I have a server that I am experimenting with, and sometimes I want to work from home so I installed the 'ssh daemon' (namely, 'sshd') and I can ssh to the server. This works fine. But when I try to run a virtual machine on the server with 'qemu', I get the following error Could not initialize SDL(No available video device) - exiting.
Is it possible to run qemu via ssh connection?
Note, I do not want to see the visual interface to the VM that I'm launching. I just want to to run.
Try qemu -curses
or qemu -nographic
to bypass the SDL
Best way to resolve this is to add -X to your ssh parameters.
e.g. ssh -X user#server
This will allow the window created by QEMU to be X-Forwarded through SSH to you. It doesn't matter if you want to view the window or not, if QEMU can't open it, it will consider it a fatal error and you will get the error you described.
You can disable the video card:
qemu -vga none (...options...)
You could also pipe the screen to VNC instead of SDL - the following will provide a VNC server on port 5901:
qemu -vnc :1 (...options...)
qemu-system-i386 -curses works like charm..
And to exit from that, use ESC + 2 then q + ENTER.
I had this problem too.
I think bitwise can't open a new terminal window like qemu does.
You can write make clean qemu-nox in terminal, instead of just make clean qemu and it will launch it in the same window.
This worked for me
Related
I am using versions:
ESXI 6.5.0 Update 3 (Build 14990892)
Power CLI VMware PowerCLI 11.0.0 build 10380590.
I have a VM that I am importing (ISO) into an ESXI and trying to set Autostart on the VM to "enabled" programmatically via some scripts, but it is not working. I am using the powercli command:
Set-VMHostStartPolicy (Get-VMHost | Get-VMHostStartPolicy) -Enabled:$true
I've also tried some variants of this command but none seem to work. I see the "event" get logged as "Reconfigure Autostart" under the "Recent Tasks" menu on the ESXI Web GUI as soon as I input the command, so its definitely configurating something, but when I double-check the state of the VM to see if Autostart is enabled, it still lists "Enable" as an option, implying Autostart is NOT enabled. Here's a screenshot:
Can anyone help me please? I just want to have this VM start automatically incase there is a power outage or server crash; But only in these cases, I want it to import powered OFF for the first time (as you can see in screen shot the EPS VM is imported but in a powered down state, which is what I want)
I think what you're doing is setting the host's default policy... You would think that would work. I'm using this code on ESXi 7.0 Update 1 to set the guest's policy:
$vmstartpolicy = Get-VM "$vm_name" | Get-VMStartPolicy
Set-VMStartPolicy -StartPolicy $vmstartpolicy -StartAction PowerOn
It has the same issue that it doesn't show in the web UI, (which somebody will complain about, and I'll have to fix) but it does auto-start the VM after a reboot, so at least it's a start (pun not intended).
Edit: After playing around a bit, I managed to find a solution that updates the UI.
plink -batch -ssh $user#$IP -l "$user" -pw "$password" vim-cmd hostsvc/autostartmanager/update_autostartentry "`$(vim-cmd vmsvc/getallvms | grep `"$vm_name`" | awk '{print `$1}')" "PowerOn" 0 1 "systemDefault" "systemDefault" "systemDefault"
Using plink to ssh into the host and run this vim-cmd, it updates the UI properly. Take note of the back-ticks (`) to escape the dollar signs (except the one with the $vm_name variable) and quotes in the sub command, so that powershell doesn't try to interpret them before sending them through the ssh tunnel. All the sub command does is get the all the VMs, use grep to filter down to the output line with the vm_name you specify, and use awk to print only the 1st column (the vm id required for the outer vim-cmd).
I use Ubuntu 18.04 on a WSL system and usually log on a Linux server through ssh to get some work done. When I activate 'screen' and use the tab key to autocomplete commands, my cursor goes to the end of line, and the formatting of my entire terminal breaks from then on.
When using vim in that condition on a screen terminal, if I go to the end of file and press down on more time, it erases the last line from the terminal.
It seems a kind of misinterpretation of some terminal signal. When using Putty or any other ssh client under the same circumstances, everything works fine, so I am pretty sure it is a problem with WSL environment, specifically.
Any ideas about what is the main issue and how to solve it?
I just came across this same exact issue and it appears to be a possible bug with Windows Console and certain $TERM values.
