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Troubleshooting

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This article aims to help you when you experience problems with DDNet.‎

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Useful information for developers to debug problems are:‎

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# Crash/Assertion logs # Hardware information (GPU, CPU, RAM, operating system (e.g. Windows, Linux etc.)) - The used GPU can always be found by pressing F1 after client start. It should be highlighted in purple text. # Steps to reproduce the problem‎

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== Crashes ==‎

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Crashes are unexpected shutdowns, that are most likely caused by a bug in the DDNet code, or in other software.‎

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The rule of thumb is that, if you can reproduce the crash, you should reach out to the developers.‎

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See '''external links''' or create an issue on [https://github.com/ddnet/ddnet GitHub].‎

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Since DDNet 16 for Windows the client might create a crash log or assertion log which can be found in the [[Special:MyLanguage/FAQ#Where_is_the_DDNet_config.2C_config_directory_or_save_directory.3F|config directory under "dumps"]]. Just send them to the developers and they might be able to find useful information out of them.‎

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If the client crashes at startup, it is commonly a broken graphics driver (see the [[Special:MyLanguage/GFX_Troubleshooting| GFX Troubleshooting]]) or an antivirus software (search the internet for how to disable it for a specific application/DDNet).‎

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''Note: Not all crashes / bugs are caused by DDNet code, you should always keep your system and your drivers up to date. Only reproducable or bugs with a crash log, that indicates a bug in the DDNet code, can be fixed easily.''‎

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== Graphics problems ==‎

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If you experience graphics glitches, and the developers cannot reproduce them, there is a good chance that your graphics drivers are outdated, contain bugs or simply are abandoned by the hardware company.‎

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You can still try the following thing:‎

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'''If you have a modern GPU try to update your drivers first, all of the following steps are fallbacks that also have drawbacks (e.g. worse graphics).'''‎

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<pre> Inside the client go on Settings -> Graphics Under "Renderer" select OpenGL 1 Restart </pre>‎

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If you prefer to have a more appropriate solution for your problem, visit the [[Special:MyLanguage/GFX_Troubleshooting|GFX Troubleshooting]] page, which analysis graphics problems more specifically and gives extra details.‎

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== ALT + TAB problems ==‎

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This is most likely a graphics driver problem. However you can still try to fix it by using "Windowed Fullscreen".‎

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This is a special fullscreen mode, that makes the window act like it is fullscreen, even if it's not.‎

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''Note: There is a drawback on some systems. E.g. under Windows it might leave the Windows desktop compositor active, which results in less FPS, and in worst case more input delay.''‎

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<pre> Inside the client go on Settings -> Graphics Click on "Fullscreen" (or whatever you last selected) and choose "Windowed Fullscreen" instead </pre>‎

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''(if you experience bugs changing this mode, just restart the game once and make sure "Windowed Fullscreen" is still selected)''‎

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== Broken streaming ==‎

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When you experience a bug with streaming DDNet over discord, you are most likely using a nvidia graphics card.‎

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A user already reached out to discord, and they told him to:‎

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[https://github.com/ddnet/ddnet/issues/4711#issuecomment-1046824198 '''Toggle off the "Use our latest technology to capture my screen" setting under User Settings > Voice & Video''']‎

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If you have problems finding DDNet in nvidia shadow play.‎

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Make sure you actually use the nvidia card to play DDNet (press F1 after a client start and see the purple text saying something like "gfx [...] Vendor:", it should mention nvidia)‎

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Under Windows you can usually select the preferred graphics card under Windows' graphics options, or directly in the control panel of your graphics driver (e.g. nvidia control panel)‎

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== Network / Connection problems ==‎

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DDNet and Teeworlds network code requires a stable connection with as less ping jitter as possible.‎

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If you experience problems make sure to:‎

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# Use a LAN cable instead of Wifi # Turn off other applications on your computer and other computers in your network to tell if they are the source of the problem # Prefer DSL/Fiber over cable internet # Make sure it is not a DoS/DDoS attack on the server (did it ever work before, do other servers work fine?) # Try <code>ping -t ger2.ddnet.org</code> in cmd.exe for a few minutes, stop it with ctrl-c, and check the if the ping jumps there too or you have packet loss # Try to trace route the connection to the DDNet server (using <code>tracert ger2.ddnet.org</code> in cmd.exe) and see if there is bad routing (ask your ISP to fix it)‎

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