Hi,
Can somebody please help me! I'm not computer savvy at all. After spending almost 3 weeks
with google search, reading through hundreds of posts in the ubuntu forums, and trying out all sorts of
terminal commands that are being suggested in these forums, I'm at my wits' end.
I've been using Ubuntu 12.04 LTS, and then the upgraded version 14.04, ever since Windows XP expired without any problems.
After a software update roughly 3 weeks ago, my wifi stopped working: The wifi connection first became unstable; and the more frequent the disconnection from the network became, the longer it took for wifi to reconnect until it reached a point where it couldn't connect to the network at all. I always made sure that the network passwords were entered correctly.
Ethernet works fine, and my wifi card is an Intel 3945ABG.
Also, on the rare and random occasion that a wifi connection to the home network could be established for whatever unknown
reason, I couldn't access the internet at all. I could ping the router and the localhost but no external IP or website.
Thus far, I have made several clean installs of Ubuntu 14.04 from a USB stick; I reverted to Ubuntu 12.04
once; and right now, I have installed Xubuntu 14.04 -- this all in the hope that this wifi problem will resolve itself
somehow (naive of me, I know), but the same problem pattern still persists. I also have a HP Mini with Ubuntu 14.04 LTS on it and its wifi works perfectly.
Here are some info
Code:
======== Wireless-Info START ========
System-Info ~~~~~~~~~~~~~~~~~~~~~~~~
HP-Pavilion-dv5 3.13.0-35-generic i686, Ubuntu 14.04.1 LTS, trusty
CPU : Genuine Intel(R) CPU T2050 @ 1.60GHz
Memory : 1499 MB
Uptime : 19:43:51 up 8:03, 2 users, load average: 0.18, 0.10, 0.06
lspci ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
06:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02)
Subsystem: Hewlett-Packard Company Device [103c:135b]
Kernel driver in use: iwl3945
--
08:08.0 Ethernet controller [0200]: Intel Corporation PRO/100 VE Network Connection [8086:1092] (rev 01)
Subsystem: Hewlett-Packard Company Device [103c:30a5]
Kernel driver in use: e100
lsusb ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
PCMCIA Card Info ~~~~~~~~~~~~~~~~~~~
PRODID_1=""
PRODID_2=""
PRODID_3=""
PRODID_4=""
MANFID=0000,0000
FUNCID=255
iwconfig ~~~~~~~~~~~~~~~~~~~~~~~~~~~
wlan0 IEEE 802.11abg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=14 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
rfkill ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Interface Soft blocked Hard blocked
0: phy0: Wireless LAN no no
lsmod ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hp_wmi 13702 0
sparse_keymap 13708 1 hp_wmi
iwl3945 63619 0
iwlegacy 88016 1 iwl3945
mac80211 546051 2 iwl3945,iwlegacy
cfg80211 409394 3 iwl3945,iwlegacy,mac80211
wmi 18673 1 hp_wmi
module parameters ~~~~~~~~~~~~~~~~~~
cfg80211 (2): cfg80211_disable_40mhz_24ghz=N | ieee80211_regdom=00
iwl3945 (4): antenna=0 | disable_hw_scan=1 | fw_restart=1 | swcrypto=1
iwlegacy (2): bt_coex_active=Y | led_mode=0
mac80211 (5): beacon_loss_count=7 | ieee80211_default_rc_algo=minstrel_ht | max_nullfunc_tries=2 | max_probe_tries=5 | probe_wait_ms=500
wmi (2): debug_dump_wdg=N | debug_event=N
nm-tool ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
State: connected (global)
============================o=============o=========o==============o=========o===========o==============o===========
Interface & ID | Type | Driver | State | Default | Speed | Support | HW Addr
============================o=============o=========o==============o=========o===========o==============o===========
eth0 [Wired connection 1] | Wired | e100 | connected | yes | 100 Mb/s | | <MAC eth0>
Address: 192.168.0.16
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.1
DNS: 68.105.28.12
DNS: 68.105.29.12
DNS: 68.105.28.11
----------------------------+-------------+---------+--------------+---------+-----------+--------------+-----------
wlan0 | 802.11 WiFi | iwl3945 | disconnected | no | | WEP/WPA/WPA2 | <MAC wlan0>
CuVinh: Infra, <MAC C-01 CuVinh>, Freq 2462 MHz, Rate 54 Mb/s, Strength 52 WPA
