screen snapshot utility needed on an r-pi 3b running jessie

[Gene Heskett]

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.

2. Whats the magic recipe to enable AIGLX rendering on the r-pi 3b's?

Thank you all.

Cheers, Gene Heskett

[Andrew M.A. Cater]

Post by Gene Heskett
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.
2. Whats the magic recipe to enable AIGLX rendering on the r-pi 3b's?
Thank you all.
Cheers, Gene Heskett
--
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

Gene,

Please post the output of

cat /etc/os-release

and

cat /etc/debian_version

If you're running Raspbian, this list can't necessarily help you - Respbian is a Debian derivative
and has its own support forums.

There are a couple of HOWTOs on how to bind the PrtSc key to Scrot which is a screenshot utility

Use a search engine for LXDE screenshot scrot and you should find something appropriate.

Hope this helps,

Andy C

[Gene Heskett]

Post by Andrew M.A. Cater

Post by Gene Heskett
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.
2. Whats the magic recipe to enable AIGLX rendering on the r-pi 3b's?
Thank you all.
Cheers, Gene Heskett
--
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

Gene,
Please post the output of
cat /etc/os-release
and
cat /etc/debian_version
If you're running Raspbian, this list can't necessarily help you -
Respbian is a Debian derivative and has its own support forums.

ISTR I do have some raspian stuff on my HD here, but raspian has
self-destructed 3 or 4 times for my purposes as it replaced the special
rt-preempt kernel it takes to run LinuxCNC. It will be controlling a
converted 11x36 Sheldon lathe, but its looking like I am not going to be
able to use cheap, switchmode power supplies for the motors. Too much
radiated noise, screws with the 32megabaud SPI interface. Filters help,
but the noise extends to well above 100MHz, and an 8 inch long
interconnection bus makes a heck of a good antenna. A 7 foot shielded
cable out to the spindle encoder picks up several volts of this crap the
switchers make.

The other problem is forums & all the passwd's to remember, something I
can no longer do, short term memory isn't so good at 82. A mailing list
Just Works(TM) for me.

Post by Andrew M.A. Cater
There are a couple of HOWTOs on how to bind the PrtSc key to Scrot
which is a screenshot utility

I'd be happy if it just installed itself into a menu. I didn't know its
name, but now I know what to send apt off to install. Thank you.

Post by Andrew M.A. Cater
Use a search engine for LXDE screenshot scrot and you should find something appropriate.

I'll do that if apt can't find it in the sources.list repo's.

Post by Andrew M.A. Cater
Hope this helps,
Andy C

It might Andy. It's BC time here, and its either crashed or turned off
when I left last night, my ssh login has died. BC=Before Coffee, but its
brewing.

Thank you again.

Cheers, Gene Heskett

[Alan Corey]

I use xwd, on Debian type stuff you have to add the "retro" X Windows
stuff to get it. Works in the BSDs, most things just fine. I'm
writing this on a Pi 3b, very useful little boxes.

I define this alias in my bashrc or whereever. I just type snap into
some free terminal emulator then I have 10 seconds to get the screen
arranged picture perfect. In some situations it beeps at the end of
the 10 seconds. I never tried assigning it to a key.

alias snap='sleep 10 ; xwd -root -out /tmp/snap.xwd'

Then I do 'gimp /tmp/snap.xwd' because I usually want to crop anyway.

[Gene Heskett]

Post by Alan Corey
I use xwd, on Debian type stuff you have to add the "retro" X Windows
stuff to get it. Works in the BSDs, most things just fine. I'm
writing this on a Pi 3b, very useful little boxes.
I define this alias in my bashrc or whereever. I just type snap into
some free terminal emulator then I have 10 seconds to get the screen
arranged picture perfect. In some situations it beeps at the end of
the 10 seconds. I never tried assigning it to a key.
alias snap='sleep 10 ; xwd -root -out /tmp/snap.xwd'
Then I do 'gimp /tmp/snap.xwd' because I usually want to crop anyway.

Excellent & helpfull stuff, thank you Alan.

Cheers, Gene Heskett

[Gene Heskett]

Post by Gene Heskett
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

Post by Gene Heskett
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.

Post by Gene Heskett
Thank you all.
Cheers, Gene Heskett

[Alan Corey]

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.

Post by Gene Heskett

Post by Gene Heskett
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

Post by Gene Heskett
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.

Post by Gene Heskett
Thank you all.
Cheers, Gene Heskett

--
Cheers, Gene Heskett
--
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

[Gene Heskett]

Post by Alan Corey
#!/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.

Post by Alan Corey
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.

Post by Gene Heskett

Post by Gene Heskett
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

Post by Gene Heskett
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.

Post by Gene Heskett
Thank you all.
Cheers, Gene Heskett

--
Cheers, Gene Heskett
--
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>