I have this problem when $TERM is set to screen-256color. The problem went away after setting $TERM to xterm-256color in .screenrc
$ cat ~/.screenrc
term xterm-256color
The Question
I'm trying to enable X11 forwarding through the PyCharm SSH Terminal which can be executed via
"Tools -> Start SSH session..."
Unfortunately, It seems there is no way of specifying the flags like I would do in my shell for enabling the X11 Forwarding:
ssh -X user#remotehost
Do you know some clever way of achieving this?
Current dirty solution
The only dirty hack I found is to open an external ssh connection with X11 forwarding and than manually update the environment variable DISPLAY.
For example I can run on my external ssh session:
vincenzo#remotehost:$ echo $DISPLAY
localhost:10.0
And than set on my PyCharm terminal:
export DISPLAY=localhost:10.0
or update the DISPLAY variable in the Run/Debug Configuration, if I want to run the program from the GUI.
However, I really don't like this solution of using an external ssh terminal and manually update the DISPLAY variable and I'm sure there's a better way of achieving this!
Any help would be much appreciated.
P.s. Making an alias like:
alias ssh='ssh -X'
in my .bashrc doesn't force PyCharm to enable X11 forwarding.
So I was able to patch up jsch and test this out and it worked great.
Using X11 forwarding
You will need to do the following to use X11 forwarding in PyCharm:
- Install an X Server if you don't already have one. On Windows this might be the VcXsrv project, on Mac OS X the XQuartz project.
- Download or compile the jsch package. See instructions for compilation below.
- Backup jsch-0.1.54.jar in your pycharm's lib folder and replace it with the patched version. Start Pycharm with a remote environment and make sure to remove any instances of the DISPLAY environment variable you might have set in the run/debug configuration.
Compilation
Here is what you need to do on a Mac OS or Linux system with Maven installed.
wget http://sourceforge.net/projects/jsch/files/jsch/0.1.54/jsch-0.1.54.zip/download
unzip download
cd jsch-0.1.54
sed -e 's|x11_forwarding=false|x11_forwarding=true|g' -e 's|xforwading=false|xforwading=true|g' -i src/main/java/com/jcraft/jsch/*.java
sed -e 's|<version>0.1.53</version>|<version>0.1.54</version>|g' -i pom.xml
mvn clean package
This will create jsch-0.1.54.jar in target folder.
Update 2020:
I found a very easy solution. It may be due to the updated PyCharm version (2020.1).
Ensure that X11Forwarding is enabled on server: In /etc/ssh/sshd_config set
X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost no
On client (MacOS for me): In ~/.ssh/config set
ForwardX11 yes
In PyCharm deselect Include system environment variables. This resolves the issue that the DISPLAY variable gets set to the system variable.
EDIT: As seen in the below image it works. For example I used the PyTorch implementation of DeepLab and visualize sample images from PASCAL VOC:
X11 forwarding was implemented in 2021.1 for all IntelliJ-based IDEs. If it still doesn't work, please consider creating a new issue at youtrack.jetbrains.com.
By the way, the piece of advice about patching jsch won't work for any IDE newer than 2019.1.
In parallel, open MobaXTerm and connect while X11 forwarding checkbox is enabled. Now PyCharm will forward the display through MobaXTerm X11 server.
This until PyCharm add this 'simple' feature.
Also, set DISPLAY environment variable in PyCharm run configuration like this:
DISPLAY=localhost:10.0
(the right hand side should be obtained with the command echo $DISPLAY in the server side)
Update 2022: for PyCharm newer than 2022.1: Plotting in SciView works by only setting ForwardX11 yes in .ssh/config (my laptop OS is ubuntu 22.04). I did not set any other parameters either on the server or local side.
I'm trying to build a Webkit Kiosk on a Raspberry Pi.
I found a good start at: https://github.com/pschultz/kiosk-browser
The things I want to do:
1) Start the kiosk without logging in (with inittab?)
Peter Schultz pointed out adding the following line:
1:2345:respawn:/usr/bin/startx -e /usr/bin/browser http://10.0.0.5/zfs/monitor tty1 /dev/tty1 2>&1
But he did not explain the steps to make this work (for noobs).
What I did is add his code to a personal git repository and cloned this repo to /usr/bin/kiosk and sudo apt-get install libwebkit-dev and sudo make.
The line to add to inittab will be:
1:2345:respawn:/usr/bin/startx -e /usr/bin/kiosk/browser http://my-kiosk-domain.com tty1 /dev/tty1 2>&1
If I do this, I generate a loop or some kind...
