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1. matoken (matoken@gnusocial.matoken.org)'s status on Thursday, 02-Jan-2020 18:55:22 JST matoken
   最近NotePCのWi-fi の調子が悪い
   起動直後大抵繋がらない
   何度か接続するとつながって一度つながるとしばらくは安定
   しかし昨日今日何度もつなぎ直すけど繋がらない
   NICはIntl Centrino Advanced-N 6205 でドライバは iwlwifi
   
   $ lspci | grep -i network|grep -v Gigabit
   03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)
   $ lsmod|grep ^iwlwifi
   iwlwifi 274432 1 iwldvm
   • matoken (matoken@gnusocial.matoken.org)'s status on Thursday, 02-Jan-2020 18:56:51 JST matoken

     in reply to
     iwlwifi のパラメータに 11n_disable=1 を付けて 11n を無効にすればいいと見かけて付けるも変わらず
     wd_disable=1 も付ける遠いと見かけて付けるも変わらず
   • matoken (matoken@gnusocial.matoken.org)'s status on Thursday, 02-Jan-2020 18:57:30 JST matoken

     in reply to
     他のパラメータを確認
     
     $ modinfo iwlwifi|grep ^parm:
     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, 2K for 22560 devices, 4K for other devices 1:4K 2:8K 3:12K 4
     : 2K (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: 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: enable_ini:Enable debug INI TLV FW debug infrastructure (default: 0 (bool)
     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: disable_11ac:Disable VHT capabilities (default: false) (bool)
     parm: remove_when_gone:Remove dev from PCIe bus if it is deemed inaccessible (default: false) (bool)
     parm: disable_11ax:Disable HE capabilities (default: false) (bool)
   • matoken (matoken@gnusocial.matoken.org)'s status on Thursday, 02-Jan-2020 18:58:21 JST matoken

     in reply to
     てことで現在以下のパラメータを付けて安定した．
     多分要らないのもあるので後で切り分けする
     
     iwlwifi 11n_disable=1 wd_disable=1 power_save=0 disable_11ac=1 disable_11ax=1
   • matoken (matoken@gnusocial.matoken.org)'s status on Thursday, 02-Jan-2020 18:59:10 JST matoken

     in reply to
     永続化
     
     $ echo "options iwlwifi 11n_disable=1 wd_disable=1 power_save=0 disable_11ac=1 disable_11ax=1" | sudo tee /etc/modprobe.d/iwlwifi.conf