138445 - Black blocks appear randomly above text when scrolling

Status: RESOLVED WORKSFORME

(Core :: Layout, defect, P4)

Description

[Olivier Cahagne]

Mozilla Build ID: 2002041810 (trunk), have seen this bug for months.

Steps to reproduce:
1. Load URL http://actu.voila.fr/Article/article_hightech_020419094319.v1te153j.html
2. Scroll either with mouse wheel or scrollbar,
3. Sometimes you'll see black blocks as in upcoming screenshot.

This occurs on some few other sites but I often see this bug surfing on this
site http://actu.voila.fr/
Might be related: bug 101907.
I'm using a T22 with S3 chipset at 16bpp, latest drivers.

Comment 1

[Olivier Cahagne]

Attachment: Screenshot with build 2002041810 (trunk) on Win2k

Comment 2

[Olivier Cahagne]

Attachment: Background image used on this page (and upcoming testcase)

Comment 3

[Olivier Cahagne]

Attachment: Reduce testcase (scroll many times, at various speeds, up and down until you see black blocks)

Comment 4

[Laura Krietemeyer]

Changing QA Contact

Comment 5

[Kevin McCluskey (gone)]

WFM: Using 2002050108 trunk build on WinXP. I can not get the black blocks to
appear.

Reassigning to Don.

[e-mail]: Can you try to reproduce this using a current build on
Win2K?. Thanks.

Comment 6

[Kevin McCluskey (gone)]

Reassigning

Comment 7

[Ian Neal]

This could also be related to bug 104992 or bug 111176

Comment 8

[Olivier Cahagne]

Ian I don't think this is bug 104492 as I'm not using an ATI graphic card, but a
S3 Savage IX. Bug 111176: perhaps although the graphic glitch is definitely
different.
I'll see if disabling cursor & bitmap acceleration makes it working.

Comment 9

[Olivier Cahagne]

Marking dupe of bug 115452, there's definitely an issue with Mozilla/GTK/Win32
and S3 Savage* graphic cards.
When disabling cursor & bitmap acceleration, there's no issue anymore.

*** This bug has been marked as a duplicate of 115452 ***

Comment 10

[Olivier Cahagne]

Reopening as even driver 7.40.54 (which fixed bug 115452) didn't solve this one.

Comment 11

[Mats Palmgren (inactive)]

WFM, 2002-08-24-04 trunk Linux
WFM, 2002-08-24-04 trunk Windows 2000

Olivier, can you still reproduce it with a current trunk build?

Comment 12

[Olivier Cahagne]

wfm using build 2002083104 on Win2k (trunk) + S3 driver 7.40.54.