My wireless/WiFi connection does not work. What information is needed to diagnose the issue?
Wireless Info Script
The easiest and most complete method of gathering information to help diagnose wireless issues is to run the wireless info script we created at the Ubuntu Forums to collect all the most common information needed while masking all sensitive data.
Open a terminal with Ctrl+Alt+T and run these commands:
wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info &&
chmod +x wireless-info &&
./wireless-info
This will create the file "wireless-info.txt" at the location it is run from, and depending on its size, an additional archive called "wireless-info.tar.gz". Sensitive information like MAC addresses and WPA/WEP keys are masked automatically.
If you cannot connect to the internet with the affected system, including via a wired connection, you will have to move files between it and a system connected to the internet. A USB stick would likely be the easiest method for this.
Post the results on paste.ubuntu.com or pastebin.com, and link to it here in your question.
Further details on the script: GitHub page.
Here is an example of the information that the script will collect:
########## wireless info START ########## Report from: 02 May 2015 23:04 CDT -0500 Booted last: 01 May 2015 00:44 CDT -0500 Script from: 30 Apr 2015 17:23 UTC +0000 ##### release ########################### Distributor ID: Ubuntu Description: Ubuntu 14.04.2 LTS Release: 14.04 Codename: trusty ##### kernel ############################ Linux 3.13.0-49-generic #81-Ubuntu SMP Tue Mar 24 19:29:48 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux Parameters: ro, quiet, splash, vt.handoff=7 ##### desktop ########################### GNOME Flashback (Compiz) ##### lspci ############################# 02:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57785 Gigabit Ethernet PCIe [14e4:16b5] (rev 10) Subsystem: Acer Incorporated [ALI] Device [1025:0647] Kernel driver in use: tg3 03:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01) Subsystem: Lite-On Communications Inc Device [11ad:6617] Kernel driver in use: ath9k ##### lsusb ############################# Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 1bcf:2c18 Sunplus Innovation Technology Inc. Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ##### PCMCIA card info ################## ##### rfkill ############################ 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: acer-wireless: Wireless LAN Soft blocked: no Hard blocked: no ##### lsmod ############################# acer_wmi 32522 0 sparse_keymap 13948 1 acer_wmi ath9k 164164 0 ath9k_common 13551 1 ath9k ath9k_hw 453856 2 ath9k_common,ath9k ath 28698 3 ath9k_common,ath9k,ath9k_hw mac80211 630669 1 ath9k cfg80211 484040 3 ath,ath9k,mac80211 wmi 19177 1 acer_wmi video 19476 2 i915,acer_wmi ##### interfaces ######################## auto lo iface lo inet loopback ##### ifconfig ########################## eth0 Link encap:Ethernet HWaddr UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:16 wlan0 Link encap:Ethernet HWaddr inet addr:192.168.43.63 Bcast:192.168.43.255 Mask:255.255.255.0 inet6 addr: 2600:100c:b004:3fa3:2216:d8ff:fe89:5871/64 Scope:Global inet6 addr: fe80::2216:d8ff:fe89:5871/64 Scope:Link inet6 addr: 2600:100c:b004:3fa3:9db3:d3ca:cda7:6666/64 Scope:Global UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:227572 errors:0 dropped:0 overruns:0 frame:0 TX packets:200363 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:162556355 (162.5 MB) TX bytes:31143668 (31.1 MB) ##### iwconfig ########################## eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"scubby" Mode:Managed Frequency:2.437 GHz Access Point: Bit Rate=12 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=70/70 Signal level=-33 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:150 Missed beacon:0 ##### route ############################# Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.43.1 0.0.0.0 UG 0 0 0 wlan0 192.168.43.