Issue 72639 - Screen corrupt after scrolling using "smooth scrolling"
Summary: Screen corrupt after scrolling using "smooth scrolling"
Status: CLOSED DUPLICATE of issue 14988
Alias: None
Product: Writer
Classification: Application
Component: viewing (show other issues)
Version: OOo 3.1
Hardware: PC Windows, all
: P3 Trivial with 3 votes (vote)
Target Milestone: ---
Assignee: Oliver-Rainer Wittmann
QA Contact: issues@sw
: 106707 (view as issue list)
Depends on:
Reported: 2006-12-15 23:13 UTC by micawber
Modified: 2013-08-07 14:44 UTC (History)
4 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

Screen corruption in writer (40.86 KB, image/png)
2006-12-15 23:14 UTC, micawber
no flags Details
Screenshot (108.80 KB, image/png)
2007-01-01 09:57 UTC, kpalagin
no flags Details

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Description micawber 2006-12-15 23:13:22 UTC
Open new document. Fill a few pages with random text. Format the document to
have 2 columns. Page up and down using PageUp and PageDown keys. Lines becomes
corrupt. Refreshing screen solves problem, but it occurs again immediately. See
forum thread  (I am using
a 2005 Sony Vaio with ATI X600 card --no other screen redraw problems with other
Comment 1 micawber 2006-12-15 23:14:25 UTC
Created attachment 41461 [details]
Screen corruption in writer
Comment 2 michael.ruess 2006-12-17 07:07:49 UTC
Reassigned to SBA.
Comment 3 kpalagin 2006-12-18 11:22:10 UTC
can't reproduce. Likely to be driver issue (or the way OO interacts with that 
particular driver). Try lowering hardware acceleration in right-click desktop, 
Properties, Settings, Advanced, Troubleshoot.
Comment 4 micawber 2006-12-18 22:08:08 UTC
No, I lowered the hardware acceleration to its lowest setting and the screen
corruption still occurs. I suggest it is within OO's modules for it does not
happen in other software.
Comment 5 micawber 2006-12-27 05:59:07 UTC
I have found the culprit: SMOOTH SCROLLING.  When  I switched smooth scrolling
off in the Writer options, the screen corruption disappeared.
Comment 6 kpalagin 2006-12-27 10:19:07 UTC
can't repro even with smooth scrolling on.
Comment 7 micawber 2006-12-27 13:11:50 UTC
I suggest you look at issues <a
href="">14988</a> and <a
Comment 8 micawber 2006-12-29 16:04:50 UTC
You guys have got to be kidding me! I went to my wife's new Dell notebook,
installed OO 2.1, filled a new Writer document with garbage text (a few pages),
turned on "smooth scrolling", hit the "Page Up" and "Page Down" keys (important)
and instantly saw the bug.

This bug is clearly there on different computers and is easily reproducible.

Please change the status of this to confirmed and assign it for fixing.
Comment 9 micawber 2006-12-31 12:51:10 UTC
Incredibly, the topic thread at that covers this issue, and to
which I linked in my first message, has disappeared! 

Why was it removed from oooforum?

Why has nobody acknowledged this bug, one that I can easily reproduce on
different computers?
Comment 10 kpalagin 2007-01-01 09:53:37 UTC
Confirming with OO 2.1 on WinXP with Nvidia FX5200 - display is corrupted when 
holding PgUp/PgDn with long (6+ pages of random text) document.
I am attaching screen-shot with corruption areas circled in red.
Reducing priority from P2 to P3.
Comment 11 kpalagin 2007-01-01 09:57:49 UTC
Created attachment 41804 [details]
Comment 12 stefan.baltzer 2007-02-13 14:17:45 UTC
SBA: This problem is very likely to be system-dependant. Thus I do not want to
set it to "Worksforme" just yet. 
Believe it or not, we do NOT have a pool of all graphic devices sold on this
planet in our labs :-(

SBA->micawber + kapalagin: Please re-verify your findings in the latest OOo 2.2
RC builds (Or SRC680m201 upwards). 
There were "general display issues" fixed (i.e. in CWS aw024) that _MAY_ have
adressed your cases.

Please comment here and tell about your graphic device and your Acceleration
Comment 13 micawber 2007-02-13 16:23:52 UTC
I have two newish computers, both still show the screen corruption with today's
build. The machines I have are Dell and Sony laptops, one with a ATI MOBILITY
RADEON X600 (256 MB) and one with a ATI X300 card.

FYI, ATI has about 30% of the market in graphics cards, and since kpalaqin found
the same issue with the other big kahuna in graphics, nVidia, you cannot, in all
good faith, possibly mark this as a "worksforme" error.

