See the URL: when using the autoscroll feature in firefox using the middle mouse button, it shows a trail. This problem occurs with X.org with composite ON. Else it just behaves like in Xfree86 where I never experienced this problem either.
Mousewheel up/down do not have these problems, and if you scroll the page a bit, the trail goes away.
I tried running without my profile directory, but it made no difference.
Steps to Reproduce:
1. Get X.org and enable composite extension
2. Get firefox and enable autoscroll
3. View random page and hold down your middle mouse button to scroll
The autscroll feature works as it should, but leaves a trail as seen in the pic
in the URL.
Not leave a trail...
1637$2 jaguar $ emerge -p xorg-x11 mozilla-firefox nvidia-kernel nvidia-glx &&
These are the packages that I would merge, in order:
Calculating dependencies ...done!
[ebuild R ] x11-base/xorg-x11-6.8.0-r4
[ebuild R ] net-www/mozilla-firefox-1.0
[ebuild R ] media-video/nvidia-kernel-1.0.6111-r3
[ebuild R ] media-video/nvidia-glx-1.0.6111
Linux jaguar 2.6.9-gentoo-r6 #1 SMP Tue Nov 30 15:58:27 CET 2004 i686 Intel(R)
Celeron(TM) CPU 1200MHz GenuineIntel GNU/Linux
1637$2 jaguar $
Nothing we can do about this, looks like it's already been reported to nvidia. Please follow any further issues on the upstream (freedesktop.org) bug.
This is a binary driver problem.