[ubuntu] Nvidia Driver Random Freeze

13 02 2011

After my recent update (7th Feb 2011), I have been facing issues with Ubuntu Lucid (10.04), where it randomly does one (or all) of the below:

  • display goes ‘fuzzy’ or ‘freezes’,
  • the mouse can still move for a while at least.
  • mouse freeze
  • keyboard does not respond

If i am patient enough, I can wait and everything should be fine in 30 seconds. Sometimes if i am lucky, i get to use my system for 5 minutes before the whole thing repeats itself. Irritating, isn’t it?

Well…. i do have low tolerance for this kind of issues, it is unacceptable in so many levels, right? Thus, i went around surfing the net for a solution, and i have tried the below but it does not help:

  • update / upgrade everything that is possible
  • reinstall the Nvidia drivers
  • install the latest Nvidia driver
  • change Nvidia driver & preferences
  • upgrade to Ubuntu Maverick (10.10)
  • modify codes related to the my USB keyboard and mouse
  • disable display effects: smooth fonts, visual effects… etc

After many re-installations of Ubuntu Maverick and trying out settings above, I am finally convince that the whole shebang is due to the Nvidia drivers and Xorg incompatibility. In the end i just did the simplest thing possible: DISABLE THE NVIDIA DRIVER

  • System > Administration > Additional Drivers (Restricted Drivers)
  • Click on the activated Nvidia driver
  • Click on the ‘remove’ button towards the right bottom

Yes, it will disable all the fancy visual effects, but i get a stable system that does not randomly hang for the last 24 hours. And it is  better for me this way, at least. That’s my take.





[ubuntu] Lucid Lynx, 10.04 Cisco VPN

28 05 2010

For those who recently upgraded to Lucid Lynx, and the vpn client seems to have broken when and you get the error below:

Starting /opt/cisco-vpnclient/bin/vpnclient: insmod: error inserting ‘/lib/modules/2.6.32-22-generic/CiscoVPN/cisco_ipsec.ko’: -1 Invalid module format
Failed (insmod)

The solution is rather simple, you just need to uninstall your vpn client and reinstall it again instead of install over the old version. Simple and effective to me 😀

For those who is trying to get the Cisco VPN up and running, head to this page and read all about how to do it.





[ubuntu] Lucid Lynx Wireless Keep Dropping (updated)

10 05 2010

After enduring the endless wireless disconnection after upgrading to Ubuntu 10.04 (Lucid Lynx) I have finally found the solution!

The symptoms I was seeing is as such:

  1. connected
  2. after using for 5 minutes to 10 minutes, the wireless network manager get disconnected
  3. only wireless connection selectable is the last network you connect to
  4. unable to re-connect, even after 10 minutes
  5. you must disable the wireless and enable it before you can try to reconnect…
  6. then back to step 1

The steps below worked for me 🙂

  • sudo gedit /etc/NetworkManager/nm-system-settings.conf
  • set the “[ifupdown] managed=false” to true.

Although the above changes reduced the frequency of the wireless drop, but I am still facing it. After thinking it around a bit more, it’s more stable now. Below are what I have done:

  • sudo gedit /etc/NetworkManager/nm-system-settings.conf
  • Changed the file to:

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true

[ifdown]
managed=true

[ifup]
managed=true

Good luck to you! And have fun with Lucid Lynx. Let me know if this works or if there are other better fix!

Added on June 28, 2010:

With with the fixes above, it has only lessen the problem on my machine and not totally eliminate it. Thanks for the comments on trying out wicd, which i did give it a try. BUT although the wireless connection didn’t drop at all for the 2 days which i have been using it, i see a cap on the wireless transmission rate of 60KB/s (even after trying “sudo iwconfig wlan0 rate 54M”, which is not the problem). This is not acceptable to me, which is why i sent back to using gnome network manager, but for those of you who want to try out wicd, below are the commands:

sudo apt-get install wicd

sudo apt-get remove network-manager

Drop me a message if you have a solution to the transmission rate cap!





[ubuntu] Getting WebEx to work on 10.04

8 05 2010

Found out that WebEx is not working in the latest and greatest version of Ubuntu (Lucid Lynx, 10.04). After some digging around, it seems that Java from Sun is not installed by default, and Ubuntu has OpenJDK & IcedTea as the default Java plugin in Firefox. AND WebEx don’t play nice with IcedTea.

Below are the lines I have used in a terminal to get WebEx working 🙂

sudo apt-get remove icedtea6-plugin
sudo add-apt-repository "deb http://archive.canonical.com/ lucid partner"
sudo aptitude update
sudo aptitude install sun-java6-jdk
sudo update-alternatives --config java
sudo apt-get install sun-java6-plugin

Good luck! And let me know if I might have missed out anything 😀





[ubuntu] 10.04 update

7 05 2010

There is an update today for Lucid Lynx, 10.04, and it solves most of the slow internet problem for me.

Firefox runs better, the slow wireless problem is fix by default…. and wireless connection doesn’t drop so easily. So, for those of you who hasn’t updated it yet… go ahead. It’s highly recommended.

Now I will have to go try out some of the other essential programs like Skype 😛





[ubuntu] Skype Crashes After Upgrading to 10.04

5 05 2010

Just to share the fix with the masses 🙂

My Skype keep crashing when trying to open an instant messaging window after the recent upgrade to Ubuntu 10.04, Lucid Lynx. Moreover the sound quality is sporadic. The short answer to the issue is…. re-install skype 😀





[ubuntu] Slow Wireless after Upgrading to 10.04

4 05 2010

I have recently upgrade to Ubuntu 10.04 a.k.a. Lucid Lynx, and have notice a significant drop in wireless speed. After dabbling about for a while and doing some google search, I have come to the answer 😛

Just run the command below and restart, and all should be well:

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

update [8th May 2010]: the latest update from Ubuntu has this by default. A quick update should solve the problem 😀

update[10th May 2010]: If you face problem with your wireless connection keeps dropping, and unable to connect back, please refer to my other blog post

BTW, if you have a CD/DVD in the CD/DVD drive, please remove it then restart. Else you might see the ksoftirqd/0 process hogging nearly 100% of your CPU.

Please refer to [ubuntu] Lucid Lynx Wireless Keep Dropping (updated) for more updates. I will be updating the post as i find out more solution on the issue.