[SOLVED] “BADSIG 40976EAF437D05B5” when reloading package lists in Synaptic/apt/update-manager in Ubuntu 10.04 Lucid Lynx

I am using Ubuntu 10.04 Lucid Lynx Beta 1 and got the following set of warnings while updating my package lists

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://archive.ubuntu.com lucid Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key 

W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/lucid/Release  

W: Some index files failed to download, they have been ignored, or old ones used instead.

This was preventing the package list updates and hence preventing package updates. I don’t know what caused this or when exactly I started to get these, but I guess it was after I changed my packages server from np.archive.ubuntu.com to archive.ubuntu.com.

Anyways, I managed to fix it by (re)moving all the old package lists and updating again. This can be summed up in the following three lines of terminal commands:

sudo mv /var/lib/apt/lists /var/lib/apt/lists.old
sudo mkdir -p /var/lib/apt/lists/partial
sudo apt-get update

This did it for me. Hope it does it for you too.

[HOWTO] Downgrading from Ubuntu 10.04 Lucid Lynx to 9.10 Karmic Koala

I was wondering if we could downgrade from Ubuntu 10.04 Lucid Lynx Alpha to Ubuntu 9.10 Karmic Koala. So I decided to put it upon test and I succeed. So, I am sharing this with those who wish to keep using stable Karmic Koala till the final version of Lucid is out.

Please note however, that all the installed applications will be lost, however the settings and files in your home directory will be preserved. So, for example if you have a huge list of saved sites on your Filezilla client, Filezilla will be gone, but when you install Filezilla on your Karmic, the settings should work. Also, your Firefox browsing history, preferences and other settings will also be preserved.

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[SOLVED] Gtk-Message: Failed to load module “rgba”: librgba.so: cannot open shared object file: No such file or directory

I had enabled the ppa

ppa:erik-b-andersen/rgba-gtk

and upgraded and installed nautilus, murrine-themes , gtk2-module-rgba and gtk2-engines-murrine to enable rgba transparency in my Ubuntu 10.04 Lucid Lynx Alpha. That looks really cool. It was supposed to be coming with Lucid, but was dropped due to bugs. The programs started crashing for me too. I was done with adding exceptions to /etc/profile.d/gtkrgba.sh because almost every new program crashed. So I decided to remove the rgba module altogether. Just removing the repository does not help. So, here are the removal instructions.
Find and removing the PPA Packages and installing original versions:
Open up synaptic. Make sure you have not disabled the rgba repository.
Click on “Origin” in the lower left of Synaptic and in the upper left pane, select LP-PPA-erik-b-andersen-rgba-gtk/lucid.
Now, the packages installed via the repository can be seen in the main window of synaptic.
Select gtk2-engines-murrine and click on Package>Force Version and choose non-ppa version. Repeat the same for libnautilus-extension1, murrine-themes and nautilus.
Mark gtk2-module-rgba for removal.
Apply the changes.
Now, you can safely remove the PPA repository.
Remove the rgba module listing from profiles:
Even after the removal of ppa versions, you will still get a message

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[HOWTO] Auto Re-Connect to dsl pppoe in Linux

I am using Ubuntu 10.04 Lucid Lynx Alpha. I have a dsl connection (WiZoom, Wireless via ubnt but wired to my PC) from Worldlink Pvt. Ltd., Nepal. I need to connect via pppoe. I occasionally keep my PC to download overnight while I sleep or even when I am away. It works well with torrents (with deluge as my torrent client, I haven’t used transmission torrent client much) but sometimes it disconnects from the internet. So, I had to configure it to auto re-connect on disconnect. It should also connect on logon. Since network manager does not meet my requirements, I had to delete the DSL connection from my network manager (which I had configured to connect at logon). Then I would need to configure pppoe connection via pppoeconf. To do so, I bring up my terminal and type in:

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[HOWTO] Moving Gnote Notes to Tomboy and vice versa

I had moved to Gnote from Tomboy notes in my Ubuntu 10.04 Lucid Lynx Alpha because I wanted to free some space by removing mono (I don’t play gbrainy and I do not have a photo collection in my PC :)).

However, I have been facing crashes with Gnote recently. I updated to latest version of Gnote from the PPA with no success. I get the following error when I try to launch Gnote version 0.7.1-1ppalucid3 from the terminal:

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[HOWTO] Video Wallpaper on Ubuntu 10.04 Lucid Lynx with Shantz XWinWrap

I wanted to try out video wallpaper (like DreamScene on Windows 7). I had tried XWinWrap with Hardy but back then, I had problems running Compiz on an old PC and it did not look good at all. Now, I am trying it out on a new PC and Compiz works well on my onboard Intel GMA 3000 on Ubuntu 10.04 Lucid Lynx Alpha.

If you want to try this, you must have compiz enabled. You may also want to install mplayer and codecs for videos you want to use as desktop background.

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[HOWTO] Cleaning Ubuntu for better performance and privacy

When I used Windows, I had come across several “system cleaners and optimizers”. One I liked was CCleaner (Crap Cleaner). It had a nice interface and was capable of cleaning cache and data of several applications.

I found a similar application for my Ubuntu 10.04 Lucid Lynx Alpha. It has similar interface and features. It is called bleachbit and can be installed via Synaptic (universe repos need to be enabled) and can be accessed from Applications>System Tools>Bleachbit. It is also capable of wiping the data so that it is impossible(or lets say difficult) to recover. It can also clean backup files (those hidden with ~ at the end of the filename, .bak, .tmp and more) with Deep Scan.

[SOLVED] Gtk-Message: Failed to load module “gnomenu-panel”

I am using globalmenu 0.7.9 (Mac OS X like Global menu for Gnome) from the globalmenu-team PPA (Karmic as Lucid is not available now) in my Ubuntu 10.04 Lucid Lynx. I get the following error on terminal when I try to launch any gtk applications from the terminal:

Gtk-Message: Failed to load module "gnomenu-panel": libgnomenu-panel.so: cannot open shared object file: No such file or directory
Gtk-Message: Failed to load module "globalmenu-gnome": libglobalmenu-gnome.so: cannot open shared object file: No such file or directory


However, the gnomemenu-panel works fine, I wanted these messages to not appear.
I opened up /usr/lib/gtk-2.0/modules and found that the plugin had different files than listed in the error message. To fix the problem, I just created symbolic links to the existing files. This is how I did it from the terminal:

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[SOLVED] ‘Murrine configuration option “scrollbar_color”, “gradients” is no longer supported and will be ignored.’

I am using balazan theme in Ubuntu 10.04 Lucid Lynx Alpha 4 from breathe ppa for Karmic Koala since Lucid PPA was not available when I started using Lucid. I saw this message when I launched gedit from terminal (gnome-terminal):

/usr/share/themes/balanzan/gtk-2.0/gtkrc:89: Murrine configuration option "scrollbar_color" is no longer supported and will be ignored.
/usr/share/themes/balanzan/gtk-2.0/gtkrc:93: Murrine configuration option "gradients" is no longer supported and will be ignored.


Seems like the theme I’m using has some depreciated configuration options after Murrine update. I opened the /usr/share/themes/balanzan/gtk-2.0/gtkrc file (as root) using the following command from Alt+F2

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