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I've just installed Ubuntu 16.04 along with Windows in a dual boot. I have an HP Pavillion dv6000 with an Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection and my driver is iwl3945. Even on my first try to boot Ubuntu the sign on the wifi sign blinks from red to blue, which is a sign that my internet connection is not stable. After a while, I lost Internet connection completely(even wired one) the WiFi sign is now constantly red.

However, the sign up and right of the screen still shows I have Internet. If I switch off the WiFi switch and then switch it on again,it shows no enable wifi option(in fact I cannot select it).

Please do you have any idea? No matter how much I've searched on the Internet I couldn't find something helpful. I'm new on ubuntu so please be lenient.

Here is the output of the lspci -nnk | grep -iA2 net

02:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02)
Subsystem: Hewlett-Packard Company PRO/Wireless 3945ABG [Golan] Network Connection [103c:135c]
Kernel driver in use: iwl3945
Kernel modules: iwl3945
08:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.       
RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 01)
Subsystem: Hewlett-Packard Company Pavilion dv6700 [103c:30cc]
Kernel driver in use: r8169
Shashanth
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rolandofshire
  • 31

2 Answers2

0

Try the following first:

sudo rmmod -f iwl3945
sudo modprobe iwl3945 disable_hw_scan=0

If it solves the problem, run the following to make it permanent:

echo "options iwl3945 disable_hw_scan=0" | sudo tee /etc/modprobe.d/iwl3945.conf
mikewhatever
  • 32,638
0

Donload iwlwifi-3945-ucode-15.32.2.9.tgz from here:

wget https://wireless.wiki.kernel.org/_media/en/users/drivers/iwlwifi-3945-ucode-15.32.2.9.tgz
tar xvf iwlwifi-3945-ucode-15.32.2.9.tgz
cd iwlwifi-3945-ucode-15.32.2.9

Copy the firmeware to your /lib/firmware:

cp iwlwifi-*.ucode /lib/firmware

Reload the driver:

modprobe -r iwl3945
modprobe iwl3945
GAD3R
  • 3,507
  • Thanks but when I try to copy the firmware it says cp: cannot create regular file '/lib/firmware/iwlwifi-3945-2.ucode': Permission denied – rolandofshire Aug 06 '16 at 06:17
  • Run it with sudo. – Pilot6 Aug 06 '16 at 07:46
  • OK I did that but nothing changes. It seems that it cannot recognise modprobe iwl3945 after modprobe -r iwl3945. But I ran rfkill unblock all and the switcher turns to constantly blue, instead of constantly red. But it still says at the networks settings that the device is not ready. Any idea? – rolandofshire Aug 07 '16 at 05:54