Re: screen snapshot utility needed on an r-pi 3b running jessie
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.
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>
>
>
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