Can not connect to internet for more than a couple minutes with Ubuntu 9.04

klmurphy · 05-05-2009, 05:42 AM

I'm new to Ubuntu and Linux. I cannot connect to the internet wirelessly for more than 1-2 minutes. After that it the internet stops working (but it says I'm still connected...) Here's my lspci report...

keith@keith-laptop:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c)
00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 0c)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA IDE Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation GeForce 8600M GT (rev a1)
04:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02)
0c:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
0e:06.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
0e:06.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
0e:06.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
0e:06.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev ff)

Using the "System Testing" tool it shows that the following is my network devices.

Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02)
Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)

I'm using the Wireless connection.

Help!

irishbitte · 05-05-2009, 12:28 PM

Just out of curiosity, is the machine working on the ethernet (wired) connection?

irishbitte · 05-05-2009, 12:33 PM

This is from the ubuntuforums: http://ubuntuforums.org/showthread.php?t=969178

Quote:

Re: Intel Corporation PRO/Wireless 4965 AG or AGN
_______________________________________________________________
been trying to get my wireless working. i'm using acer 5920g. tried upgrading from 8.04 to 8.10 as well as fresh installation but failed. problem solved after installing linux-backports-modules-intrepid package. thanks everyone!

If your wired ethernet connection is working, can you give this solution a go? It involves the following steps:
1. Edit /etc/apt/sources.list and un-comment the lines relating to backports
2. use the commands:

Code:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install linux-backports-modules-jaunty

3. Reboot
4. Attempt to configure network settings using the network-manager applet in the top right of your desktop.

Can you let us know how you get on?

irishbitte · 05-05-2009, 12:39 PM

Another interesting post: http://linux.derkeiler.com/Mailing-L.../msg01632.html this persons experience was a hardware problem, and that may well be the issue!

irishbitte · 05-05-2009, 12:44 PM

Having exhausted all the above, please try this:

Code:

sudo modprobe -r iwlagn && sudo modprobe iwlagn 11n_disable=1

and reboot. But only try this if the above does not work!

klmurphy · 05-05-2009, 02:41 PM

This is strange. It's working now. Really well in fact. I did not do the above steps. I have no idea what changed!

:shrug:

If I have more problems I'll try the above and post again. For now, I'll begin enjoying Ubuntu!

irishbitte · 05-05-2009, 03:33 PM

Did you accept an automated system update? Something like this: http://thoughtmenagerie.files.wordpr...ntu-update.jpg, if so, the bug on your hardware drivers may have been fixed in jaunty.

klmurphy · 05-05-2009, 03:34 PM

Quote:

Originally Posted by irishbitte

Did you accept an automated system update? Something like this: http://thoughtmenagerie.files.wordpr...ntu-update.jpg, if so, the bug on your hardware drivers may have been fixed in jaunty.

Yes but it was a video driver and a modem driver. Maybe it resolved a conflict of some sort?

irishbitte · 05-05-2009, 03:37 PM

Maybe, to be honest I'm not exactly certain. I have seen this kind of thing happen over and over with ubuntu in the run into and following a release! It can be a bit annoying, but in fairness they generally get there.

klmurphy · 05-06-2009, 09:21 AM

Just an update, back to not working. I'll try the above and post my findings when I get a chance.

If it helps. I booted up Ubuntu and my keyboard and mouse didn't work. Rebooting fixed that problem. Maybe there's a boot sequence that doesn't always load up correctly?

klmurphy · 05-06-2009, 09:51 AM

Quote:

Originally Posted by irishbitte

This is from the ubuntuforums: http://ubuntuforums.org/showthread.php?t=969178

If your wired ethernet connection is working, can you give this solution a go? It involves the following steps:
1. Edit /etc/apt/sources.list and un-comment the lines relating to backports
2. use the commands:

Code:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install linux-backports-modules-jaunty

3. Reboot
4. Attempt to configure network settings using the network-manager applet in the top right of your desktop.

Can you let us know how you get on?

I'm unable to test the ethernet connection at this time. So I thought I may move onto this step.

I found the file you're speaking about (step 1), and tried to comment out the two lines referring to backports. I couldn't save them because I didn't have sufficient permissions. As far as I know I have administrative rights on this computer... so I wasn't sure why I couldn't save the file.

I was able to double click on sources.list and that opened the SOFTWARE SOURCES window. I found the tab called UPDATES and under that I checked the backports checkbox (UNSUPPORTED UPDATES).

That's when I realized I needed working internet connection to do that.

klmurphy · 05-06-2009, 06:35 PM

And now when I boot up Ubuntu, put in my name and password and get a black screen. Help!

irishbitte · 05-06-2009, 08:09 PM

Sounds to me at this stage, you'd be better using a LiveCD to copy off all relevant files, and reinstalling ubuntu. If you're getting weird errors like what you're showing it seems to be that modules are not getting loaded into the kernel at boot time, and that is definitely beyond my expertise! If you wanna go down this road, I can post detailed instructions.

klmurphy · 05-07-2009, 07:21 AM

My concern is will I lose all the files on that drive?

linuxlover.chaitanya · 05-07-2009, 07:51 AM

Unless you format the drive or in some way destroy the hard drive you can always use Live CD and backup your data.
The issue with you was that you were trying to change the system files and by default no user is root user in Ubuntu. If you need to perform some admin task then you will have to use that command with sudo that will give you temporary super user rights.
About you getting a blank screen, I can not say much for I did not understand the problem completely.