![[Buy Opera for your platform!]](../buy_opera.png "Buy the Opera Browser!"){kind=small}
Some people are having problems finding articles in Opera's Knowledge Base. The following are direct links to the corresponding Knowledge Base articles from Opera's Support Desk. The description only lists the first paragraph to give you an overview of all articles. Click the headline to open the article in a new window.
If you have problems using a foreground or background skin with Opera, this could be because you are using KDE with the Liquid theme. This particular theme seems to prevent Opera from using skins properly. [...]
You can set KNode to open links in Opera by opening Settings > Configure KNode > Reading News > Viewer in KNode. Under "Browser", set "Open links with" to "Opera", or select "Other" and use the following command to launch Opera with an URL: opera %u [...]
If you are using Debian (Woody) and have problems finding Java even though you have followed the instructions in this article, the problem could be that you are missing an important Debian package. The "java-common" package is necessary to install in order to use Java. [...]
If you experience a lot of crashing or freezing when using Opera with Red Hat 6.2, it might not be Opera's fault, but is actually a bug in glibc. [...]
Registered user of Opera 5.x for Linux qualify for a free upgrade to Opera 6.x on the same platform. Please download our newest 6.x version and use your registration code for Opera 5.x to register. [...]
Despite the somewhat misleading name, Lindows is not a hybrid between Windows and GNU/Linux. It is a Linux distribution. If you are using Lindows and wish to download Opera, please download the Linux version. [...]
In order to use anti-aliasing with Opera, you need two things to get started: 1. The dynamic/shared version of Opera (dynamically linked to Qt) 2. The correct version of Qt. [...]
Opera 5.05 (and newer) for Linux requires that you have Motif (libXm.so.2) installed on your system if you want Netscape plugin support. If you do not wish to use Netscape plugins, you can force an install, as Motif is only used for Netscape plugins. [...]
This is a list of flags and more that can be set in opera6.ini. These cannot be set from inside Opera. In addition to these hidden .ini settings, a few extra keyboard shortcuts are listed towards the end of the document. [...]
If you are having this problem, please download Opera 6.0 beta 2 or newer. Opera 6.0 beta 1 is dynamically linked to libpng.so.2. Mandrake 8.2 and certain other distributions come with libpng.so.3, but not the older version. For this reason, Opera 6.0 beta 2 and newer versions are linked statically to libpng. [...]
Some will find that the name of the Java plugin, listed in File > Preferences > Multimedia > Plug-ins, even though it is installed correctly, shows up as a number of random/garbled characters. This is a known problem, but we have not been able to find a solution. [...]
Opera 6 can sometimes be slow when used with a remote display. This did not happen with Opera 5. The slowdown happens because of alpha blending of the toolbar buttons (the buttons use transparency). [...]
Opera 5.05 or newer is required for Netscape plugin and Java support. Important: Opera versions between (and including) 5.05 and 6.03 use the Java plugin. Opera 6.1 and later use Java directly for better compatibility. For this reason, the installation instructions are slightly different. [...]
To view the source of documents Ctrl+F3 and frames Alt+F3 you need to configure a source viewer first. [...]
The following specifiers are supported by Opera for Linux when passing mailto-links on to an external e-mail client: [...]
You may have disabled or set window history to 0 lines under File > Preferences > Network > History and cahce. Let's say you only want a back/forward history of 10 lines per window. Enable window history and set it to 10 lines and you're there. [...]
Opera 6.0 for Windows and 6.0 TP2 for Linux have problems downloading .tar.gz files. [...]
The system administrator can define system wide default settings for Opera in two ways: Default settings for first time use or when settings are missing, and preset options that cannot be changed by the users. [...]
Opera will not usually allow you to start multiple instances, since this will cause problems. If you really want to run multiple browsers, the command is: opera -newbrowser [...]
For Java and Netscape plugin support in Opera for Linux, you need Opera 5.05 or newer. You also need to have Motif installed (reports indicate that OpenMotif works well). [...]
XFree86 3.3.5 (tested) or better, XIG or MetroX; these are the X-Windows servers we test on. We have had great success in the past with XFree86 3.3.3.1, but we haven't tested earlier than that. We've tested with Accelerated X 5.0.2 from XIG and also with MetroX 4.3.4. [...]
