겠다는 생각이 들었습니다. 어쩌면 상황이 나아질 수도 있습니다. 하지만 현재 활성화되어 있는 결함이 있는 드라이버를 제거하고, 오픈 드라이버를 설치하고, 커널을 재구성해 본 경험이 없어서 걱정입니다. 하지만 약간의 도움을 받으면 시도해 볼 것입니다. 감사해요:)

[1]리눅스 버전

$ uname -a
Linux XXXXXX 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux

[2] 칩셋

$ lspci | grep Wireless
02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 3b)

[3] 에러 출력

$ dmesg | grep iwlwifi
[   38.436666] iwlwifi 0000:02:00.0: irq 65 for MSI/MSI-X
[   38.450545] iwlwifi 0000:02:00.0: firmware: direct-loading firmware iwlwifi-7265-9.ucode
[   38.450870] iwlwifi 0000:02:00.0: loaded firmware version 23.214.9.0 op_mode iwlmvm
[   38.486339] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x184
[   38.486636] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[   38.486798] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[   40.220157] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[   40.220323] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled

[  275.958950] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 0

[  275.958958] iwlwifi 0000:02:00.0: Current SW read_ptr 14 write_ptr 15
[  275.958995] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
[  275.959007] iwlwifi 0000:02:00.0: FH TRBs(1) = 0x80102052
[  275.959019] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
[  275.959032] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x8030000e
[  275.959044] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
[  275.959056] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
[  275.959069] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
[  275.959082] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x00709082
[  275.959133] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [14,15]
[  275.959183] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
[  275.959233] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [83,83]
[  275.959284] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959335] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959385] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959435] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959485] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959536] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959587] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [131,131]
[  275.959637] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959687] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959738] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959788] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959838] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959888] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959938] iwlwifi 0000:02:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.959988] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.960038] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  275.960090] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[  276.212876] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
[ 6230.465289] iwlwifi 0000:02:00.0: RF_KILL bit toggled to enable radio.
[ 6230.466255] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[ 6230.466413] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled

[4] 가능한 솔루션 요구 출력

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
    link/ether 30:65:ec:4b:84:e4 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 60:57:18:17:7d:4d brd ff:ff:ff:ff:ff:ff
    inet 192.168.178.24/24 brd 192.168.178.255 scope global dynamic wlan0
       valid_lft 860308sec preferred_lft 860308sec
    inet6 fe80::6257:18ff:fe17:7d4d/64 scope link 
       valid_lft forever preferred_lft forever