HPC/Network Access/Virtual Desktop - Revision history

Stern: /* Screen Sharing on the Mac */

2020-01-17T21:33:17Z

Screen Sharing on the Mac

← Older revision		Revision as of 21:33, January 17, 2020
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	=== Screen Sharing on the Mac ===		=== Screen Sharing on the Mac ===
	[[Image:HPC ~~2012~~-10-04 VNC in Screen Sharing Preferences.png\|350px\|right\|Screen Sharing ~~preferences under OS X version~~ 10.~~8.2~~.]]		[[Image:HPC 2020-01 VNC Screen Sharing Preferences 1.png\|350px\|right\|Screen Sharing, Preferences, Display (macOS 10.14).]]
			[[Image:HPC 2020-01 VNC Screen Sharing Preferences 2.png\|350px\|right\|Screen Sharing, Preferences, Quality (macOS 10.14).]]
	* Recent Screen Sharing versions will pass through almost all keyboard input, which effectively disables many regular OS X keyboard shortcuts, in particular those for switching applications and taking screen shots.		* Recent Screen Sharing versions will pass through almost all keyboard input, which effectively disables many regular OS X keyboard shortcuts, in particular those for switching applications and taking screen shots.
	* To switch from Screen Sharing to another application, click on its Dock icon.		* To switch from Screen Sharing to another application, click on its Dock icon.
	* To take a screen shot, select Save Screen Capture As… from the Connection menu of the Screen Sharing application menu.		* To take a screen shot, select Save Screen Capture As… from the Connection menu of the Screen Sharing application menu.
	* To take screen shots more easily and use various other control options, choose Show Toolbar from the View menu of the Screen Sharing application menu.		* To take screen shots more easily and use various other control options, choose Show Toolbar from the View menu of the Screen Sharing application menu.
	The screen shots ~~shown here~~ were taken ~~on a Mac with~~ macOS 10.8. ~~Later~~ OS versions will look slightly differently.		The screen shots were taken under macOS 10.14. Other OS versions will look slightly differently.

	: [[Image:HPC 2012-10-04 VNC in Screen Sharing Connection menu.png\|450px]] [[Image:HPC 2012-10-04 VNC in Screen Sharing View menu.png\|450px]]		: [[Image:HPC 2012-10-04 VNC in Screen Sharing Connection menu.png\|450px]] [[Image:HPC 2012-10-04 VNC in Screen Sharing View menu.png\|450px]]

Stern: /* Screen Sharing on the Mac */

2020-01-17T21:26:43Z

Screen Sharing on the Mac

← Older revision		Revision as of 21:26, January 17, 2020
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	=== Screen Sharing on the Mac ===		=== Screen Sharing on the Mac ===
	~~The screen shots shown here were taken on a Mac running OS X version 10.8.2; Screen Sharing under other OS X versions will look and behave slightly differently.~~

	[[Image:HPC 2012-10-04 VNC in Screen Sharing Preferences.png\|350px\|right\|Screen Sharing preferences under OS X version 10.8.2.]]		[[Image:HPC 2012-10-04 VNC in Screen Sharing Preferences.png\|350px\|right\|Screen Sharing preferences under OS X version 10.8.2.]]
	* Recent Screen Sharing versions will pass through almost all keyboard input, which effectively disables many regular OS X keyboard shortcuts, in particular those for switching applications and taking screen shots.		* Recent Screen Sharing versions will pass through almost all keyboard input, which effectively disables many regular OS X keyboard shortcuts, in particular those for switching applications and taking screen shots.
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	* To take a screen shot, select Save Screen Capture As… from the Connection menu of the Screen Sharing application menu.		* To take a screen shot, select Save Screen Capture As… from the Connection menu of the Screen Sharing application menu.
	* To take screen shots more easily and use various other control options, choose Show Toolbar from the View menu of the Screen Sharing application menu.		* To take screen shots more easily and use various other control options, choose Show Toolbar from the View menu of the Screen Sharing application menu.
			The screen shots shown here were taken on a Mac with macOS 10.8. Later OS versions will look slightly differently.

