To stop Firefox from prompting you to install Flash Player type about:config in the address bar and then press Enter. Confirm the exception:
Search for plugins.notifyMissingFlash and set it to false by double clicking it.
After using Ubuntu 11.4 (Natty) for a while I’ve decided to install Linux Mint 9 Isadora (which is built on Ubuntu 10.4 (the last Long Term Support release)). In the end Natty and Unity did not seem polished enough to me (so I will revisit Unity with subsequent releases to see how it is progressing).
I did like the almost full-screen browsing experience that Natty delivered as well as the ability to sync files, contacts and Tomboy Notes with Ubuntu One. With this in mind Mint 9 seemed like a good choice – I liked that it only featured one panel at the bottom of the screen and the Mint menu is well thought out. Add to that the fact that things like Flash are already installed and that I can type directly into the Mint menu to search for installed software and I was sold.
I installed Mint 9 on two machines this week and was surprised when one of them reported that Flash was out of date (in both Firefox and Chromium). I checked Update Manager and tried re-installing flashplugin-nonfree to no avail.
I soon found a fix on the Ubuntu Forum though, which cleans up possible conflicting versions of Flash that might be installed and then re-installs flashplugin-nonfree from the repositories:
sudo apt-get purge lightspark sudo apt-get purge swfdec-mozilla sudo apt-get purge mozilla-plugin-gnash sudo apt-get purge adobe-flashplugin sudo apt-get purge flashplugin-nonfree sudo apt-get purge flashplugin-installer rm -f /home/**/.mozilla/plugins/*flash*so rm -rf /home/**/.wine/dosdevices/c:/windows/system32/Macromed/Flash sudo rm -f /usr/lib/firefox-addons/plugins/libflashplayer.so sudo rm -f /usr/lib/mozilla/plugins/libflashplayer.so sudo apt-get install flashplugin-nonfree sudo ln -s /usr/lib/mozilla/plugins/flashplugin-alternative.so /usr/lib/firefox-addons/plugins/libflashplayer.so
This glitch aside I am quite impressed with Mint so far – it has a great selection of applications and is quite user friendly too.
There are plenty of posts online about issues with sound when trying to play Flash video on YouTube with Firefox. I encountered this issue today on a fresh install of Ubuntu 10.4 Lucid and managed to fix it without too much difficulty.
I had just installed Ubuntu but had not bothered to run Update Manager yet – so my first piece of advice is to update your system and reboot (if it is not already up-to-date).
I then installed the Flash-Aid Add-on in Firefox. Flash-Aid allows you to uninstall and install various instances of Flash (or Linux equivalents) via a graphical interface. Click Tools, Add-ons, Get Add-ons and then search for Flash Aid and install the Add-on.
Restart Firefox and then click Tools and Add-ons again. Select the Flash-Aid add-on and then click the Preferences button.
I decided to uninstall Flash completely and start over – so I clicked the Expert Mode check-box at the bottom of the Flash Aid window and then clicked the Removal Options tab.
I selected everything that I had possibly installed previously and then clicked the Installation Options tab. Here I selected Adobe, from repositories.
Then I simply clicked the Script Preview tab followed by the Execute button – this ran the uninstall scripts followed by the installation script.
After this I still did not have sound working on YouTube – but running Update Manager and rebooting the computer fixed the issue.
Flash-Aid is a great tool for quickly and easily managing the version of Flash that you wish to use.