[Solved] Validated on a Lenovo Thinkpad T520 using a 6205 wifi card
$ lspci | grep 6205
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor
Peak] (rev 34)
Just add a file for iwlwifi options in /etc/modprobe.d (1 line) -
filename can be anything:
$ cat /etc/modprobe.d/fred.conf
options iwlwifi 11n_disable=1
Reboot after adding this file !
I prefer not to modify /etc/modprobe.d/iwlwifi.conf, as this file is
owned by package kmod, and can be modified at anytime.
I tried many times, wifi connection is restored in a 1 second. wifi
connection seems much stable.
Tried on Ubuntu Gnome 16.04 and Mint 18.
By the way, many posts are available on the internet about this issue,
and a lot of options are suggested. I recall that "modinfo -p" gives the
options available for a module:
$ sudo modinfo -p iwlwifi
swcrypto:using crypto in software (default 0 [hardware]) (int)
11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4:
disable agg RX, 8 enable agg TX (uint)
amsdu_size_8K:enable 8K amsdu size (default 0) (int)
fw_restart:restart firmware in case of error (default true) (bool)
antenna_coupling:specify antenna coupling in dB (default: 0 dB) (int)
nvm_file:NVM file name (charp)
d0i3_disable:disable d0i3 functionality (default: Y) (bool)
lar_disable:disable LAR functionality (default: N) (bool)
uapsd_disable:disable U-APSD functionality (default: Y) (bool)
bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default:
0) (int)
power_save:enable WiFi power management (default: disable) (bool)
power_level:default power save level (range from 1 - 5, default: 1) (int)
fw_monitor:firmware monitor - to debug FW (default: false - needs lots of
memory) (bool)
$ iwconfig wlp3s0
wlp3s0 IEEE 802.11abg ESSID:"freebox_CJBHVW"
Mode:Managed Frequency:2.417 GHz Access Point: F4:CA:E5:88:30:DC
Bit Rate=48 Mb/s Tx-Power=15 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=48/70 Signal level=-62 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:71 Missed beacon:0
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https://bugs.launchpad.net/bugs/1590985
Title:
Wifi non-functional after suspend (Intel 6205)
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