11.10 fresh install, wireless is very slow.

[siddi]

hi guys.
I am a bit totally lost here.... I have tried in vain for the last 2 months to fix my wifi after i upgraded to ubuntu 11.10

I have an acer aspire 5570, it connects to the internet but the connection keeps dropping every few seconds...

Am not that tech savvy.

Could anybody please take me tru fixing this?

thanks

regards
sid

[wildmanne39]

Hi, please post the output of:

cat /etc/lsb-release; uname -a
lspci -nnk | grep -iA2 net
iwconfig
rfkill list all
lsmod

here by clicking on new reply and click # and paste the information between the brackets.
Thank you

[siddi]

siddharth@siddharth-Aspire-5570:~$ cat /etc/lsb-release; uname -a
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.10
DISTRIB_CODENAME=oneiric
DISTRIB_DESCRIPTION="Ubuntu 11.10"
Linux siddharth-Aspire-5570 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:34:47 UTC 2011 i686 i686 i386 GNU/Linux
siddharth@siddharth-Aspire-5570:~$ lspci -nnk | grep -iA2 net
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
Kernel modules: iwl3945
siddharth@siddharth-Aspire-5570:~$ iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bg ESSID:"kobold"
Mode:Managed Frequency:2.462 GHz Access Point: 5C9:98:16:6C:FC
Bit Rate=48 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thrff Fragment thrff
Power Managementff
Link Quality=62/70 Signal level=-48 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:45 Missed beacon:0

siddharth@siddharth-Aspire-5570:~$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
2: acer-wireless: Wireless LAN
Soft blocked: no
Hard blocked: no
3: acer-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
siddharth@siddharth-Aspire-5570:~$ lsmod
Module Size Used by
rfcomm 38408 8
bnep 17923 2
parport_pc 32114 0
ppdev 12849 0
gspca_vc032x 31999 0
gspca_main 27610 1 gspca_vc032x
videodev 85626 1 gspca_main
snd_atiixp_modem 18604 0
snd_via82xx_modem 18377 0
snd_hda_codec_si3054 12864 1
snd_intel8x0m 18498 0
snd_hda_codec_realtek 254125 1
snd_ac97_codec 106082 3 snd_atiixp_modem,snd_via82xx_modem,snd_intel8x0m
joydev 17393 0
ac97_bus 12642 1 snd_ac97_codec
snd_hda_intel 24262 2
snd_hda_codec 91754 3 snd_hda_codec_si3054,snd_hda_codec_realtek,snd_hda _intel
snd_hwdep 13276 1 snd_hda_codec
snd_pcm 80435 7 snd_atiixp_modem,snd_via82xx_modem,snd_hda_codec_s i3054,snd_intel8x0m,snd_ac97_codec,snd_hda_intel,s nd_hda_codec
acer_wmi 23302 0
sparse_keymap 13658 1 acer_wmi
snd_seq_midi 13132 0
snd_rawmidi 25241 1 snd_seq_midi
pcmcia 39822 0
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event
btusb 18160 2
arc4 12473 2
tifm_7xx1 12937 0
snd_timer 28932 2 snd_pcm,snd_seq
bluetooth 148839 23 rfcomm,bnep,btusb
snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
tifm_core 15040 1 tifm_7xx1
iwl3945 73360 0
i915 505159 4
yenta_socket 27428 0
pcmcia_rsrc 18367 1 yenta_socket
iwl_legacy 71499 1 iwl3945
mac80211 393459 2 iwl3945,iwl_legacy
snd 55902 18 snd_atiixp_modem,snd_via82xx_modem,snd_hda_codec_s i3054,snd_intel8x0m,snd_hda_codec_realtek,snd_ac97 _codec,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_p cm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
pcmcia_core 21511 3 pcmcia,yenta_socket,pcmcia_rsrc
drm_kms_helper 32889 1 i915
drm 192194 5 i915,drm_kms_helper
cfg80211 172392 3 iwl3945,iwl_legacy,mac80211
psmouse 73673 0
serio_raw 12990 0
soundcore 12600 1 snd
binfmt_misc 17292 1
snd_page_alloc 14115 5 snd_atiixp_modem,snd_via82xx_modem,snd_intel8x0m,s nd_hda_intel,snd_pcm
i2c_algo_bit 13199 1 i915
wmi 18744 1 acer_wmi
video 18908 1 i915
lp 17455 0
parport 40930 3 parport_pc,ppdev,lp
sky2 49317 0
siddharth@siddharth-Aspire-5570:~$

[wildmanne39]

Hi siddi, when you post it is helpful if you state your problem exactly, I can only assume your connection is slow but I do not know if you are having other issues with it as well.

Please try this:

gksudo gedit /etc/modprobe.d/iwl3945.conf

Add one line:

options iwl3945 disable_hw_scan=0

save, exit gedit and reboot.
Thanks

[siddi]

hey,

The connection speed is perfectly alright... But every few seconds the wireless signal drops and it gets disconnected. then it scans and connects back again... Sometimes it stays connected for 10 minutes, but sometimes it drops every few seconds.

the first command u gave, gave me back a file.. I typed the second command in the file window that opened and saved it as under modeprobe...

is that right?

[wildmanne39]

Hi, always just copy and paste everything for accuracy, and the file just needed to be saved and it will save as the proper name so if you did not change the name it saved it as it was suppose to which is

/etc/modprobe.d/iwl3945.conf

You are having a different issue then I thought so if the problem continues we will open this file and change it to another option now that I know the issue.
Thanks

[siddi]

cool.. as of now... the wireless has not dropped for the first time in 5 minutes.... hopefully it doesn't

thank u very much for the help... very grateful....

Will have to get back to u if the problem persists...

[siddi]

ah well.....
it is still dropping and reconnecting.....

[wildmanne39]

Hi siddi, open that file back up and remove

options iwl3945 disable_hw_scan=0

add:

options iwl3945 swcrypto=0

Thanks

[siddi]

still not working