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Posts Tagged ‘12.04’

If you’ve been getting blue faces when watching YouTube clips, or any other Adobe Flash videos, the cause can be hard to pinpoint. When faces and flames, and other red/orange elements, turn varying shades of blue, it can be due to a buggy Flash update (especially for 64-bit users), or it can be due to video card driver issues (currently it seems to be affects a few Nvidia users after upgrading to Ubuntu 12.04 – read more at the bottom). Whatever the cause, this issue usually drives people to uninstall Flash, then reinstall an earlier version.

But hopefully the following fix will correct the colours in the movies you watch in Firefox or Chrome (and any other web browsers) without having to resort to such drastic measures. All you need to do is create a text file and paste a line of text into it, but since saving it will fail unless you create the folder first, do so by running the following in the terminal:

sudo mkdir /etc/adobe/

Now to create the file and open it for editing:

gksu gedit /etc/adobe/mms.cfg

When it opens, paste in the following:

EnableLinuxHWVideoDecode=1

Close the file, and confirm you want to save the changes. Now, all you need to do is restart your browser and your clips should look fine. If not, you may need to reboot, and hopefully all is fine when you return.

The EASY WAY: Now that you understand what’s needed, you could cheat and just do the whole process with one command:

sudo mkdir /etc/adobe/ && echo -e "EnableLinuxHWVideoDecode=1" | sudo tee /etc/adobe/mms.cfg > /dev/null

If you also want to force the Flash player to bypass its GPU validity checks (GPU validation – see below), then the command would be:

sudo mkdir /etc/adobe/ && echo -e "OverrideGPUValidation=1\nEnableLinuxHWVideoDecode=1" | sudo tee /etc/adobe/mms.cfg > /dev/null

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That Didn’t Work, or Caused Problems? In some cases, you might find you need to disable GPU validation in addition to, or instead of, telling Flash to use vdpau hardware acceleration. If you’re experiencing trouble at some sites but not others (like YouTube videos are now fine, but at Vimeo the Flash plugin crashes), you may want to play around with the settings. For example, to enable the acceleration but bypass GPU validation, the text in mms.cfg would be:

OverrideGPUValidation=1
EnableLinuxHWVideoDecode=1

… or the following to just bypass GPU validation:

OverrideGPUValidation=1
EnableLinuxHWVideoDecode=0

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To Revert Back: If these tweaks have caused you more headache than it was worth, just delete the entire folder you created with:

sudo rm -r /etc/adobe

Or you can just edit the file with:

gksu gedit /etc/adobe/mms.cfg

… and set EnableLinuxHWVideoDecode= to 0 if you prefer to keep it.

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Nvidia users: Apparently the issue (which Adobe reportedly won’t be fixing) is caused by having hardware acceleration enabled, so right-clicking a Flash video, choosing Settings… and disabling “Enable hardware acceleration” can often fix this. However, the above fix is perhaps more elegant since you’re allowing Flash to use vdpau hardware acceleration, rather than just disabling it altogether.

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If you’re a Gnome 3 Classic (“Fallback“) desktop user, you may have noted that there’s no longer any visible way to get to your Startup Applications. This is made even more frustrating by the fact that after the upgrade to 12.04, Unity users get easy access to it via the system menu at the end of the panel.

While this oversight could do with correcting, you can still access Startup Applications by entering the following command in Run Application via Alt+F2, or in the terminal:

gnome-session-properties

While running this via the user menu would be ideal, you could make a desktop launcher for it, or even one for your panel which would mean one-click access.

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Did this information make your day? Did it rescue you from hours of headache? Then please consider making a donation via PayPal, to buy me a donut, beer, or some fish’n’chips for my time and effort! Many thanks!

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Please note: this is an updated version of the guide for restoring the volume button in Ubuntu 10.04/Gnome 2, and is specifically for those using the Gnome 3 “Classic” (Fallback) desktop (though may be applicable for Gnome-Shell and Unity).

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If you’ve just upgraded to 12.04 “Precise Pangolin” and found that the volume icon/button is missing from the system tray (at the far-right of the top Gnome panel), you can choose between adding the newer indicator applet, or running the old stand-alone volume button like back in Gnome 2. With the indicator applet, it will load automatically with each boot, but it doesn’t take much to get the legacy volume button to do the same.

Volume Button:

Note: Those who’ve had to do this before in Ubuntu 10.04 through to 11.10 will have noted the package gnome-volume-control-applet no longer exists, but since it has just been renamed, all you need to do is change the command to gnome-sound-applet.

To run it for the current session, hit Alt+F2 to open the Run Application app, paste gnome-sound-applet into the text field, and click the Run button (you can also enter the command into a terminal, but the button will disappear if you close the terminal).

To get it to start automatically from the next reboot, click the cog in the top-right (in Unity) and open Startup Applications and add it as a new entry with a name like “Volume Button”. If you’re using Gnome Classic, your user menu in the top-right won’t include Startup Applications, so just run gnome-session-properties via Alt+F2 or in a terminal.

If for some reason the volume app is missing on your system, run sudo apt-get install gnome-sound-applet in the terminal.

Indicator Applet:

Alt+Right-click an empty area of the panel (if you have Compiz effects enabled, then you will need to hold Alt+Super/Windows while right-clicking), choose Add to Panel, then drag Indicator Applet Complete to next to the clock in the system tray, or wherever you want to put it instead. The volume button will be restored, but as part of the Indicator Applet which also has a mail/message notifier for Evolution and messaging apps, as well as showing when other apps like Rhythmbox music player are open.

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Did this information make your day? Did it rescue you from hours of headache? Then please consider making a donation via PayPal, to buy me a donut, beer, or some fish’n’chips for my time and effort! Many thanks!

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If you’ve been looking at reviews of Ubuntu 12.04, you may have noticed mention of the new app in System Settings, “Privacy“. With it, you can delete the history of your activity recorded by Zeitgeist, and even turn the “Record Activity” feature off, or just exclude certain types of files – like images, emails, and even websites – or simply tell it to exclude certain folders.

If you upgraded, however, you may find the Privacy app doesn’t exist on your machine. But fret not, as it’s really simple to rectify this.

Simply open a terminal, and paste the following:

sudo apt-get install activity-log-manager-control-center

That’s it – now when you go to System Settings, you’ll find Privacy in the Personal section.

To clear your history, go to the Recent Items tab and click the “Delete history” button.

If you want to exclude certain programs, go to the Applications tab and add them with +.

To exclude certain types of files and/or specific folders, you’ll find what you need in the Files tab.

And of course, if you’d rather just stop logging of your activity, set “Record Activity” to OFF.

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Did this information make your day? Did it rescue you from hours of headache? Then please consider making a donation via PayPal, to buy me a donut, beer, or some fish’n’chips for my time and effort! Many thanks!

Buy Ubuntu Genius a Beer to say Thanks!

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