Linux is a free, open-source, UNIX-like operating system that was designed to provide computer users an operating system comparable to traditional and usually more expensive UNIX systems. [...]
It is recommended that you backup your files every now and then, both for Opera and for other software on your computer. This is a list of Opera files you might want to consider taking a backup of. [...]
If Opera crashes or just refuses to start when you try to run it, there are a couple of things you can try [...]
Opera for Linux uses Qt to handle the printing. Qt looks in /etc/printcap for available printers, so make sure your printers are listed there. PostScript is also required for printing. [...]
To restore your default settings, delete the file(s) "opera*.ini" in your "~/.opera" directory. This can sometimes solve problems you are suddenly experiencing. [...]
Some may see this or similar error messages when trying to open a web page: 301 Moved Permanently / 302 Found; The document has moved here. This means you have disabled "Automatic redirection" in Opera's Preferences. To fix this, turn the option on in [...]
If Opera doesn't display GIF images, you may have compiled Qt without GIF support. Recompile Qt or download the static version instead. [...]
The Linux version of Opera does not come with an e-mail client, newsreader or instant messenger client. [...]
If your installation of Debian does not come with Qt and you want to use the dynamically linked version of Opera, you can get it from kde.debian.net, or you can add the following line to your "/etc/apt/ sources.list" [...]
When installing Opera on a RedHat 7.3 system, you will get a message about a failed dependency (libXm.so.2). This library is part of Motif, which Opera uses for plugins, and [...]
Read the section related to the package format you selected. RPM, DEB, TAR.GZ, [...]
Depends on CPU (i386, ppc), Qt, package format, [...]
We are looking into ports to the following platforms/operating systems: StrongARM, SGI IRIX 6.5 or better, 32 bit, MIPS 32bit, OpenBSD, NetBSD, SCO UnixWare 7.1, SCO OpenServer 5.0.5 [...]
Here are some of Opera's features: Renders HTML 3.2 and 4.0 Pages, Executes most EcmaScript 1.1 (Ecma-262 v.3) programs, Renders CSS 1 and 2 extensions, Browses FTP Sites, Handles cookies, [...]
For a list of available command line options in Opera, run this command: opera -help
In order to pass URLs correctly to Opera from other applications in KDE, please do the following [...]
This error message means that you have downloaded a package which is dynamically linked to Qt, and either your system lacks the correct Qt version, or you haven't set the LD_LIBRARY_PATH environment variable correctly. [...]
If you see error messages like ./opera: Symbol `__vt_6QFrame' has different size in shared object, consider re-linking this means that you are using the dynamic version of Opera, and that your system either has a different version of Qt than Opera, or that your libqt was compiled with a different compiler. [...]
The instructions below are for Opera 5.x, which uses Qt 2.2.4. We recommend that most people download the static version of Opera, but for those who want to use the dynamic version, which is half the size, you will need to use the correct Qt version. [...]
This article lists the required version of Qt for the dynamic version of Opera. It is recommended that most people download the static version, as it does not require Qt.
The Standard C++ Library is required to run Opera for Linux. This library is a nightmare to statically link to a project. After some thought, we've decided that instead of linking it, we'd prefer to specify where it can be found. [...]
Opera 5.0 has been tested on several distributions, including Corel 1.0 Caldera 2.2, Debian Potato 2.2, Mandrake 6.0, 7.1, 7.2, NetBSD 1.5_BETA/i386, RedHat 6.1, 6.2, 7.0, Slackware 7, SuSE 7.0, 7.1, YellowDog 2.2 And more (newer distributions) [...]
If you see this error message, you are most probably using the dynamically compiled version of Opera 5.0 beta 8 with XFree86 4.0.x. To solve the problem, please download the static version instead. [...]
In Opera, you can set a normal global homepage, or set it to open multiple windows when it starts (recommended). [...]
If you have lost your menu bar, pressing Ctrl+F11 on your keyboard brings it back. [...]
25 October 2002
Martin Schrode
<webmaster @ schrode . net>
http://www.schrode.net/opera/support/knowledge-base.html