Scrolling in FF 4 beta 5 is worse than FF 3.6.9




8 years ago
8 years ago


(Reporter: r_rom, Unassigned)


Windows 7

Firefox Tracking Flags

(Not tracked)




8 years ago
User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:2.0b5) Gecko/20100101 Firefox/4.0b5
Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b5) Gecko/20100101 Firefox/4.0b5

Very noticeable! One of pages on which I've noticed this is With fresh profile.

Reproducible: Always


8 years ago
Summary: Scrolling in FF 4 beta 5 is worse than FF 3.6.8 → Scrolling in FF 4 beta 5 is worse than FF 3.6.9
Is your Issue reproduceable Extension-less in Safe-Mode and/or using a new Profile?

Does disabling Hardware Acceleration under Options/Advanced/General help?
If yes, please provide the Graphics Info from about:support (on the Bottom).
Version: unspecified → Trunk

Comment 2

8 years ago
Yes, a new profile. Disabling Hardware Acceleration does NOT help.

The difference isn't as big as it's in demos of IE 9 when compared to other browsers but is noticeable. Here's another page on which I perceive it:

Here's the Graphics Info:

Adapter Description NVIDIA GeForce Go 6150
Vendor ID 10de
Device ID 0244
Adapter RAM 64
Adapter Drivers nvd3dum nvwgf2um
Driver Version
Driver Date 3-6-2009
Direct2D Enabled false
DirectWrite Enabled false

Comment 3

8 years ago
Disabling HW acceleration is taken into account only after a FF restart.
So, do you still have the problem without HW acceleration ?
If HW acceleration is the cause, could you update your graphic driver to the latest one (issue date : 2010.07.19). Go to your laptop support site or nvidia support site ("windows 7 update" service is in late for graphic driver update) :

Comment 4

8 years ago
I've tried disabling HW acceleration but hadn't noticed an affect.

It's not always easy to detect the difference between how FF 4 b5 does scrolling and how FF 3.6.9 does it. Scrolling in 3.6.9 seems smoother, but I wouldn't bet my life on it.

The new driver couldn't be installed on my laptop because the installation program didn't find drivers compatible with my hardware.

Comment 5

8 years ago
Are you sure the scrolling behavior is identical in FF 3.6.9 and FF 4.0b5 :
Go to Options > Advanced, and check if the 2 following options are ticked the same way :
+ Use auto scrolling
+ Use smooth scrolling

For graphic driver update, you can do it manually :


8 years ago
Last Resolved: 8 years ago
Resolution: --- → WORKSFORME
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