615457 - Problems with FF4 beta 7 and Intel 965 Chipset

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[jonrandy]

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:2.0b7) Gecko/20100101 Firefox/4.0b7
Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0b7) Gecko/20100101 Firefox/4.0b7

I’ve got a laptop with intel 965 mobile graphics. I had to downgrade my intel driver for FF4 beta 7 to run at an acceptable speed (scrolling had got all jerky and slow). FF3.6 is fine, earlier betas of 4 were ok too. The problem with downgrading the gfx driver is webgl no longer works with HW acceleration and other apps on my system no longer work correctly. Is there a known issue with the drivers for this card? Is it going to be fixed? FF4 seems to be the only program I run that has issues with my GFX card

Reproducible: Always

Steps to Reproduce:
1. Open firefox 4 beta 7 with latest drivers for Intel 965 Mobile chipset
2. 
3.
Actual Results:  
WebGL works ok (accelerated), but scrolling and general 2d performance is sluggish and jerky

Expected Results:  
WebGL working (accelerated) and silky 2d performance

Comment 1

[jonrandy]

Downgrading the drivers fixes the sluggish scrolling performance at the expense of losing accelerated WebGL functionality and the ability to successfully run other programs on my machine

Comment 2

[Tim (fmdeveloper)]

Reporter -> Are you still experiencing this issue?

Please post the graphics section from about:support

Comment 3

[jonrandy]

Seems fixed now, since FF5 or late 4 I believe

Comment 4

[Tim (fmdeveloper)]

Glad to hear it!