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exporting display like

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  exporting display like mick crane <mick.crane@gmail.com> - 2020-12-18 00:10 +0100
    Re: exporting display like Nicolas George <george@nsup.org> - 2020-12-18 00:20 +0100
      Re: exporting display like Kenneth Parker <sea7kenp@gmail.com> - 2020-12-18 01:10 +0100
        Re: exporting display like Kenneth Parker <sea7kenp@gmail.com> - 2020-12-18 01:40 +0100
          Re: exporting display like Brian <ad44@cityscape.co.uk> - 2020-12-18 09:00 +0100
      Re: exporting display like mick crane <mick.crane@gmail.com> - 2020-12-18 11:00 +0100
      Re: exporting display like Anssi Saari <as@sci.fi> - 2020-12-18 15:00 +0100
        Re: exporting display like Michael Stone <mstone@debian.org> - 2020-12-18 20:10 +0100

#229812 — exporting display like

please bear in mind I don't know what I'm doing.
It is convenient to have the one display and keyboard/mouse
I sometimes if on windows use putty/Xming to start GUI program on other 
Debian PC.
Think I used screen before so can attach/detach from running terminal 
program but with X display program is it possible to first export to 
other machine then detach and come back to it later on other machine ?
There was VNC, is that the way to do that ?

mick
-- 
Key ID    4BFEBB31

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#229813

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mick crane (12020-12-17):
> please bear in mind I don't know what I'm doing.
> It is convenient to have the one display and keyboard/mouse
> I sometimes if on windows use putty/Xming to start GUI program on other
> Debian PC.
> Think I used screen before so can attach/detach from running terminal
> program but with X display program is it possible to first export to other
> machine then detach and come back to it later on other machine ?
> There was VNC, is that the way to do that ?

xpra is probably the program you are looking for.

Regards,

-- 
  Nicolas George

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#229814

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On Thu, Dec 17, 2020, 6:12 PM Nicolas George <george@nsup.org> wrote:

> mick crane (12020-12-17):
> > please bear in mind I don't know what I'm doing.
> > It is convenient to have the one display and keyboard/mouse
> > I sometimes if on windows use putty/Xming to start GUI program on other
> > Debian PC.
> > Think I used screen before so can attach/detach from running terminal
> > program but with X display program is it possible to first export to
> other
> > machine then detach and come back to it later on other machine ?
> > There was VNC, is that the way to do that ?
>
> xpra is probably the program you are looking for.


Is xpra being updated for Python Version 3?  (Google found it in Buster
(2.4.3+dfsg1-1), but gave me an error, when I searched for it on Bullseye).

Kenneth Parker

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#229815

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On Thu, Dec 17, 2020 at 7:08 PM Kenneth Parker <sea7kenp@gmail.com> wrote:

>
>
> On Thu, Dec 17, 2020, 6:12 PM Nicolas George <george@nsup.org> wrote:
>
>> mick crane (12020-12-17):
>> > please bear in mind I don't know what I'm doing.
>> > It is convenient to have the one display and keyboard/mouse
>> > I sometimes if on windows use putty/Xming to start GUI program on other
>> > Debian PC.
>> > Think I used screen before so can attach/detach from running terminal
>> > program but with X display program is it possible to first export to
>> other
>> > machine then detach and come back to it later on other machine ?
>> > There was VNC, is that the way to do that ?
>>
>> xpra is probably the program you are looking for.
>
>
> Is xpra being updated for Python Version 3?  (Google found it in Buster
> (2.4.3+dfsg1-1), but gave me an error, when I searched for it on Bullseye).
>

Update:  When I tried to install xpra on Bullseye, the error message was,
"Package xpra is not available, but is referred to by another package".

Thanks in advance!

Kenneth Parker

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#229818

On Thu 17 Dec 2020 at 19:35:54 -0500, Kenneth Parker wrote:

> Update:  When I tried to install xpra on Bullseye, the error message was,
> "Package xpra is not available, but is referred to by another package".

Use

  https://www.debian.org/distrib/packages

to to search for xpra and bring up its package description page. From
there go to Developer Information. The reason why xpra is not in testing
should be indicated there.

-- 
Brian. 

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#229819

On 2020-12-17 23:11, Nicolas George wrote:
> mick crane (12020-12-17):
>> please bear in mind I don't know what I'm doing.
>> It is convenient to have the one display and keyboard/mouse
>> I sometimes if on windows use putty/Xming to start GUI program on 
>> other
>> Debian PC.
>> Think I used screen before so can attach/detach from running terminal
>> program but with X display program is it possible to first export to 
>> other
>> machine then detach and come back to it later on other machine ?
>> There was VNC, is that the way to do that ?
> 
> xpra is probably the program you are looking for.

looks ideal, thanks

-- 
Key ID    4BFEBB31

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#229820

Nicolas George <george@nsup.org> writes:

> mick crane (12020-12-17):
>> please bear in mind I don't know what I'm doing.
>> It is convenient to have the one display and keyboard/mouse
>> I sometimes if on windows use putty/Xming to start GUI program on other
>> Debian PC.
>> Think I used screen before so can attach/detach from running terminal
>> program but with X display program is it possible to first export to other
>> machine then detach and come back to it later on other machine ?
>> There was VNC, is that the way to do that ?
>
> xpra is probably the program you are looking for.

Does xpra work for reattaching? I've tried it briefly but I don't really
understand how you're supposed to use it. The docs and examples cover
only very basic usage. For me the expected usage would be like this:

1. start program x at machine y from machine z and at some point detach.
2. reattach to program x still running at machine y from machine w. This
should be independent of hardware and software differences between
machines z and w. Some tolerance for different versions of xpra would be
good too.

I've used x2go for years but reattaching works rarely. With VNC it works
always but I wanted something better due to some protocol limitation.

I don't really need the reattaching that much currently which is why
I've stuck with x2go at home for my headless machines.

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#229823

On Fri, Dec 18, 2020 at 03:56:40PM +0200, Anssi Saari wrote:
>Does xpra work for reattaching? 

Yes. The basic operation is "xpra start" to create a virtual X server, 
then you can "xpra attach" and "xpra detach" at will. 

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