	: [[Image:HPC 2012-10-04 VNC in Screen Sharing Connection menu.png\|450px]] [[Image:HPC 2012-10-04 VNC in Screen Sharing View menu.png\|450px]]		: [[Image:HPC 2012-10-04 VNC in Screen Sharing Connection menu.png\|450px]] [[Image:HPC 2012-10-04 VNC in Screen Sharing View menu.png\|450px]]

Stern: /* Connect with a client */

2015-07-27T16:01:40Z

Connect with a client

← Older revision		Revision as of 16:01, July 27, 2015
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	: [[Image:HPC 2012-10-04 VNC Screen Sharing warning.png\|400px]][[Image:HPC 2012-10-04 VNC Screen Sharing password.png\|400px]]		: [[Image:HPC 2012-10-04 VNC Screen Sharing warning.png\|400px]][[Image:HPC 2012-10-04 VNC Screen Sharing password.png\|400px]]

	; Update 2015-07-27: When running vncserver on CentOS 6 and using the builtin Mac Screen Sharing application, the keyboard might "hang".		; Update 2015-07-27 – EL6 Bug: When running vncserver on CentOS 6 and using the builtin Mac Screen Sharing application, the keyboard might "hang".
	It appears this is a bug in the TigerVNC package that has replaced the RealVNC package in CentOS-6.		: Background: It appears this is a bug in the TigerVNC package that has replaced the RealVNC package in CentOS-6.
			: '''Workaround:''' download and use the [https://bintray.com/tigervnc TigerVNC application] for Mac and use its VNC viewer instead of Mac's Screen Sharing.
	~~As a~~ ''~~workaround~~'', download and use the TigerVNC ''viewer'~~' application on Mac~~.

	; On WIndows:		; On WIndows:

Stern: /* Connect with a client */

2015-07-27T15:59:34Z

Connect with a client

← Older revision		Revision as of 15:59, July 27, 2015
Line 48:		Line 48:
	* Enter the VNC password you chose earlier.		* Enter the VNC password you chose earlier.
	: [[Image:HPC 2012-10-04 VNC Screen Sharing warning.png\|400px]][[Image:HPC 2012-10-04 VNC Screen Sharing password.png\|400px]]		: [[Image:HPC 2012-10-04 VNC Screen Sharing warning.png\|400px]][[Image:HPC 2012-10-04 VNC Screen Sharing password.png\|400px]]

			; Update 2015-07-27: When running vncserver on CentOS 6 and using the builtin Mac Screen Sharing application, the keyboard might "hang".
			It appears this is a bug in the TigerVNC package that has replaced the RealVNC package in CentOS-6.

			As a ''workaround'', download and use the TigerVNC ''viewer'' application on Mac.

	; On WIndows:		; On WIndows:

Stern: /* Avoiding multiple VNC sessions */

2014-09-18T18:31:24Z

Avoiding multiple VNC sessions

← Older revision		Revision as of 18:31, September 18, 2014
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	vncserver -l		vncserver -l
	</source>		</source>
	: Unfortunately, this command shows desktops on only the current node. To see a list of your current and past connections on all nodes, inspect the VNC log files:		: Unfortunately, this command shows desktops on only the current node, but you may have a VNC session running on a different login node. To see a list of your current and past connections on all nodes, inspect the VNC log files:
	<source lang="bash">		<source lang="bash">
	ls -ltr ~/.vnc		ls -ltr ~/.vnc
	</source>		</source>
	: This can be a bit of a jumble, as files from old connections will linger even after they were cleanly disconnected. Pay attention to the ''file dates''.		: This can be a bit of a jumble, as files from old connections will linger even after they were cleanly disconnected. Pay attention to the ''file dates''.
	* ~~You may have a VNC session running on a different login node.~~ To use an existing session or clean up, [[HPC/Network Access/SSH Tunnel Setup on Linux and MacOS#Advanced: Connecting to a specific login node\|log in to the specific node]].		* To use an existing session or clean up, [[HPC/Network Access/SSH Tunnel Setup on Linux and MacOS#Advanced: Connecting to a specific login node\|log in to the specific node]].

	=== Customizing the virtual desktop ===		=== Customizing the virtual desktop ===

Stern: /* Avoiding multiple VNC sessions */

2014-09-18T18:30:31Z

Avoiding multiple VNC sessions

← Older revision		Revision as of 18:30, September 18, 2014
Line 84:		Line 84:
	vncserver -l		vncserver -l
	</source>		</source>
	: Unfortunately, this command shows desktops on only the current host. You may have a VNC session running on a different login node. To use an existing session or clean up, [[HPC/Network Access/SSH Tunnel Setup on Linux and MacOS#Advanced: Connecting to a specific login node~~\|log in to the specific node]]~~.		: Unfortunately, this command shows desktops on only the current node. To see a list of your current and past connections on all nodes, inspect the VNC log files:
	* To see a list of your current and past connections, inspect the VNC log files:
	<source lang="bash">		<source lang="bash">
	ls -ltr ~/.vnc		ls -ltr ~/.vnc
	</source>		</source>
	: This can be a bit of a jumble, as files from old connections will linger even after they were cleanly disconnected. Pay attention to the ''file dates''.		: This can be a bit of a jumble, as files from old connections will linger even after they were cleanly disconnected. Pay attention to the ''file dates''.
			* You may have a VNC session running on a different login node. To use an existing session or clean up, [[HPC/Network Access/SSH Tunnel Setup on Linux and MacOS#Advanced: Connecting to a specific login node\|log in to the specific node]].

