392320 - slow scrolling when the page has a static background

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[Nicolò Chieffo]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; it; rv:1.8.1.6) Gecko/20070810 Ubuntu/7.10 (gutsy) Firefox/2.0.0.6
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; it; rv:1.8.1.6) Gecko/20070810 Ubuntu/7.10 (gutsy) Firefox/2.0.0.6

in some sites such as
http://www.starcraft2.com/
http://www.linuxpowertop.org/known.php
which have an image in the background
when the background becomes visible (for example in the bottom of starcraft2 site), the scrolling is really slow

Reproducible: Always

Steps to Reproduce:
1. visit the site
2. scroll down
Actual Results:  
when you see the background scrolling becomes too slow and not fluid

Expected Results:  
scrolling must be the same speed and not suffer from these sites background

- in windows this problem does not exist!!!
- some distributions such as ubuntu, has this problem empathized

Comment 1

[Nicolò Chieffo]

maybe the code portion that causes the bug is this

body { background-color: #fff;
background-image: url("images/rubric/gradient.gif");
background-attachment: fixed;
background-position: bottom;
background-repeat: repeat-x; }

Comment 2

[Nicolò Chieffo]

I've read bug https://bugzilla.mozilla.org/show_bug.cgi?id=124150 but I think it is not a dup because it only states OS=Windows

Comment 3

[Nicolò Chieffo]

I opened a bug for granparadiso, closing this

Comment 4

[Ulrik Mikaelsson]

Duplicate of bug #394005