Bug 127830 - Visual garbage scroll down when bottom of window off screen
Summary: Visual garbage scroll down when bottom of window off screen
Status: RESOLVED INSUFFICIENTDATA
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
6.0 all versions
Hardware: All Windows (All)
: medium minor
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-09-27 21:14 UTC by jcarstensen
Modified: 2020-05-14 03:49 UTC (History)
1 user (show)

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Description jcarstensen 2019-09-27 21:14:02 UTC
Description:
When the bottom of the body (not just the bottom status line) is below the bottom of the screen and I scroll down rapidly (with both mouse wheel and with dragging the scroll bar, the display does not show correctly.  The effect is always an occasional bit pasted over the correct text.  What overlies it varies, sometimes a black or white bar and at other times something from the text such as partial (top or bottom or while lines) - it looks like it might be grabbing something and repeating it.

The repeated garbage is the same even if I scroll back up and down, but if I move the window and do it again, it's different garbage.

Same is true if the top of the window is too high (using another monitor to get it there) and scrolling upwards.

Another oddity - I have two monitors. I can reproduce this every time on my main monitor, and never on my second monitor.

Steps to Reproduce:
1.  Have a long document
2.  Move the writer window so that the main body part that has the test is partially off the bottom of the screen.
3.  Scroll down rapidly.

Actual Results:
Parts of the body are obscured by repeated blocks that look like they are screen captures of about a line of text.  The block is the same each time, until the window is moved.

Expected Results:
Shown the text in the document.


Reproducible: Sometimes


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
[Information automatically included from LibreOffice]
Locale: en-US
Module: TextDocument
[Information guessed from browser]
OS: Windows (All)
OS is 64bit: no

Version: 6.0.3.2 (x64)
Build ID: 8f48d515416608e3a835360314dac7e47fd0b821
CPU threads: 8; OS: Windows 10.0; UI render: default; 
Locale: en-US (en_US); Calc: 

OpenGL Extension Viewer:
Renderer: GeForce GTX 650 Ti/PCIe/SSE2
Vendor: NVIDIA Corporation
Memory: 1024 MB
Version: 4.6.0 NVIDIA 411.63
Shading language version: 4.60 NVIDIA
Comment 1 jcarstensen 2019-09-27 21:23:13 UTC
Just downloaded and installed 6.3.2 and can confirm the problem still exists.

Version: 6.3.2.2 (x64)
Build ID: 98b30e735bda24bc04ab42594c85f7fd8be07b9c
CPU threads: 8; OS: Windows 10.0; UI render: default; VCL: win; 
Locale: en-US (en_US); UI-Language: en-US
Calc: threaded
Comment 2 Xisco Faulí 2019-10-14 15:19:50 UTC
Thanks for reporting this issue.
Does it work if you disable OpenGl ? -> https://wiki.documentfoundation.org/OpenGL

I have set the bug's status to 'NEEDINFO'. Please change it back to
'UNCONFIRMED' if the issue is still present
Comment 3 QA Administrators 2020-04-13 03:24:42 UTC Comment hidden (obsolete)
Comment 4 QA Administrators 2020-05-14 03:49:11 UTC
Dear jcarstensen,

Please read this message in its entirety before proceeding.

Your bug report is being closed as INSUFFICIENTDATA due to inactivity and
a lack of information which is needed in order to accurately
reproduce and confirm the problem. We encourage you to retest
your bug against the latest release. If the issue is still
present in the latest stable release, we need the following
information (please ignore any that you've already provided):

a) Provide details of your system including your operating
   system and the latest version of LibreOffice that you have
   confirmed the bug to be present

b) Provide easy to reproduce steps – the simpler the better

c) Provide any test case(s) which will help us confirm the problem

d) Provide screenshots of the problem if you think it might help

e) Read all comments and provide any requested information

Once all of this is done, please set the bug back to UNCONFIRMED
and we will attempt to reproduce the issue. Please do not:

a) respond via email 

b) update the version field in the bug or any of the other details
   on the top section of our bug tracker

Warm Regards,
QA Team

MassPing-NeedInfo-FollowUp