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0 ##### resolv.conf ####################### nameserver 127.0.1.1 #ubuntuforums-mods ##### NetworkManager info ############### NetworkManager Tool State: connected (global) - Device: wlan0 [scubby] ------------------------------------------------------- Type: 802.11 WiFi Driver: ath9k State: connected Default: yes HW Address: Capabilities: Speed: 54 Mb/s Wireless Properties WEP Encryption: yes WPA Encryption: yes WPA2 Encryption: yes Wireless Access Points (* = current AP) ATT9156: Infra, , Freq 2412 MHz, Rate 54 Mb/s, Strength 37 WPA2 taarakian: Infra, , Freq 2417 MHz, Rate 54 Mb/s, Strength 29 WPA2 NETGEAR: Infra, , Freq 2462 MHz, Rate 54 Mb/s, Strength 19 WPA WPA2 suddenlink.net-1140: Infra, , Freq 2412 MHz, Rate 54 Mb/s, Strength 7 WPA2 RSS-351540: Infra, , Freq 2412 MHz, Rate 54 Mb/s, Strength 12 WPA2 suddenlink.net-9572: Infra, , Freq 2462 MHz, Rate 54 Mb/s, Strength 12 WPA WPA2 SJI: Infra, , Freq 2412 MHz, Rate 54 Mb/s, Strength 20 WPA2 NETGEAR70: Infra, , Freq 2447 MHz, Rate 54 Mb/s, Strength 5 WPA2 SUDDENLINK.NET-6E3D: Infra, , Freq 2462 MHz, Rate 54 Mb/s, Strength 39 WEP *scubby: Infra, , Freq 2437 MHz, Rate 54 Mb/s, Strength 85 WPA2 SJI Guest: Infra, , Freq 2412 MHz, Rate 54 Mb/s, Strength 12 ATT677: Infra, , Freq 2452 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2 IPv4 Settings: Address: 192.168.43.63 Prefix: 24 (255.255.255.0) Gateway: 192.168.43.1 DNS: 192.168.43.1 - Device: eth0 ----------------------------------------------------------------- Type: Wired Driver: tg3 State: unavailable Default: no HW Address: Capabilities: Carrier Detect: yes Wired Properties Carrier: off ##### NetworkManager.state ############## [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ##### NetworkManager.conf ############### [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq [ifupdown] managed=false ##### NetworkManager profiles ########### [[/etc/NetworkManager/system-connections/DIRECT-roku-067-072A4B]] (600 root) [connection] id=DIRECT-roku-067-072A4B | type=802-11-wireless [802-11-wireless] ssid=DIRECT-roku-067-072A4B | mac-address= [ipv4] method=auto [ipv6] method=auto ##### iw reg get ######################## Region: America/Chicago (based on set time zone) country 00: (2402 - 2472 @ 40), (3, 20) (2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS ##### iwlist channels ################### eth0 no frequency information. lo no frequency information. wlan0 13 channels in total; available frequencies : Channel 01 : 2.412 GHz Channel 02 : 2.417 GHz Channel 03 : 2.422 GHz Channel 04 : 2.427 GHz Channel 05 : 2.432 GHz Channel 06 : 2.437 GHz Channel 07 : 2.442 GHz Channel 08 : 2.447 GHz Channel 09 : 2.452 GHz Channel 10 : 2.457 GHz Channel 11 : 2.462 GHz Channel 12 : 2.467 GHz Channel 13 : 2.472 GHz Current Frequency:2.437 GHz (Channel 6) ##### iwlist scan ####################### Channel occupancy: 2 APs on Frequency:2.412 GHz (Channel 1) 1 APs on Frequency:2.417 GHz (Channel 2) 1 APs on Frequency:2.437 GHz (Channel 6) 2 APs on Frequency:2.462 GHz (Channel 11) eth0 Interface doesn't support scanning. lo Interface doesn't support scanning. wlan0 Scan completed : Cell 01 - Address: Channel:6 Frequency:2.437 GHz (Channel 6) Quality=30/70 Signal level=-80 dBm Encryption key:on ESSID:"Larry" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s 24 Mb/s; 36 Mb/s; 54 Mb/s Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s Mode:Master Extra:tsf=0000000028511003 Extra: Last beacon: 20ms ago IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK Cell 02 - Address: Channel:1 Frequency:2.412 GHz (Channel 1) Quality=29/70 Signal level=-81 dBm Encryption key:on ESSID:"ATT9156" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s Mode:Master Extra:tsf=00000371b6618537 Extra: Last beacon: 20ms ago IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK Cell 03 - Address: Channel:1 Frequency:2.412 GHz (Channel 1) Quality=28/70 Signal level=-82 dBm Encryption key:off ESSID:"SJI Guest" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s Mode:Master Extra:tsf=000000149eca5197 Extra: Last beacon: 2304ms ago Cell 04 - Address: Channel:2 Frequency:2.417 GHz (Channel 2) Quality=20/70 Signal level=-90 dBm Encryption key:on ESSID:"taarakian" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s Mode:Master Extra:tsf=00000268fbeb2d80 Extra: Last beacon: 1996ms ago IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK Cell 05 - Address: Channel:11 Frequency:2.462 GHz (Channel 11) Quality=37/70 Signal level=-73 dBm Encryption key:on ESSID:"SUDDENLINK.NET-6E3D" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s 18 Mb/s; 36 Mb/s; 54 Mb/s Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s Mode:Master Extra:tsf=000001765a3e4af3 Extra: Last beacon: 20ms ago Cell 06 - Address: Channel:11 Frequency:2.462 GHz (Channel 11) Quality=23/70 Signal level=-87 dBm Encryption key:on ESSID:"NETGEAR" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s 24 Mb/s; 36 Mb/s; 54 Mb/s Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s Mode:Master Extra:tsf=00000092d136ec9e Extra: Last beacon: 20ms ago IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : CCMP TKIP Authentication Suites (1) : PSK IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : CCMP TKIP Authentication Suites (1) : PSK ##### module infos ###################### [ath9k] filename: /lib/modules/3.13.0-49-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko license: Dual BSD/GPL description: Support for Atheros 802.11n wireless LAN cards. author: Atheros Communications srcversion: 274594FBD61F5DF88102A4C depends: ath9k_hw,mac80211,ath9k_common,cfg80211,ath intree: Y vermagic: 3.13.0-49-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: A2:F2:B9:84:B0:F0:3D:B6:0B:A1:EA:08:10:49:37:4C:1A:C3:D9:02 sig_hashalgo: sha512 parm: debug:Debugging mask (uint) parm: nohwcrypt:Disable hardware encryption (int) parm: blink:Enable LED blink on activity (int) parm: btcoex_enable:Enable wifi-BT coexistence (int) parm: bt_ant_diversity:Enable WLAN/BT RX antenna diversity (int) parm: ps_enable:Enable WLAN PowerSave (int) [ath9k_common] filename: /lib/modules/3.13.0-49-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko license: Dual BSD/GPL description: Shared library for Atheros wireless 802.11n LAN cards. author: Atheros Communications srcversion: 93644B269B570BC55CF5154 depends: ath,ath9k_hw intree: Y vermagic: 3.13.0-49-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: A2:F2:B9:84:B0:F0:3D:B6:0B:A1:EA:08:10:49:37:4C:1A:C3:D9:02 sig_hashalgo: sha512 [ath9k_hw] filename: /lib/modules/3.13.0-49-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko license: Dual BSD/GPL description: Support for Atheros 802.11n wireless LAN cards. author: Atheros Communications srcversion: 65C14EF588BF1A68181643C depends: ath intree: Y vermagic: 3.13.0-49-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: A2:F2:B9:84:B0:F0:3D:B6:0B:A1:EA:08:10:49:37:4C:1A:C3:D9:02 sig_hashalgo: sha512 [ath] filename: /lib/modules/3.13.0-49-generic/kernel/drivers/net/wireless/ath/ath.ko license: Dual BSD/GPL description: Shared library for Atheros wireless LAN cards. author: Atheros Communications srcversion: 88A67C5359B02C5A710AFCF depends: cfg80211 intree: Y vermagic: 3.13.0-49-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: A2:F2:B9:84:B0:F0:3D:B6:0B:A1:EA:08:10:49:37:4C:1A:C3:D9:02 sig_hashalgo: sha512 [mac80211] filename: /lib/modules/3.13.0-49-generic/kernel/net/mac80211/mac80211.ko license: GPL description: IEEE 802.11 subsystem srcversion: 29A87AE7782ED3657631C32 depends: cfg80211 intree: Y vermagic: 3.13.0-49-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: A2:F2:B9:84:B0:F0:3D:B6:0B:A1:EA:08:10:49:37:4C:1A:C3:D9:02 sig_hashalgo: sha512 parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int) parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int) parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int) parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int) parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp) [cfg80211] filename: /lib/modules/3.13.0-49-generic/kernel/net/wireless/cfg80211.ko description: wireless configuration support license: GPL author: Johannes Berg srcversion: 176113E009F723E69BE9BAB depends: intree: Y vermagic: 3.13.0-49-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: A2:F2:B9:84:B0:F0:3D:B6:0B:A1:EA:08:10:49:37:4C:1A:C3:D9:02 sig_hashalgo: sha512 parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp) parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool) ##### module parameters ################# [ath9k] blink: 0 bt_ant_diversity: 0 btcoex_enable: 0 nohwcrypt: 0 ps_enable: 0 [mac80211] beacon_loss_count: 7 ieee80211_default_rc_algo: minstrel_ht max_nullfunc_tries: 2 max_probe_tries: 5 probe_wait_ms: 500 [cfg80211] cfg80211_disable_40mhz_24ghz: N ieee80211_regdom: 00 ##### /etc/modules ###################### lp rtc ##### modprobe options ################## [/etc/modprobe.d/blacklist-ath_pci.conf] blacklist ath_pci [/etc/modprobe.d/blacklist.conf] blacklist evbug blacklist usbmouse blacklist usbkbd blacklist eepro100 blacklist de4x5 blacklist eth1394 blacklist snd_intel8x0m blacklist snd_aw2 blacklist i2c_i801 blacklist prism54 blacklist bcm43xx blacklist garmin_gps blacklist asus_acpi blacklist snd_pcsp blacklist pcspkr blacklist amd76x_edac [/etc/modprobe.d/blacklist-rare-network.conf] alias net-pf-3 off alias net-pf-6 off alias net-pf-9 off alias net-pf-11 off alias net-pf-12 off alias net-pf-19 off alias net-pf-21 off alias net-pf-36 off [/etc/modprobe.d/iwlwifi.conf] remove iwlwifi \ (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \ && /sbin/modprobe -r mac80211 [/etc/modprobe.d/mlx4.conf] softdep mlx4_core post: mlx4_en ##### rc.local ########################## exit 0 ##### pm-utils ########################## [/etc/pm/power.d/disable_wol] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 [/etc/pm/power.d/laptop-mode] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 [/etc/pm/power.d/pci_devices] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 [/etc/pm/power.d/pcie_aspm] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 [/etc/pm/power.d/sched-powersave] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 [/etc/pm/power.d/usb_bluetooth] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 [/etc/pm/power.d/wireless] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 [/etc/pm/power.d/xfs_buffer] (777 root) CONFFILE=/etc/default/tlp LIBDIRS='/usr/lib /usr/lib64' for d in ${LIBDIRS}; do if [ -d "${d}/pm-utils/power.d" ]; then blocked="${d}/pm-utils/power.d/${0##*/}" break fi done if [ -n "$blocked" ] && [ -x "$blocked" ]; then # else nothing to disable -> don't read $CONFFILE if [ -e "$CONFFILE" ] && . "$CONFFILE" && [ "$TLP_ENABLE" = '1' ]; then # TLP is enabled -> disable $blocked echo "Notice: '${blocked}' disabled by TLP." else exec "$blocked" $* fi fi exit 0 ##### udev rules ######################## [/etc/udev/rules.d/70-persistent-net.rules] # PCI device 0x14e4:0x16b5 (tg3) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x168c:0x0032 (ath9k) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0" # USB device 0x:0x (rndis_host) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" ##### dmesg ############################# [53764.123272] wlan0: deauthenticating from by local choice (reason=3) [53766.341705] ath: phy0: ASPM enabled: 0x43 [53769.663996] ath9k 0000:03:00.0: no hotplug settings from platform [53770.839058] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [53772.588289] wlan0: authenticate with [53772.612650] wlan0: send auth to (try 1/3) [53772.614687] wlan0: authenticated [53772.614954] wlan0: AP has invalid WMM params (AIFSN=1 for ACI 2), disabling WMM [53772.615474] wlan0: associate with (try 1/3) [53772.618314] wlan0: RX AssocResp from (capab=0x411 status=0 aid=1) [53772.618513] wlan0: associated [53772.618541] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [53772.771949] wlan0: deauthenticating from by local choice (reason=2) [53772.783893] wlan0: authenticate with [53772.801865] wlan0: send auth to (try 1/3) [53772.803896] wlan0: authenticated [53772.804020] wlan0: AP has invalid WMM params (AIFSN=1 for ACI 2), disabling WMM [53772.807642] wlan0: associate with (try 1/3) [53772.810355] wlan0: RX AssocResp from (capab=0x411 status=0 aid=1) [53772.810561] wlan0: associated ########## wireless info END ############
I would want everything in this script:
wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info
It gathers all the information that I would like to see and, in most cases, correct any wireless problem.
After the report is created, I wold want the result posted here: http://paste.ubuntu.com Then give us the link in your original question.
What information do we need? This:
- What have you tried? What happened when you tried it?
- What do you mean by "doesn't work"? The indicator applet appears to show connectivity but you can't reach any web pages? The indicator applet is frozen? Not present? You can select a connection from the indicator applet but the password for that connection doesn't work?
- What is the make of your machine and which version of Ubuntu are you running?
- Has it ever worked? (ie, Did it work for a while and stop working? Did it work under Windows but not under Ubuntu? Did it work under 12.04 but not 13.10?)
The Ubuntu Wireless Troubleshooting Guide appears to be current, so that might be a place to start. Some useful commands there:
If your wireless has worked on this install before, and you want to troubleshoot a connection:
nm-tool
will give you a report on the state of your network manager and any attached devices.rfkill
will enable or disable network devices.rfkill --list
will list any available devices and provide some clues to their state. You may need to run this as root.ifdown
andifup
will bring network interfaces up and down. If you've changed settings, stopping and starting (as root) withifdown wlan0
andifup wlan0
may help.- Not sure what your network interfaces are even called? Try
ifconfig -a
If you aren't sure you even have drivers installed, find out with lshw
if your wireless card is built in, or lspci
(for PCI cards -- less likely these days) or lsusb
(for a USB wireless device). lshw -C network
will display details of hardware in the "network" class, which is what you want. Again, you may need to run this as root.