Ubuntu – Wireless problems with Atheros AR9285

10.10ath5kdriverswireless

I have a Samsung N210 and just installed Ubuntu. I'm new to Linux and I have some problems.

I'm using Linksys WRT110 Router. When I'm connected via ethernet cable everything's fine but when I unplug the cable and try to use wireless it's really problematic. The connection is unstable. I can use the internet for 5 minutes and then for a couple minutes it's gone and it comes back again and so on. But the thing is, it always shows that it's connected, but I can't connect to any websites. As I said, no problems with ethernet cable.

I made some research, installed Samsung-tools (and then came here to ask) and Realtek 8192E wireless driver for the latest kernel for Samsung netbooks with no luck. Also I uninstalled Network Manager and installed wicd, that didn't work either. What may be the problem?

Here is the output of the lspci command:

00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge
00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller
00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 4 (rev 02)
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation N10/ICH7 Family SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
05:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
09:00.0 Ethernet controller Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller

Thanks in advance for all the suggestions.

P.S.: When I open System > About Ubuntu, it says "You are using Ubuntu 11.04 – the Natty Narwhal – released in April 2011 and supported until October 2012." Why does it say 11.04? And April 2011, huh?

Best Answer

Your information states that you have an Atheros 9285 wireless card, not a realtek.

Plug into the ethernet and install linux-backports-modules-wireless-maverick-generic

sudo apt-get install linux-backports-modules-wireless-maverick-generic

and then reboot.

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I got it working on 16.04 on this machine following this guide but it had some problems with the links so here's exactly what I did...

(first you may want to navigate to an empty folder because we'll do some downloading & compilation & conversions. Files will be all over the place)

mkdir temporary
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now we've created a folder and navigated to it we can proceed...

First, download this and place it in your empty folder.

The guide's very long but what's good about it is that it should work if you just follow it sequentially. If you don't understand what's happening just copy and paste the lines one after the other (or ask in a comment)

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make
sudo checkinstall -install=no make install
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Install fprint_demo

cd ../..
sudo apt-get install libgtk2.0-dev
tar xf fprint_demo-0.4.tar.bz2
cd fprint_demo-0.4
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make
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At this point, we can start to register our fingers.

sudo /etc/init.d/vcsFPServiceDaemon start
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...after you enroll your finger you can train in the "identify" tab. It'll display your fingerprint! It's so much fun :D sometimes I just go there and keep swiping XD

And just a side-note, don't take screenshots of your finger and share it around unless of course, you know what you're doing. Your fingerprint is valuable. Better keep it for your eyes only.

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Anyway, we need to edit the /etc/pam.d/common-auth file. Be careful with this file!!. If you mess it up you'd have to fix it from recovery mode.

This would make ubuntu ask you for your fingerprint or your password to grant you root access and also for login. So you can still use your password to login

sudo nano /etc/pam.d/common-auth

We need to add the lines:

# fingerprint authentication through fprintd
auth    sufficient                      pam_fprint.so

and modify the line that has pam_unix.so nullok_secure try_first_pass to make it sufficient, like this:

auth    sufficient      pam_unix.so nullok_secure try_first_pass

So finally here's what my file looks like.

Note that the behavior will depend on where you'll place the lines. If you place them above (the "Primary" block) part it'll first ask you for your fingerprint, then your password and vice-versa.

I hope someone can clarify or give a good pointer about how this file exactly works.

Finally...

cd ..
sudo cp vcsFPServiceDaemon /etc/init.d/
sudo update-rc.d vcsFPServiceDaemon defaults

and things should be working.

Best Answer

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