Yet another wifi issue on 10.10 (Intel Pro 3945ABG)

[ndxtg]

As title said, wifi randomly drops on Ubuntu 10.10 32bit. I just upgraded from 9.04 to 10.10 (clean install) and face this issue.

There was a fix for Broadcom but not Intel Pro, so I just type some descriptions here in hope that the developers may have some clues on fixing it.

_ Wifi randomly drops for no reason.
_ The card works fine on WinXp (dual boot) so the device is not faulty. (laptop intel pro card, details is at bottom of this thread)
_ The network was normal, no heavy load (about ~10KB/s) so this eliminates network overloading.
_ Comparing to 9.04, the wifi signal is way weaker.
_ Happens on both WPA and WPA2 network.
_ This message appears in /var/log/messages every time the connection drops

[12819.337348] cfg80211: Calling CRDA to update world regulatory domain
[12819.344599] cfg80211: World regulatory domain updated:
[12819.344605] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[12819.344612] (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[12819.344619] (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[12819.344625] (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[12819.344631] (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[12819.344637] (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

_ Output hardware info

*-network
description: Wireless interface
product: PRO/Wireless 3945ABG [Golan] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:05:00.0
logical name: wlan0
version: 02
serial: 00:19:d2:d3:03:2c
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwl3945 driverversion=2.6.35-22-generic firmware=15.32.2.9 ip=192.168.0.107 latency=0 link=yes multicast=yes wireless=IEEE 802.11abg
resources: irq:45 memory:f8900000-f8900fff

[jshuford]

Try: Encore ENUWI-G2... Work's out of the box!

[ndxtg]

Try: Encore ENUWI-G2... Work's out of the box!

usb wireless stick is cool, but it's better if we can use our current wireless card that comes with the laptop

[jshuford]

I agree, but I am done "trying" to get WiFi working in ubuntu!

[gsoundsgood]

same problem here... connection basically works, but it disconnects you for no apparent reason for a few seconds, then it gets back working...

[ndxtg]

Now I can confirm that this is not a card nor network problem, it's Ubuntu's problem.

I have swapped it with a Atheros AR5001 card using 2 different drivers:

ath5k: still randomly disconnects and cannot re-connect unless reboot
ndiswrapper: using Windows driver - same symptom

so it's seem to be appeared on both Intel & Atheros cards (no matter which driver is used)


dmesg or /var/log/messages shows in loop: wlan1 is being reset

[Yeeha]

I have Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02), i was unable to connect or stay connected before too. What worked for me was: sudo rfkill block bluetooth. But that has to be done at every boot, i dont know how to make it permanent.

[bkratz]

Directions that will probably help you are in the response to this thread

http://ubuntuforums.org/showthread.p...7#post10097837

[Yeeha]

Atlast, thx!

[cruach]

Hi!

I have a similar problem - 10.10. Intel 3945ABG - with intermittent wireless. Boot under XP, no wireless problems.

But this only happens with one router. At home I use my landlord's wireless router - no problems under Ubuntu. Right now I'm visiting my parents, and I have the intermittent wireless problems with Ubuntu.

Any suggestions?
Thanks