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Bug 432992 - Alt-Tab cycling between windows shows only black until selection is done
Alt-Tab cycling between windows shows only black until selection is done
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: metacity (Show other bugs)
x86_64 Linux
low Severity low
: rc
: ---
Assigned To: Owen Taylor
Depends On:
  Show dependency treegraph
Reported: 2008-02-15 11:48 EST by Jerry Quinn
Modified: 2009-10-19 17:06 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2009-10-19 17:06:21 EDT
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Regression: ---
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RHEL 7.3 requirements from Atomic Host:
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Description Jerry Quinn 2008-02-15 11:48:34 EST
Description of problem:

When I use Alt-Tab to select a new window, the new window is completely black
until I release the Alt key.  This means that if I have a bunch of, say, browser
windows, I can't see the contents of the window until I select it.  If I'm
cycling through the windows, only the one I'm about to select is black - the
others all appear normal.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Hold Alt
2. Press Tab once or more
Actual results:

Windows are successively selected, brought to the front, but filled with black

Expected results:

The selected window should show its current contents

Additional info:

This is the only Linux installation I've seen where this doesn't work.
I have the nvidia driver 169.09 installed.  One other note is that the SHAPE
extension is currently disabled (the installation process did this).
Comment 1 Owen Taylor 2009-10-19 17:06:21 EDT
The shape extension is required for the correct operation of Metacity - the black border used to highlight the position of the selected window is a window shaped to be a thin frame using the shape extension. Without the shape extension, the effect will be as you describe - a large black rectangle.

I'm not sure how you ended up with the SHAPE extension disabled - it sounds like perhaps it was related to the installation of the NVIDIA driver in some way. If you believe that there is a way of installing RHEL that ends up with the SHAPE extension configured off, feel free to describe the installation process you followed and reopen this bug and I'll try to reassign it appropriately.

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