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25 Jul 2018
Glad to announce of release of INDI Library v1.7.4 on 2018-07-25. A few drivers were added in this release as we continue to improve & stabilize existing drivers.
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TOPIC: Cannot launch KStars through VNC

Cannot launch KStars through VNC 2 weeks 8 hours ago #29477

Strange that a second window manager is created. As I said, I use vino and make sure that
- the Odroid user get automatically logged in
- vino is a start up application for the Odroid user
- vino is configured NOT to use encryption

And then I can connect to the same instance as when an HDMI cable is connected. The xorg.conf file I use is
Section "Device"
Identifier      "ODROID"
Driver "armsoc"
Option "Debug"         "false"
Option "DPMS"          "false"
    Option      "NoFlip"    "false"
Option "NoHardwareMouse" "true"
    Option      "NoG2D"     "false"
EndSection

Section "ServerLayout"
Identifier      "Default Layout"
Option "BlankTime"     "0"
Option "StandbyTime"   "0"
Option "SuspendTime"   "0"
Option "OffTime"       "0"
EndSection

Section "DRI"
Mode            0666
EndSection

Section "Screen"
Identifier      "Default Screen"
Device "Mali-Fbdev"
DefaultDepth    24
        SubSection "Display"
            Virtual 1400 1050
        EndSubSection
EndSection

and I don't use xrandr.

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Modded Canon EOS 700D with a WO ZS 71 ED on a SW HEQ5-Pro /
QHY9 CCD and filter wheel with an 8" RC on a SW EQ6-R
Last Edit: by wvreeven.

Cannot launch KStars through VNC 2 weeks 8 hours ago #29478

Thanks wvreeven. I tried Vino, and it works perfectly well, i.e. the screen is replicated on the VNC client (I just needed to disable encryption in Vino as the encryption method is not supported by the traditional VNC clients). However Vino does not work for me since it requires to have a Gnome session opened on a connected screen and I want to be able to use the Odroid headless. This is why in a first place I turned myself to a VNC server that supports XVnc... So I am still stuck at the moment with the X11 error and my best chance might be to downgrade the Qt layer.

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Cannot launch KStars through VNC 2 weeks 6 hours ago #29480

be careful you haven't got more than one server running or even installed !!!!
I use x11vnc (there are too many to choose from - typical Linux :-) ) headless but with a dummy HDMI else I get a slow screen when no HDMI attached. I start up my Up Core headless wait for the network (ping address until it appears) and then do my VNCviewer from my Laptop/Desktop or whatever (mixture Windows vista,10) - it works

I normally use Realvnc server ,as per RPI, as it works everytime but could not successfully get this to work on the Up Core.

Hope you get sorted with something that works for you - clear skies

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RPI3 Ubuntu 16.04 / AMD desktop Kstars under Ubuntu 16.04 Mounts :azeq6 ,SWAZGoTo

RPI3 Fedora testing out on AMD desktop Fedpra 28 - running kstars 2.9.4 , Indilib 1.7.4 ?????

Cannot launch KStars through VNC 1 week 5 days ago #29522

Hi everyone
latest kstars from nightly ppa.
Not sure whether this is relevant for the OP's 16.04 but in 18.04, there is screen sharing. I can start kstars from my android tablet; I just grabbed the first vnc app I found in google play. HTH.
Attachments:

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ubuntu 18.04
700d, eq6, t7m

Cannot launch KStars through VNC 1 week 4 days ago #29548

Thanks alacant for your answer. I think this is the same as vino in Ubuntu 16.04 (see the post from wvreeven above). This works well, but you need to have a display connected to the Odroid (or any other platform running KStars), it does not work for a headless platform.
The following user(s) said Thank You: stash

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Cannot launch KStars through VNC 1 week 4 days ago #29549

Phil31000 wrote: Thanks alacant for your answer. I think this is the same as vino in Ubuntu 16.04 (see the post from wvreeven above). This works well, but you need to have a display connected to the Odroid (or any other platform running KStars), it does not work for a headless platform.


Hi. Just plug a cheap adaptor into the hdmi.
HTH.

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ubuntu 18.04
700d, eq6, t7m
Last Edit: by alacant.

Cannot launch KStars through VNC 1 week 4 days ago #29551

No eBay APP ID défined in Kunena configurationYou dont need a display or a display adapter ,as Alacant suggested, you just need a Dummy HDMI plug like this (wasn't allowed an ebay link so google dummy hdmi plug)- it fools Linux into thinking there is a real monitor connected and so gives you headless platform. I know because I use one with my Up Core - its not perfect as the refresh rate can be seen but it gives you a workable headless set up quickly.

If you can then find a better way great please post one that works for ALL Linux platforms - Holy Grail would be easier to find LOL

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RPI3 Ubuntu 16.04 / AMD desktop Kstars under Ubuntu 16.04 Mounts :azeq6 ,SWAZGoTo

RPI3 Fedora testing out on AMD desktop Fedpra 28 - running kstars 2.9.4 , Indilib 1.7.4 ?????
Last Edit: by stash.

Cannot launch KStars through VNC 1 week 4 days ago #29553

Thanks to bot of you. Yes, I reached the same conclusion, I am going in a first time to plug a dummy HDMI plug (just a few Euros). I will however continue to monitor the issue in case I can find a solution. Thanks again.
The following user(s) said Thank You: stash

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Cannot launch KStars through VNC 1 week 4 days ago #29556

I am using my Odroid without an HDMI dummy or real display connected via VNC all the time without problems. For this I use the Xorg.conf file I posted earlier. Doesn’t that work for you?

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Modded Canon EOS 700D with a WO ZS 71 ED on a SW HEQ5-Pro /
QHY9 CCD and filter wheel with an 8" RC on a SW EQ6-R

Cannot launch KStars through VNC 1 week 3 days ago #29585

wvreeven wrote: I am using my Odroid without an HDMI dummy or real display connected via VNC all the time without problems. For this I use the Xorg.conf file I posted earlier. Doesn’t that work for you?

Yes, thanks, I tied the Xorg.conf file you provided. It actually prevented my main screen to work as I think all the settings do not apply to my configuration (I just got a black screen on the main display). But this is a good point, if you tell me it works for you with a headless configuration, I will definitely investigate more and test some of the parameters you have set. I'll keep you informed. Thanks again.

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