I have a Acer travilmate. After installing Ubuntu and connecting to a wireless network, my Wifi keeps turning on and off all the time, I hardly could do anything
This is really annoying because it stop me doing anything , I hardly load a video or game.
Is there any way to fix this and just let the wifi work As is required ?
Result of
lspci -nnk | grep -iA2 net:lspci -nnk | grep -iA2 net 00:1f.3 SMBus [0c05]: Intel Corporation NM10/ICH7 Family SMBus Controller [8086:27da] (rev 02) Subsystem: Acer Incorporated [ALI] Device [1025:0110] 02:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8038 PCI-E Fast Ethernet Controller [11ab:4352] (rev 14) Subsystem: Acer Incorporated [ALI] Device [1025:0110] Kernel driver in use: sky2 03:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02) Subsystem: Intel Corporation PRO/Wireless 3945BG Network Connection [8086:1005] Kernel driver in use: iwl3945 0a:09.0 CardBus bridge [0607]: Texas Instruments PCIxx12 Cardbus Controller [104c:8039]Result of
lsmod:lsmod Module Size Used by parport_pc 31981 0 ppdev 17391 0 bnep 18893 2 rfcomm 53664 16 btusb 23443 0 bluetooth 323622 22 bnep,btusb,rfcomm coretemp 13195 0 joydev 17097 0 acer_wmi 31735 0 sparse_keymap 13708 1 acer_wmi snd_hda_codec_si3054 12864 1 snd_hda_codec_realtek 45592 1 gspca_vc032x 31199 0 gspca_main 27772 1 gspca_vc032x videodev 107508 2 gspca_vc032x,gspca_main snd_hda_intel 42658 3 snd_hda_codec 164003 3 snd_hda_codec_realtek,snd_hda_codec_si3054,snd_hda_intel arc4 12536 2 snd_hwdep 13272 1 snd_hda_codec snd_pcm 89488 3 snd_hda_codec_si3054,snd_hda_codec,snd_hda_intel iwl3945 63619 0 snd_page_alloc 14230 2 snd_pcm,snd_hda_intel microcode 18830 0 iwlegacy 87971 1 iwl3945 i915 589697 3 snd_seq_midi 13132 0 mac80211 513247 2 iwl3945,iwlegacy snd_seq_midi_event 14475 1 snd_seq_midi snd_rawmidi 25094 1 snd_seq_midi psmouse 90642 0 snd_seq 55383 2 snd_seq_midi_event,snd_seq_midi pcmcia 51368 0 snd_seq_device 14137 3 snd_seq,snd_rawmidi,snd_seq_midi cfg80211 401436 3 iwl3945,iwlegacy,mac80211 drm_kms_helper 46867 1 i915 serio_raw 13189 0 snd_timer 24447 2 snd_pcm,snd_seq drm 242354 4 i915,drm_kms_helper snd 60790 17 snd_hda_codec_realtek,snd_hda_codec_si3054,snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi yenta_socket 40193 0 soundcore 12600 1 snd pcmcia_rsrc 18319 1 yenta_socket tifm_7xx1 13163 0 pcmcia_core 22328 3 pcmcia,pcmcia_rsrc,yenta_socket i2c_algo_bit 13197 1 i915 lpc_ich 16864 0 tifm_core 15040 1 tifm_7xx1 wmi 18590 1 acer_wmi video 18777 2 i915,acer_wmi mac_hid 13037 0 lp 13299 0 parport 40795 3 lp,ppdev,parport_pc hid_generic 12492 0 usbhid 47361 0 hid 87370 2 hid_generic,usbhid sky2 52910 0Result of
iwconfig:iwconfig wlan0 IEEE 802.11bg ESSID:"Etisalat" Mode:Managed Frequency:2.412 GHz Access Point: C8:D1:5E:5B:CB:2C Bit Rate=54 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=65/70 Signal level=-45 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:2 Missed beacon:0 lo no wireless extensions. eth0 no wireless extensions.Result of
ifconfig -a:ifconfig -a eth0 Link encap:Ethernet HWaddr 00:16:36:9b:da:24 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 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:1545 errors:0 dropped:0 overruns:0 frame:0 TX packets:1545 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:116454 (116.4 KB) TX bytes:116454 (116.4 KB) wlan0 Link encap:Ethernet HWaddr 00:18:de:46:aa:77 inet addr:192.168.1.6 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::218:deff:fe46:aa77/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2512 errors:0 dropped:0 overruns:0 frame:0 TX packets:2634 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:892621 (892.6 KB) TX bytes:478504 (478.5 KB)Result of
sudo iwlist scan:sudo iwlist scan wlan0 Scan completed : Cell 01 - Address: C8:D1:5E:5B:CB:2C Channel:1 Frequency:2.412 GHz (Channel 1) Quality=60/70 Signal level=-50 dBm Encryption key:on ESSID:"Etisalat" 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=0000000fee9c2e01 Extra: Last beacon: 44ms ago IE: Unknown: 000845746973616C6174 IE: Unknown: 010882848B961224486C IE: Unknown: 030101 IE: Unknown: 2A0100 IE: Unknown: 32040C183060 IE: Unknown: 2D1A8C0103FFFF0000000000000000000000000000000C0000000000 IE: Unknown: 3D1601000700000000000000000000000000000000000000 IE: Unknown: 3E0100 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00 IE: Unknown: DD07000C4307000000 IE: Unknown: 0706454720010D10 lo Interface doesn't support scanning. eth0 Interface doesn't support scanning.Result of
cat/etc/resolv.conf:cat/etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTENnameserver 127.0.1.1
Answer
Different Problems can cause this
Application errors, Driver problems, Hardware problems including overheat, Network Interferences, Network registration, Channel you selected etc.
First get rid of Interfering devices like mobile phones etc.
Go to Network Connections > Wireless > Edit and set it as automatically connect.
Check with power off the device.
sudo iwconfig [INTERFAE]wlan0 power off
[INTERFAE] may be wlan0 or eth0 (or 1,2,3, etc)
If not resolved.:
Install device drivers for wifi
sudo apt-get install collectd-core collectd-dev collectd-dbg collectd-utils
And change the applications
sudo apt-get install wicd-gtk wicd wicd-daemon wicd-curses wicd-cli
With Wicd, change the Channel to 6.
If not resolved yet Edit the question with including the results of lspci -nnk | grep -iA2 net, lsmod, iwconfig, ifconfig -a, sudo iwlist scan, cat /etc/resolv.conf. Someone with expert knowledge may help.
Attribution
Source : Link , Question Author : Temari , Answer Author : Community
