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other:x_conf [2022/08/09 15:46] jypeter [What is an X server?] Note about DISPLAY, and foreword |
other:x_conf [2022/08/10 06:58] jypeter [Nothing works!] Increased the level of the sub-sections |
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===== Troubleshooting ===== | ===== Troubleshooting ===== | ||
+ | ==== Can't start a graphical application by clicking on its desktop shortcut ==== | ||
+ | |||
+ | Check the shortcut and run the command directly in a terminal to check the error message | ||
+ | |||
+ | There is a good chance that you have forgotten to start the X server! | ||
==== Nothing works! ==== | ==== Nothing works! ==== | ||
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* Is the [[other:x_conf#what_is_an_x_server|DISPLAY variable]] defined correctly on the local and remote computer? | * Is the [[other:x_conf#what_is_an_x_server|DISPLAY variable]] defined correctly on the local and remote computer? | ||
- | === When DISPLAY is not defined correctly === | + | ==== Error when DISPLAY is not defined correctly ==== |
If the ''DISPLAY'' **variable is not defined (correctly)**, you will get a ''Can't open display: //[NO VALUE DISPLAYED HERE]//'' error | If the ''DISPLAY'' **variable is not defined (correctly)**, you will get a ''Can't open display: //[NO VALUE DISPLAYED HERE]//'' error | ||
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Make sure that you are using ''ssh -X'' or ''ssh -Y'', or that [[other:putty_conf#changing_some_useful_settings|PuTTY is configured]] with ''Enable X11 forwarding'' | Make sure that you are using ''ssh -X'' or ''ssh -Y'', or that [[other:putty_conf#changing_some_useful_settings|PuTTY is configured]] with ''Enable X11 forwarding'' | ||
- | === When there is no X server running === | + | ==== Error when there is no X server running ==== |
If the ''DISPLAY'' variable is defined, but there is **no X server**, you will get a ''Can't open display: localhost://[SOME VALUE]//'' error\\ <code>$ xterm & | If the ''DISPLAY'' variable is defined, but there is **no X server**, you will get a ''Can't open display: localhost://[SOME VALUE]//'' error\\ <code>$ xterm & |