176684 - vertical scrollbar moves jerkily

Status: VERIFIED INVALID

(SeaMonkey :: General, defect)

Description

[Andrew E. Schulman]

User-Agent:       Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.2b; MultiZilla v1.1.26) Gecko/20021016
Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.2b; MultiZilla v1.1.26) Gecko/20021016

At this one page (I haven't seen it anywhere else), when I drag the vertical
scrollbar, it moves in a jerky motion, not smoothly as usual.  Also, while I'm
moving the scrollbar my CPU usage jumps to 100%.  Obviously Moz is having to do
some extra work to render as it scrolls.

Internet Exploder 5.5 scrolls the page with no trouble.


Reproducible: Always

Steps to Reproduce:
1.  Go to the site.
2.  Drag the vertical scrollbar up and down.


Actual Results:  
Jerky scrolling, 100% CPU load.

Expected Results:  
Smooth scrolling, low CPU load.

My CPU is a P4-1700.

Comment 1

[Andreas Kunz]

With 2002102208 on Win2k scrolling is smooth on my Athlon-600.
Only at the very top it is not perfectly smooth. Don't know if I would have
recognized it without looking for it...
Maybe graphics card/driver related? Mine is a TNT2.

Comment 2

[Andrew E. Schulman]

OK.  I updated my display driver, and the problem has disappeared.  Thanks for
the tip, and sorry to bother you!

Andrew.

Comment 3

[Andreas Kunz]

Fine! Now you probably can resolve this bug as INVALID, which means that it is
not a bug in mozilla. If you think so.

Comment 4

[Andrew E. Schulman]

This was a problem with my display driver, not with Moz.  Moz rules!

Comment 5

[Wesha]

verified.

However, the slow scrolling problem DOES exist for huge vertical images (say, 1
pixel wide and 4000 pixels high). We have that bug filed and are working on it.