Choppy scrolling in Firefox/Facebook

I beta tested Yosemite. That being said, when I was still running Mavericks, I had this awful problem in Firefox (especially on Facebook) where scrolling down got horribly choppy, and the rainbow spinny pinwheel would come up constantly. After installing beta 1 this ceased to be a problem, so I didn't give it much thought all through the betas. Today I've formatted, and did a clean install of the final release of Yosemite, and now the exact problem is back again! I am beyond annoyed. Does anyone else have this issue?
Thanks
By the way, this problem is non-existent in Safari.

I'm also having similar issues with Chrome. When I switch between tabs it takes a couple seconds before the page shows up (even after it's already loaded). Also I have the choppy scrolling, and other apps take longer to open than they used to. I have a Mid-2012 MacBook Pro 13" with 750GB hard drive and 2.9 GHz. I'm assuming this is a Yosemite issue, rather than my computer as it ran flawlessly before.

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All drivers are up to date. Windows 7 Professional N, hardware acceleration on or off makes no difference. Any ideas?

Also good to mention that if I switch to YouTube flash, the problem is gone, however Flash gives such a sh** performance, that I would rather tolerate a bit of choppy scroll than using the flash player :)
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[SOLVED] Fixing slow scrolling in firefox with nvidia and 64 bit

I'm experiencing very slow scrolling with firefox on sites like
http://www.roadrunnerrecords.com/blabbermouth.net/
http://www.vai.com/News/index.html
I'm running 64 bit with KDEmod. Scrolling is fine when I remove flash completely but on Ubuntu 10.04 (64 bit) the abnove sites scroll fine on a different machine (with intel graphics). I read somewhere by modifying xorg with "AccelMethod" "EXA" to "XXA" scrolling becomes very smoth onm ATI and Intel. Here is my xorg.conf:
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/TTF"
FontPath "/usr/share/fonts/Type1"
EndSection
Section "Module"
Load "glx"
Load "record"
Load "dbe"
Load "extmod"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
HorizSync 28.0 - 72.0
VertRefresh 43.0 - 60.0
EndSection
Section "Device"
Identifier "Card0"
Driver "nvidia"
VendorName "nVidia Corporation"
BoardName "G92 [GeForce 9800 GT]"
Option "RenderAccel" "true"
Option "NoLogo" "true"
Option "AGPFastWrite" "true"
Option "EnablePageFlip" "true"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1680x1050"
EndSubSection
EndSection
Section "Extensions"
Option "Composite" "Enable"
Option "RENDER" "Enable"
EndSection
is there something I can change to improve scrolling in firefox? I've tried to turnoff desktop effects and scrolling is the same annd also running firefox from a fresh profile. Hence, i suspect my nvidia 9800GT card to be the culprit. If anyone has a working xorg.conf with nvidia, 64 bit and smooth scrolling on the above mentioned sites please SHARE! Many Thanks!
Last edited by fettouhi (2012-02-22 17:42:10)

karol wrote:
> Tried it now and that worked. Running without a xorg.conf buty now I can't turn on desktop effects in KDE. How do I set that up?
Sorry, I don't use KDE, but it may be related to how do you start KDE: from xinit or via KDM or sth.
> How do I determine what driver xorg is using now that I'm running without it xorg.conf?
It's running the same driver as before.
> Using the binary nvidia blob driver.
Did you uninstall it? Did you install the nouveau driver? 'pacman -Qqs xf86-video' will tell you what drivers you have installed.
No, I don't have the nouveau driver installed. I have to check if I have the nv driver installed but I didn't uninstall the nvidia driver. I'm starting KDE via xinit.

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Using my mouse pad scroll feature I cannot scroll in Firefox. I've been using Firefox for years and never had a problem before. I can scroll in Chrome and I.E. There are a few websites I can scroll in but not in Yahoo and several other sites. and I can't scroll on the page I'm typing this question on.

Try to modify the pref ui.trackpoint_hack.enabled on the about:config page from the default value -1 to 0 or 1 to see if that makes the scroll pad work.
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Choppy scrolling in Firefox/Facebook

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