Bug 23065

Forwarding this bug from Ubuntu:
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/371296

[Problem]
System freeze when using openoffice with SiS motherboard and R420.  Resolved by setting AGPMode 4.

[Original Report]

Linux wilbert-desktop 2.6.27-11-generic #1 SMP Wed Apr 1 20:57:48 UTC 2009 i686 GNU/Linux
openoffice.org 1:3.0.1-9ubuntu3(jaunty)

After upgrading from ubuntu 8.10 to 9.4, starting openoffice writer will freeze the system, the mouse will still move but stutters. Music will keep playing but stutters. Nothing will work but a hard reset.

The following item seems related but didn't help me:
  https://bugs.launchpad.net/ubuntu/+source/openoffice.org/+bug/319700

The system will freeze with other actions in ooffice tools, for example:
  openoffice calc -> Tools -> Options -> OpenOffice.org -> Java-> parameters

Opening a fileof RTF type will show the contents, doing anything will cause the freeze
Opening ODT will show an empty oowriter screen and freeze immediately

Editing section "Device" in xorg.conf prevents the freeze when using Driver "vesa" in stead of "ati" or add Option "NoAccel" "true".

<Later>
Now it seems to work when i add the following in xorg.conf :

Section "Device"
    Option "AGPMode" "4"
    ...

I followed tips mentioned on this page:
   https://wiki.ubuntu.com/X/Quirks

You can try values like 8 4 and 2, I have this problem when i use 8. Lower values should result in lower performance but using glxgears i dont see much difference.


ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: openoffice.org 1:3.0.1-9ubuntu3
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: openoffice.org
Uname: Linux 2.6.27-11-generic i686

[lspci]
00:00.0 Host bridge [0600]: Silicon Integrated Systems [SiS] 655 Host [1039:0655] (rev 50)
     Subsystem: ASUSTeK Computer Inc. Device [1043:80aa]
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc R420 JK [Radeon X800] [1002:4a4b]
     Subsystem: ATI Technologies Inc Device [1002:4422]