D7F393: Infra, <MAC C-NA D7F393 1>, Freq 2412 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
LanVy: Infra, <MAC C-NA LanVy 1>, Freq 2462 MHz, Rate 54 Mb/s, Strength 52 WPA2
JAZZY1: Infra, <MAC C-NA JAZZY1 1>, Freq 2462 MHz, Rate 54 Mb/s, Strength 44 WEP
CenturyLink1392: Infra, <MAC C-02 CenturyLink1392>, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2
Anarchy: Infra, <MAC C-03 Anarchy>, Freq 2422 MHz, Rate 54 Mb/s, Strength 17 WPA WPA2
----------------------------+-------------+---------+--------------+---------+-----------+--------------+-----------
NetworkManager.state ~~~~~~~~~~~~~~~
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
NetworkManager.conf ~~~~~~~~~~~~~~~~
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
NM WiFi Profiles ~~~~~~~~~~~~~~~~~~~
LanVy : ssid=LanVy | mac-address=<MAC wlan0> | ipv4=auto | ipv6=auto
interfaces ~~~~~~~~~~~~~~~~~~~~~~~~~
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
resolv.conf ~~~~~~~~~~~~~~~~~~~~~~~~
nameserver 127.0.1.1
Routes & Ping ~~~~~~~~~~~~~~~~~~~~~~
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
--- 192.168.0.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 20.213/39.626/59.040/19.414 ms
--- 127.0.1.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.058/0.063/0.069/0.009 ms
iw reg get ~~~~~~~~~~~~~~~~~~~~~~~~~
(Region : "en_US.UTF-8")
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 chan ~~~~~~~~~~~~~~~~~~~~~~~~
wlan0 24 channels in total; available frequencies :
Channel 01 (2.412 GHz) - 11 (2.462 GHz)
Channel 36 (5.18 GHz)
Channel 40 (5.2 GHz)
Channel 44 (5.22 GHz)
Channel 48 (5.24 GHz)
Channel 52 (5.26 GHz)
Channel 56 (5.28 GHz)
Channel 60 (5.3 GHz)
Channel 64 (5.32 GHz)
Channel 149 (5.745 GHz)
Channel 153 (5.765 GHz)
Channel 157 (5.785 GHz)
Channel 161 (5.805 GHz)
Channel 165 (5.825 GHz) - 11 (2.462 GHz)
iwlist scan ~~~~~~~~~~~~~~~~~~~~~~~~
wlan0 Scan completed :
Cell 01 - Address: <MAC C-01 CuVinh>
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=41/70 Signal level=-69 dBm
Encryption key:on
ESSID:"CuVinh"
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=000000c8fcf1e81b
Extra: Last beacon: 36ms ago
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
Cell 02 - Address: <MAC C-02 CenturyLink1392>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=32/70 Signal level=-78 dBm
Encryption key:on
ESSID:"CenturyLink1392"
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=000001d543962363
Extra: Last beacon: 36ms 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
Cell 03 - Address: <MAC C-03 Anarchy>
Channel:3
Frequency:2.422 GHz (Channel 3)
Quality=22/70 Signal level=-88 dBm
Encryption key:on
ESSID:"Anarchy"
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=000000386738042a
Extra: Last beacon: 36ms 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
blacklist ~~~~~~~~~~~~~~~~~~~~~~~~~~
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
modinfo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[hp_wmi]
filename: /lib/modules/3.13.0-35-generic/kernel/drivers/platform/x86/hp-wmi.ko
srcversion: 22DCD1B7DA09178B45B1068
depends: wmi,sparse-keymap
[iwl3945]
filename: /lib/modules/3.13.0-35-generic/kernel/drivers/net/wireless/iwlegacy/iwl3945.ko
firmware: iwlwifi-3945-2.ucode
version: in-tree:s
srcversion: C93C31FCEBBAE1F376E495F
depends: iwlegacy,cfg80211,mac80211
parm: antenna:select antenna (1=Main, 2=Aux, default 0 [both]) (int)
parm: swcrypto:using software crypto (default 1 [software]) (int)
parm: disable_hw_scan:disable hardware scanning (default 1) (int)
parm: fw_restart:restart firmware in case of error (int)
[iwlegacy]
filename: /lib/modules/3.13.0-35-generic/kernel/drivers/net/wireless/iwlegacy/iwlegacy.ko
version: in-tree:
srcversion: 400F302BE5C25B3C98A6CE8
depends: mac80211,cfg80211
parm: led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking (int)
parm: bt_coex_active:enable wifi/bluetooth co-exist (bool)
[mac80211]
filename: /lib/modules/3.13.0-35-generic/kernel/net/mac80211/mac80211.ko
srcversion: D491AB7C521706DA5F4BE7C
depends: cfg80211
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/3.13.0-35-generic/kernel/net/wireless/cfg80211.ko
srcversion: C2478077E22138832B71659
depends:
