214646 - Flashing black box follows cursor

Status: RESOLVED FIXED

(SeaMonkey :: General, defect)

Description

[Matt]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624

This one's a little hard to explain. I've got Mozilla on a fresh install of
Win2k with service pack 4. As I move the mouse pointer around the page display
area, I get erratic but frequent flashes of black rectangles where the cursor
was a fraction of a second before. This generally happens if the cursor was
moving over page text -- if it's just the page background, it usually doesn't
happen. It also doesn't happen if moving the cursor over a text entry field,
like the one I'm typing this into. ;-) Bug happens for me on every page.

Vertical movement is much more likely to induce this than horizontal. If I move
the mouse at what I can only describe as a leisurely pace around a text-heavy
page like http://slashdot.org it can easily happen three times in a second, not
happen for 3 or 4 seconds, then do it again. The rectangles are never that big
-- usually approximately 1 square centimeter on my 17" 1024x768 screen. I
thought they might be timed with changes in the mouse pointer icon, but I've
ruled that out completely. To see if they might be related to text selection, I
tried changing the highlight color in  Windows Display Properties/Appearance to
red. The boxes still appeared black.

It does not appear to happen if the cursor is over links. I have a My Yahoo page
that's just a long list of available news articles, all links, and it doesn't
happen at all over them.

Sorry if dup, I searched for flicker and flash and didn't find anything....

Reproducible: Always

Steps to Reproduce:

Comment 1

[Matthias Versen [:Matti]]

Have you tried to update your video drivers ?

Comment 2

[Matt]

No, and I don't think I mind attempting to, but Mozilla is absolutely the only
program this happens in. I'll see if I can do that a little later and report
back, but it doesn't seem promising. The other thing to note is that this video
card is definitely older than Win2k, so presumably the built-in drivers can't be
too bad. ;-)

Comment 3

[Matt]

I confirmed I have the latest official driver. It's the one that shipped with Win2k.

Comment 4

[Matt]

No longer exists in version 1.5