Re: screen snapshot utility needed on an r-pi 3b running jessie
On Friday 13 April 2018 08:07:09 Alan Corey wrote:
> I usually have xwd (from x11-apps) installed and recently cooked up
> this script:
>
> #!/bin/bash
> datestr=`date +"%Y-%m-%d_%H-%M"`
> outname=/tmp/ss_$datestr.xwd
> echo "Saved as " $outname
> xwd -display ':0.0' -root -out $outname
>
> It can do a screen dump even over an ssh connection. They're saved as
> .xwd files of course but convert in ImageMagick can convert them to
> .png, .jpg, whatever. You could make the convert step part of the
> script, but you might prefer to do that later if speed of capturing
> is important.
>
The snapshots I have made of the r-pi screens I have done by ssh logins,
running the app I want a snapshot of, and ksnapshot that.
> I'm building an RPI tablet with the official touchscreen and needed a
> way to do remote screen captures. Date and time is part of the output
> filename.
>
> On 4/12/18, Gene Heskett <gheskett@shentel.net> wrote:
> > On Monday 02 January 2017 02:13:17 Gene Heskett wrote:
> >> Greetings folks, new to the list, with 2 problems.
> >>
> >> 1. Need a snapshot utility like this x86 wheezy install has. What
> >> it its name if it exists. Using LXDE if that's important.
> >
> > The name will likely contain snapshot, I think mine is ksnapshot?
> > No, its not on the jessie install, locate is only finding
> > systemd.snapshot, which isn't a screen snapshotter, its a systemd
> > snapshotter
> >
> >> 2. Whats the magic recipe to enable AIGLX rendering on the r-pi
> >> 3b's?
> >
> > No such critter exists AFAIK. I'm getting an update rate in the 7
> > frames a second rate using the framebuffer on that jessie based
> > install, with hdmi drive output at 1920x1024. So the backplot is
> > often just noticeably behind the machine. You tend to get used to
> > it. But don't forget its not running a debian kernel, and what its
> > running is pinned.
> >
> > Its running kernel 4.4.4-rt9-v7+ #7 SMP PREEMPT RT, custom built for
> > close to realtime on armhf hardware. Works ok where there is
> > hardware step generation, and a mesa 7i90HD can supply 8 axis's
> > worth of step generators. That depends on the firmware installed on
> > the 7i90HD and the user can update it. It talks to this card using
> > SPI, writing at 41 megabaud, and reading back the status at 25
> > megabaud. 32 bit packets per transmission either direction. Needless
> > to say, that SPI cable is very short, nominally 1 inch.
> >
> >> Thank you all.
> >>
> >> Cheers, Gene Heskett
> >
> > --
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> > soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > Genes Web page <http://geneslinuxbox.net:6309/gene>
--
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
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