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
[wmi]
filename: /lib/modules/3.13.0-35-generic/kernel/drivers/platform/x86/wmi.ko
srcversion: CED5410F008DC70DF5F064B
depends:
parm: debug_event:Log WMI Events [0/1] (bool)
parm: debug_dump_wdg:Dump available WMI interfaces [0/1] (bool)
udev rules ~~~~~~~~~~~~~~~~~~~~~~~~~
# PCI device 0x8086:0x1092 (e100)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC eth0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x4222 (iwl3945)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC wlan0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
Custom files/entries ~~~~~~~~~~~~~~~
/etc/modules : Default
/etc/rc.local : Default
/etc/modprobe.d : Not Default
/etc/pm/(cnf|pw|sl) : Default
[/etc/modprobe.d]
iwlwifi.conf : remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
mlx4.conf : softdep mlx4_core post: mlx4_en
Kernel boot line ~~~~~~~~~~~~~~~~~~~
BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic root=UUID=5727ac1b-4de6-4ac1-a4f0-868ad811e145 ro quiet splash vt.handoff=7
dmesg ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[ 3.100341] microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
[ 3.101225] audit: initializing netlink socket (disabled)
[ 19.031447] wmi: Mapper loaded
[ 19.374466] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:s
[ 19.374472] iwl3945: Copyright(c) 2003-2011 Intel Corporation
[ 19.374533] iwl3945 0000:06:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 19.437756] iwl3945 0000:06:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 19.437765] iwl3945 0000:06:00.0: Detected Intel Wireless WiFi Link 3945ABG
[ 19.437850] iwl3945 0000:06:00.0: irq 45 for MSI/MSI-X
[ 19.466540] ieee80211 phy0: Selected rate control algorithm 'iwl-3945-rs'
[ 21.844835] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 22.983557] iwl3945 0000:06:00.0: loaded firmware version 15.32.2.9
[ 23.055934] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 23.056496] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 51.096508] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 51.098240] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 51.100175] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 53.236797] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 53.241164] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 53.243241] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 55.780835] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 55.782972] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 55.784870] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 58.832787] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 58.834826] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 58.836722] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 72.904802] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 72.906924] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 72.909849] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 4613.612751] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 4613.614689] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 4613.617531] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 4625.689415] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 4625.691224] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 4625.698579] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 6781.305108] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 6781.307385] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 6781.311960] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[ 6793.345077] wlan0: authenticate with <MAC C-NA LanVy 1>
[ 6793.346861] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[ 6793.351475] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[26755.805624] wlan0: authenticate with <MAC C-NA LanVy 1>
[26755.807908] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[26755.809856] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
[26767.861210] wlan0: authenticate with <MAC C-NA LanVy 1>
[26767.864714] wlan0: send auth to <MAC C-NA LanVy 1> (try 1/3)
[26767.868808] wlan0: <MAC C-NA LanVy 1> denied authentication (status 1)
======== Done ========