190346 - Paints to second head when scrolling

Status: RESOLVED INVALID

(Core Graveyard :: GFX: Gtk, defect)

Description

[chris]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20021226 Debian/1.2.1-9
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20021226 Debian/1.2.1-9

Running a dual head system with gnome and Matrox G550.
Mozillia is open in the left screen. Text appears on the right screen when
scrolling.


Reproducible: Always

Steps to Reproduce:
1.Open Mozilla on Debian machine with dual heads open in the left screen
2.Go to http://news.google.com
3.Scroll really fast

Actual Results:  
Some remenants of text appears on the right screen outside of the boundries of
the mozilla window.

Expected Results:  
There should have been no images anywhere but in the mozilla window.

Machine Info:
Debian with Dual head Matrox g550 video card
xinerema running to get dual head display
WindowMaker is the window manager

Comment 1

[Christopher Blizzard (:blizzard)]

Wow, I don't have a dual head machine to test this out on, but this sounds like
an amazing bug to witness.  (It sounds like a bug in X, fwiw.  Maybe in the
server-side Xrender code.)

Comment 2

[keithp]

This is a known bug in the Matrox render acceleration code.  Mike Harris "fixes"
this by turning off render acceleration, which is apparently easy enough to do.

Egbert Eich has committed a patch to disable acceleration for XFree86 4.3 when
in multihead mode.

Comment 3

[Christopher Blizzard (:blizzard)]

Marking as invalid.