Jasper just ran the 8u33 + javafx 8u60-ea earlier this week with no
problems -- Ensemble8 demo just came up and ran fine. He did mention
that he runs as root, so didn't run into the problem you are seeing with
accessing /dev. You might try running as root or else changing the
permissions.
-- Kevin
Fabrizio Giudici wrote:
Hello.
I got my PI 2 since a few days and I'd like to develop in JavaFX on
it. I've read the January announcement from Oracle about the end of
support for JavaFX... sigh. In these days I'm just checking whether
the development with JavaFX on the PI 2 is feasable or a pain in the
ass. On this purpose, I've prepared a small application with just a
couple of screens and testing deployment.
First, I'd like to thank a lot those who are working for the OpenJFX
port as a patch for the missing Oracle part. Following the simple
instructions to "patch" the Oracle JDK 1.8.0_33 I've been able to
build a somewhat working system.
Now, the problems. I'm testing with two JDKs:
* the one pre-installed in Raspbian: java.version: 1.8.0 +
javafx.runtime.version: 8.0.0-b132
* the "patched" one: java.version: 1.8.0_33 + javafx.runtime.version:
8.0.60-ea (Wed Mar 25 00:04:40 UTC 2015)
First problem. It occurs with both JDKs. My application starts at
fullscreen, but it isn't really covering the whole screen. It is
actually smaller. There's a strip at the right and the bottom side
where I can see a few columns/rows of characters from the underlying
console. Is there any bug in this area? Workarounds?
Second problem. It only happens with the "patched" JDK. When I run my
app from the command line I see:
Udev: Failed to write to /sys/class/input/mice/uevent
Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/event0/uevent
Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/event1/uevent
Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/input0/uevent
Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/input1/uevent
Check that you have permission to access input devices
I'm aware that Raspbian requires certain groups for accessing some
features. I'm running as the 'fritz' user in the following groups:
fritz adm dialout cdrom sudo audio video plugdev games users
netdev input pi spi gpio
So it seems that there should be any problem. Actually, the problem
doesn't occur with the pre-installed JDK. Of course, what's happen is
that I can't control my app with neither the keyboard nor the mouse.
Third problem, still with the "patched JDK". Perhaps it's just a
consequence of the second. I tried to run as sudo: while I don't see
the error messages, still I can't control the application. Actually I
don't even see the mouse pointer. Perhaps is it just this bug:
http://stackoverflow.com/questions/26296805/ ?
I've seen it with JDK 1.8.0 build 25.0-b70 on my Mac OS X, and
disappeared after I've upgraded to 1.8.0_40.
Actually at present time I can test some more with the pre-installed
JDK, but obviously I'd like to move to the latest available one as
soon as possible.
Please also let me know how I can help in the investigations.
Thanks.
