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[Bug 559579] [NEW] Thick border appears hollow after expose events with FGLRX driver

 

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Binary package hint: openoffice.org
(description updated 5/22/2010)

When using the fglrx hardware-accelerated graphics driver in Linux,
thick (4 point) borders sometimes appear hollow in print-preview, i.e.,
they are rendered as two very thin lines separated by a thick white
space.   The problem seems related to X expose events (see below).

Attached is a demo .ods file and screen-shot showing the incorrect
rendering.

The screenshot was taken on a 1920x1280-res system, where the symptom
occurs constantly.  At lower resolutions such as 1280x1024, only the
left third or half of the line is solid black, the rest hollow, and
expose events cause black portions to be re-painted as hollow (not all
white, but hollow).

The problem appears only in the first instance of the border, not in
other similar borders.  Maybe it has to do with the previous row
somehow.

This -might- be an fglrx driver bug, but such problems do not appear
with any other application.  The exact way the X server sends expose
events to applications might depend on intimate details of the driver
and hardware acceleration, and how (or whether) save-unders are
implemented.  So this might be a problem with oo's rendering/expose-
event code.

To reproduce this you probably need to have an ATI graphics card and use
the fglrx driver.

ProblemType: Bug
Architecture: amd64
Date: Fri Apr  9 13:36:10 2010
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: fglrx
Package: openoffice.org-calc 1:3.1.1-5ubuntu1.1
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-21.59-generic
SourcePackage: openoffice.org
Uname: Linux 2.6.31-21-generic x86_64
---
Architecture: amd64
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
NonfreeKernelModules: fglrx
Package: openoffice.org-calc 1:3.2.0-7ubuntu4
PackageArchitecture: amd64
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Tags: lucid
Uname: Linux 2.6.32-22-generic x86_64
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse games lpadmin netdev plugdev sambashare tape users vboxusers video

** Affects: fglrx-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug apport-collected karmic
-- 
Thick border appears hollow after expose events with FGLRX driver
https://bugs.launchpad.net/bugs/559579
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