If you want to automatically load a browser full screen in kiosk mode every time you turn on the rpi you can add one of these two lines to the file /etc/xdg/lxsession/LXDE/autostart
#chromium --kiosk --incognito www.google.it
#midori -i 120 -e Fullscreen -a www.google.it -p
The first is for chromium and the latter is for midori, the rpi default lightweight browser.
Hint : Since we will use the rpi as a kiosk we want to prevent the screen from going black and disable the screensaver. Edit the autostart file:
sudo pico /etc/xdg/lxsession/LXDE/autostart
find the following line and comment it using a # (it should be located at the bottom)
##xscreensaver -no-splash
and append the following lines
#xset s off
#xset -dpms
#xset s noblank
Save, reboot.
More info on
http://pikiosk.tumblr.com/post/38721623944/setup-raspberry-ssh-overclock-sta
The upvoted answer suggest to run LXDE for it. You could also do it without such a heaver desktop enviorment. You could just start midori or chromium in an X session:
xinit /usr/bin/midori -e Fullscreen -a http://www.examples.com/
xinit chromium --kiosk http://www.examples.com/
Sometimes Fullscreen mode of midori is not working as expected and midori is not using whole screen. In these cases you could map it inside a very simple window manager like MatchBox to get real fullscreen. Due to xinit you have to wrap everything in a shell script.
#!/bin/sh
matchbox-window-manager &
midori -e Fullscreen -a http://dev.mobilitylab.org/TransitScreen/screen/index/11
Autostart could be done simply be using /etc/rc.local.
More information concerning screensaver issues and an automated restart could be found here: https://github.com/MobilityLab/TransitScreen/wiki/Raspberry-Pi#running-without-a-desktop
Chromium has a dependency problem on some debian derivate for arm architecture. For Cubian you find the bug report here. I am not sure if you could install chromium on latest Raspbian without problem.
But I really could recommend midori. It's very fast and support for modern web technologies is very good. As Chromium it is using webkit as rendering engine. If you miss some html5 / css3 features consider an update of libwebkitgtk (for example by using package of debian testing).
It's possible you haven't set the DISPLAY environment variable.
Try:
export DISPLAY=:0
/usr/bin/startx /usr/bin/browser
Or, browser can also take a display argument (so you don't need the environment variable):
/usr/bin/startx /usr/bin/browser :0
This works for me on Raspbian from a standard terminal shell (I'm logged in over SSH).
Updated for the current version of Raspbian (with Pixel desktop) install with noop 2.0.
I found you need to edit in two different places to get it to work.
/etc/xdg/lxsession/LXDE/autostart
/home/pi/.config/lxsession/LXDE-pi/autostart
So my configure file is:
# #xscreensaver -no-splash
#xset s off
#xset -dpms
#xset s noblank
#chromium-browser --kiosk --incognito http://localhost
And that's it.
You should probably start with checking if /usr/bin/kiosk/browser is working at all. You should start normal X session (graphical environment) on your RaspberryPi, launch terminal, try running this command:
/usr/bin/kiosk/browser http://my-kiosk-domain.com
and see what it prints on the terminal. Is this working? Do you see any error messages?
I'm trying to build a Webkit Kiosk on a Raspberry Pi.
I think Instant WebKiosk for Raspberry Pi could be useful for you.
See: http://www.binaryemotions.com/raspberry-digital-signage/
I have a SSH address that I connect through command line, but I would like to have a GUI option to make my work easier. So is it possible to connect through ssh using remote desktop on Lubuntu 11.10? Thanks
This may be what you're looking for:
https://wiki.edubuntu.org/Lubuntu/RemoteDesktop
x11vnc server for use with Lubuntu. Download via Synaptic.
It can be run for single use from a terminal:-
x11vnc -display :0
It is more useful when run like:
x11vnc -forever -display :0
...so you can connect/disconnect/reconnect when needed.
I run it from a simple script that auto runs on startup. Create a new file called "startvnc.sh" and add this:-
#!/bin/sh x11vnc -forever -display :0
...then put it in /usr/bin (which is in the $PATH) and make it executable.
Then to autostart, in terminal:-
sudo leafpad /etc/xdg/lxsession/Lubuntu/autostart
...and add this at the end of this file:-
#startvnc.sh
You should be able to connect via almost any remote vnc client like this: {IP}::{port}
e.g. 192.168.0.7::5902