I tried with graphics acceleration at all levels, made no difference.
Comment 14 kpalagin 2007-02-14 08:01:30 UTC
Can't try on the same machine at the moment, will try in the end of the week.
What I have discovered so far is that smooth scrolling UP seems to slower than 
scrolling down.
Comment 15 micawber 2007-02-21 22:37:40 UTC
I would guess that the screen is not being properly refreshed during the little
edgy sliding motions that occur at the end of the PAGEUP or PAGEDOWN actions.
These are the little movements that give the screen the "smooth scrolling"
effect. This is probably a fairly easy thing to fix.
Comment 16 kpalagin 2007-03-02 20:39:24 UTC
Can't repro with 2.2m8 anymore. Seems to be fixed.

please try 2.2 (to be released soon) and comment accordingly.
Comment 17 micawber 2007-03-02 23:53:00 UTC
Seems to be *gone* in the 2.2.0 release candidate I downloaded 2 days ago.
Hey-yo! Some snuck a fix in there.
Comment 18 micawber 2007-03-03 00:01:45 UTC
I hate to be picky but I'd like to add that while the corruption has gone, the
"silkiness" of the smooth scrolling has gone too. Now "smooth scrolling" is not
far different to ordinary scrolling, that is, a bit jarring and jumpy. Whatever
they've done to fix the screen refresh problem has also resulted, unfortunately,
in a loss of a sense of sliding, liquid screen.

I suggest this issue should be slated for enhancement down the track.
Comment 19 micawber 2007-03-06 02:39:05 UTC
Oops! Fault is *still* there if I edit a document with small fonts (7pt) and two
columns. This is still an active defect.
Comment 20 kpalagin 2007-03-21 16:49:45 UTC
*** Issue 75445 has been marked as a duplicate of this issue. ***
Comment 21 micawber 2007-04-04 14:30:31 UTC
addendum: I have also noticed general screen corruption in Writer, even with the
smooth scrolling turned off. One of the artefacts is an invisible vertical line
down the screen, at some arbitrary point, whereupon the left and right sides of
the screen are slightly staggered, by less than a millimetre usually. I suspect
this is part and parcel of the buggy graphic memory handling in Writer.
Comment 22 Mathias_Bauer 2007-12-04 12:36:40 UTC
following release status meeting -> target 3.x
Comment 23 micawber 2009-11-04 10:03:20 UTC
Still apparent on a newer computer with 4GB RAM and running fully patched Vista.
Had to go to "optimal zoom" to see it. Did not occur at 100% zoom.
Comment 24 Rainer Bielefeld 2009-11-08 16:11:39 UTC
*** Issue 106707 has been marked as a duplicate of this issue. ***
Comment 25 robinkiwi 2009-11-12 01:38:35 UTC
I really think that this issue which can be traced back to OOo 1.0.3 (issue
14988) should have been fixed by now.
Not only is it annoying for the user but seriously detracts from the claim that
Open Office is a reliable replacement for MS Office.
Is it dependent on the video card used? No other program (and I have a lot!)
shows this defect. NVidia GeForce 7600GS, Vista Home Premium
Comment 26 rblevin 2010-02-05 14:53:20 UTC
I hate to sound like a jerk, but this is one reason open source can be said to 
su*k. This issue has been troubling users since 2006, and it's still not fixed. 
I am on a new, ultra-high-end brand-name laptop with awesome and ample hardware. 
Installed OOo 3.1.1, turned on smooth scrolling in Writer, and the screen looks 
like cr*p. I have seen this with EVERY version of OOo Writer on EVERY computer I 
have owned, including Sony, Dell, Gateway, IBM, Acer, Asus, more. Meanwhile, no 
version of MSFT Word has an issue with smooth scrolling. And as a professional 
writer, this is a HUGE problem, because I CAN'T READ THE SCREEN. Perhaps worse, 
when you disable smooth scrolling, the text jumps horribly at every page break 
(another well documented annoyance that has been ignored for years). Sorry for 
the attitude and screaming caps, but the lack of attention to such as basic and 
fundamental feature is outrageous neglect on the part of whoever is responsible 
for this FUNDAMENTAL feature. BTW, I do not see this issue on my Linux machines, 
which means it's "Windows user neglect."
Comment 27 stefan.baltzer 2010-02-09 07:18:53 UTC
SBA->OD: This looks like a dupe of issue 14988.
Comment 28 stefan.baltzer 2010-02-09 07:19:41 UTC
Set to duplicate.

*** This issue has been marked as a duplicate of 14988 ***
Comment 29 stefan.baltzer 2010-02-09 07:21:03 UTC
Closing duplicate issue.