Garbage left on screen in 14.04

John Hupp lubuntu at
Sat May 31 16:14:38 UTC 2014

On 5/31/2014 8:10 AM, Israel wrote:
> On 05/30/2014 11:46 PM, c. marlow wrote:
>> Hello,
>> I am starting to see garbage left on my screen like the picture below
>> That garbage left on the screen ( that clear box) was from me closing
>> a terminal window
>> Any ideas why?
>> And the only way to get it off the screen is open another program a
>> few times and it clears up on its own.
>> This is a fresh install from 12.04 to 14.04 I reformatted the pc to 14.04
>> Thanks,
>> Christopher
> Hi,
> I like your background, it is very epic!
> What kind of graphics card do you have?
> If you don't know you can run this command in a terminal
> lspci | grep VGA
> Did you install a proprietary driver for it?
> Do you have a compositor running (like xcompmgr or compton, etc...)?
> If you disable the drop shadows on the windows does it still leave the
> shadow?
> And finally have you updated you computer fully?
> sudo apt-get update && sudo apt-get -y install

I have seen perhaps the same behavior on several machines and also in a 
VMWare Player box.  In my case the rectangle is always drawn by the 
movement of the pointer (like making a selection in a paint program).

In the VMWP box, the rectangle is always translucent.  (Not 
surprisingly, the card there is "VGA compatible controller: VMWare SVGA 
II Adapter.")  Sometimes I can click outside the rectangle, it goes 
away, and I can continue.  I think sometimes that doesn't work and the 
pointer becomes ineffective for selecting/opening/running. I have been 
able to make that go away and regain control by switching to a different 
console and back (e.g. Ctrl-Alt-F1, Ctrl-Alt-F7).  Sometimes the arrow 
pointer becomes a hand, and I recall that if that happens I never regain 
control except by switching consoles.  No proprietary driver, no 
compositor.  And a default installation (like this one) doesn't have 
drop shadows, does it?  I have just now installed ~ 72MB of updates, so 
we'll see.

I have seen the rectangle (but not the hand pointer) on an HP Pavilion 
a720n with:
AMD Athlon XP 3200+
VIA UniChrome graphics with 64MB shared memory
(And I don't have current access to this machine.)

I have also seen the rectangle (but not the hand pointer) on a Dell 
Dimension 4300 with:
P4 @ 1.6GHz
nVidia 64MB GeForce2 MX
(And I don't have current access to this machine.)

On that last machine the rectangle is fuzzy inside instead of translucent.

The last machine also suffers from other graphics anomalies that I wrote 
about earlier ("14.04 Look and Feel: many items are VERY faint") and in 
reply Leszek Lesner wrote:

    The nvidia-96 are simply so old that they won't work with the
    current kernel that's one of the reasons it was not shipped I guess.
    What actually might work very good for 2D acceleration is the old nv
    But that seems not to be packages for Ubuntu 14.04.
    The only source I know where to get it is at launchpad:
    I guess installing won't be enough. It needs removal of nouveau
    driver or blacklisting.

    The Nouveau driver has known issues with very old cards like this
    one. That's the only reason I would recommend the old nv open-source

This issue with the rectangles is something I'd like to see explained 
and hopefully solved, but to date other issues have seemed more pressing.

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