582147 - Distortion caused by scrolling

Status: RESOLVED DUPLICATE of bug 579736

(Core :: Graphics, defect)

Description

[Hartmut Figge]

Attachment: distortion

Steps to reproduce:

1.   Use a nightly of SM 2.1 newer than 2010-07-16
2.   Open http://tinderbox.mozilla.org/showbuilds.cgi?tree=SeaMonkey in
     the browser
2.b  Choose a fontsize big enough that there is a horizontal scrollbar.
     I am using a fontsize of 20.
3.   Scroll right horizontal
3.b  If there is no distortion open a new tab and try there

The resulting distortion is shown in the attached picture. The regression range according to the archive of my private builds is

hafi@e675 ~ $ fenster 1007150002-1007160552
2010-07-14 15:02:00 PDT
2010-07-15 20:52:00 PDT

The distortion could not be seen be 2 others using win, but was confirmed by another one using Linux. See thread 'Graphical distortion in recent SM 2.1 Linux nightlies' in mozilla.support.seamonkey 2010-07-26.

Comment 1

[Barry Edwin GIlmour]

Attachment: distortion-02

Mozilla/5.0 (X11; Linux x86_64; rv:2.0b3pre) Gecko/20100725 SeaMonkey/2.1a3pre ID:20100725225141
GeForce 9600 GT with nvidia-drivers 195.36.24 (Barry)

Comment 2

[Hartmut Figge]

It may be that the graphic card and/or the driver should be considered. I am using a Nvidia GeForce 8800 GTS with nvidia-drivers 195.36.31.

Comment 3

[Hartmut Figge]

One additional information. After changing the driver from "nvidia" to "nv" in xorg.conf and restarting X the distortion does no longer appear. Not really a solution because there is a reason why most users will use the Nvidia driver. ;)

Comment 4

[Robert Kaiser]

I'm using the nouveau driver (3D off) and I've also never seen this problem.

Comment 5

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Probably depends on the bug to use XCopyArea

Comment 6

[Hartmut Figge]

After applying the pending patch https://bugzilla.mozilla.org/attachment.cgi?id=458928 from bug 579736 the distortion is gone in my just compiled SM 2.1. :)

Comment 7

[Karsten Düsterloh]

I see this with Mozilla/5.0 (X11; Linux x86_64; rv:2.0b3pre) Gecko/20100727 SeaMonkey/2.1a3pre; but indeed I have a GeForce 8800 GTS with NVidia driver 190.53...

Comment 8

[Ian Neal]

I see this on trunk with ATI Radeon X300

Comment 9

[Joe Drew (not getting mail)]

Given comment 6, this can probably just be a dupe.

Comment 10

[Karsten Düsterloh]

Well, the patch mentioned in comment #6 does *not* fix the issue for me, eg for <http://www.myspace.com/monoincmusic>.

Comment 11

[Karl Tomlinson (:karlt)]

(In reply to comment #10)
> Well, the patch mentioned in comment #6 does *not* fix the issue for me, eg for
> <http://www.myspace.com/monoincmusic>.

We'll need https://bugs.freedesktop.org/show_bug.cgi?id=29250 for that,
and probably a new Mozilla bug to track it.

Comment 12

[Hartmut Figge]

In my recently compiled fresh build of SM 2.1 on Linux with the above mentioned patch the distortion when scrolling the tinderbox is gone. An immediately following build without the patch showed the error again.

@Karsten in comment 10:
I do not see any error on this side with either of builds, even with Flashblock and Adblock disabled.

Comment 13

[Hartmut Figge]

(In reply to comment #9)

> *** This bug has been marked as a duplicate of bug 579736 ***

Really a dupe? I cannot reproduce the problem of bug 579736 here. Doesn't show up on a build without the patch. And also not on one with it.

Mozilla/5.0 (X11; Linux i686; rv:2.0b3pre) Gecko/20100729 Mnenhy/0.8.3 SeaMonkey/2.1a3pre

Comment 14

[Karl Tomlinson (:karlt)]

(In reply to comment #11)
> (In reply to comment #10)
> > Well, the patch mentioned in comment #6 does *not* fix the issue for me, eg for
> > <http://www.myspace.com/monoincmusic>.
> 
> We'll need https://bugs.freedesktop.org/show_bug.cgi?id=29250 for that,
> and probably a new Mozilla bug to track it.

Bug 583115

Comment 15

[Karl Tomlinson (:karlt)]

(In reply to comment #13)
> Really a dupe?

The results of the same undefined operation differ according to graphics hardware and drivers.