when changing graphic card, lots of lags when scrolling




7 years ago
7 years ago


(Reporter: Yann, Unassigned)


4.0 Branch
Mac OS X

Firefox Tracking Flags

(Not tracked)




7 years ago
User-Agent:       Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0) Gecko/20100101 Firefox/4.0

When I open Firefox no problem, but when I change the use of my graphics card (ex. switching to chipset intel HD), my Firefox lags for everything, typing, scrolling... I have to restart it everytime.

Reproducible: Always

Steps to Reproduce:
1. Use Firefox, and switch to Intel HD Graphics chipset (and vice versa)
2. You will lag
3. You have to restart Firefox to solve this problem...
Actual Results:  
My Firefox lags when I want to scroll, typing...

MBP i7, 2.66 GHz, 8 Go 1067 MHz DDR3, MAC OS X 10.6.7, use SSD Vertex 2 and use theses add-ons:
- Adblock Plus
- Downthemall
- Element Hidding Helper (ADBP)
- Firebug
- Page Speed
- Web developper
- Xmarks

Comment 1

7 years ago
Please post the graphics section from about:support when using the Intel HD Graphics chipset.

Does the issue still occur if you start Firefox in Safe Mode? http://support.mozilla.com/en-US/kb/Safe+Mode
Version: unspecified → 4.0 Branch

Comment 2

7 years ago

My graphics section : http://yann.tobehost.net/partage/index.php/Capture%20d%E2%80%99e%CC%81cran%202011-04-19%20a%CC%80%2010.52.48.png

No, it works better in Safe Mode, but I can't understand how of these plugins can do that...


Comment 3

7 years ago
Safe Mode also disables hardware acceleration. That is the most likely cause. Your graphics section doesn't show the driver or version. Can you provide that info?

Comment 4

7 years ago
See if this helps: try  Preferences > Advanced Tab and under Browsing, uncheck "Use hardware acceleration when available"

Comment 5

7 years ago
Reporter, do you have anything new to add about this issue?

Comment 6

7 years ago
Hello, thanks for your tip, it was helpful :-), I've disable the hardware acceleration mode and it works!

But I think, there is always a problem with this feature...

Comment 7

7 years ago
Considering comment6, setting resolution to Resolved WFM.
Last Resolved: 7 years ago
Resolution: --- → WORKSFORME
Intel HA is pretty much dead in the water.
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