Bug 504595 - Sometimes alt+tab shows just icons where window contents are available
Sometimes alt+tab shows just icons where window contents are available
Status: RESOLVED FIXED
Product: metacity
Classification: Other
Component: Iain's compositor
2.21.x
Other Linux
: Normal normal
: ---
Assigned To: Metacity compositor maintainers
Metacity compositor maintainers
:
Depends on:
Blocks:
  Show dependency tree
 
Reported: 2007-12-20 04:30 UTC by Patryk Zawadzki
Modified: 2008-04-30 23:19 UTC (History)
1 user (show)

See Also:
GNOME target: ---
GNOME version: 2.21/2.22

Attachments
Incorrect shadow rendering on new windows (218.87 KB, image/png)
2007-12-20 04:30 UTC, Patryk Zawadzki 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Description Patryk Zawadzki 2007-12-20 04:30:15 UTC 
Seems hard to reproduce but this happened to me a couple of times today:

1. Open a new window
2. Windows displays correctly
3. Hit alt+tab
4. Only icon (no thumbnail) is present
5. Switch desktops forth and back again
6. Hit alt+tab
7. Thumbnail appears correctly

It seems obvious that since the window is visible, it's contents should be abailable to the compositor.

Also, when trying to reproduce the above, another visual glitch appeared, see attachment and tell me if it's worth to file a bug.
Comment 1 Patryk Zawadzki 2007-12-20 04:30:56 UTC 
Created attachment 101296 [details]
Incorrect shadow rendering on new windows
Comment 2 Patryk Zawadzki 2007-12-20 04:32:38 UTC 
For the original bug, see:

http://flickr.com/photo_zoom.gne?id=2122872443&context=set-72057594056467726&size=o

In that screenshot it's clearly visible that the window is on screen and thus managed by metacity. Still, alt+tab does not have a thumbnail available.
Comment 3 iain 2007-12-20 12:04:04 UTC 
(In reply to comment #1)
> Created an attachment (id=101296) [edit]
> Incorrect shadow rendering on new windows

Has nothing to do with this bug.
Please keep bugs to a single issue.
Comment 4 Patryk Zawadzki 2007-12-20 12:41:45 UTC 
iain:

Sorry, I know it has nothing to do. As I wrote:

"see attachment and tell me if it's worth to file a bug" ;)
Comment 5 Patryk Zawadzki 2007-12-20 13:47:34 UTC 
More research:

If I have a window that covers another window completely, sometimes alt+tabbing to that desktop has the thumbnail for small window, sometimes it doesn't.

It's easier to reproduce if you switch to another desktop and alt+tab there first before coming back to the one with two windows.

Let me know if I can help you in some other ways, your metacity compositor is the best thing since sliced bread.
Comment 6 iain 2007-12-20 15:28:08 UTC 
(In reply to comment #4)
> iain:
> 
> Sorry, I know it has nothing to do. As I wrote:
> 
> "see attachment and tell me if it's worth to file a bug" ;)

Yeah, I saw that...its just easier in the long run to file a bug instead of cluttering up another bug asking if you should file a bug :)

I've started to be able to reproduce this and playing with the backing store is what I've been doing today, so maybe something will come out of that :)

thanks
Comment 7 iain 2008-04-30 23:11:13 UTC 
This might be fixed in SVN Head as I noticed a bug there recently.
Note You need to log in before you can comment on or make changes to this bug.