	=== Customizing the virtual desktop ===		=== Customizing the virtual desktop ===

Stern: /* Avoiding multiple VNC sessions */

2014-09-18T18:30:00Z

Avoiding multiple VNC sessions

← Older revision		Revision as of 18:30, September 18, 2014
Line 84:		Line 84:
	vncserver -l		vncserver -l
	</source>		</source>
	* You may have a VNC session running on a different login node. To use an existing session or clean up, [[HPC/Network Access/SSH Tunnel Setup on Linux and MacOS#Advanced: Connecting to a specific login node\|log in to the specific node]].		: Unfortunately, this command shows desktops on only the current host. You may have a VNC session running on a different login node. To use an existing session or clean up, [[HPC/Network Access/SSH Tunnel Setup on Linux and MacOS#Advanced: Connecting to a specific login node\|log in to the specific node]].
	* To see a list of your current and past connections, inspect the VNC log files:		* To see a list of your current and past connections, inspect the VNC log files:
	<source lang="bash">		<source lang="bash">

Stern: /* Tips */

2014-09-18T18:20:21Z

Tips

@@ Line 77: / Line 77: @@
 Please practice good housekeeping and do not needlessly leave vncserver processes running.
 Stale vncserver processes (those that have not been used for days) will be killed.
 === Customizing the virtual desktop ===

Stern: /* Use the virtual desktop */

2013-12-03T20:42:35Z

Use the virtual desktop

← Older revision		Revision as of 20:42, December 3, 2013
Line 62:		Line 62:
	* Your virtual desktop will be running an [http://en.wikipedia.org/wiki/Xterm xterm] command line window and the [http://en.wikipedia.org/wiki/Motif_Window_Manager Motif Window Manager]. The desktop is deliberately kept simple to reduce overhead and startup times.		* Your virtual desktop will be running an [http://en.wikipedia.org/wiki/Xterm xterm] command line window and the [http://en.wikipedia.org/wiki/Motif_Window_Manager Motif Window Manager]. The desktop is deliberately kept simple to reduce overhead and startup times.
	: [[Image:HPC 2012-10-04 VNC running.png\|600px]] [[Image:HPC 2012-10-04 VNC MWM context menu.png]]		: [[Image:HPC 2012-10-04 VNC running.png\|600px]] [[Image:HPC 2012-10-04 VNC MWM context menu.png]]
	* You can use the virtual desktop like a regular X11 session. Use the xterm command line to run shell commands or to start graphical applications, such as ~~COMSOL~~.		* You can use the virtual desktop like a regular X11 session. Use the xterm command line to run shell commands or to start graphical applications, such as the Jmol molecular visualization application.
	$ echo $DISPLAY		$ echo $DISPLAY
	:1.0		:1.0
	$ module load ~~comsol~~		$ module load jmol
	$ ~~comsol &~~		$ jmol
	* To open another terminal window, run the command <code>xterm &</code> or right-click and select New Window.		* To open another terminal window, run the command <code>xterm &</code> or right-click and select New Window.

Stern: /* Troubleshooting */

2013-01-15T16:42:04Z

Troubleshooting

← Older revision		Revision as of 16:42, January 15, 2013
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	root 0x281, subw 0x600002, time 784185758, (35,33), root:(39,55),		root 0x281, subw 0x600002, time 784185758, (35,33), root:(39,55),
	state 0x0, '''button 3''', same_screen YES		state 0x0, '''button 3''', same_screen YES
	* You can simply and unceremoniously kill all vncservers on a given host by using the Unix kill command. For good measure, run it twice, then clean up:		* You can simply and unceremoniously kill all your vncservers on a given host by using the Unix kill command. For good measure, run it twice, then clean up:
	kill `cat ~/.vnc/$HOSTNAME*.pid`		kill `cat ~/.vnc/$HOSTNAME*.pid`
	kill `cat ~/.vnc/$HOSTNAME*.pid`		kill `cat ~/.vnc/$HOSTNAME*.pid`