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[ferret_users] animation on the fly with linux
Hi,
this question reopens an old thread. With the latest releases of Suse
-linux (11.4) it
is impossible to get the animation on the fly working. If BackingStore
is disabled, ferret issues
an error message as it should be the case. However, putting a line
Option "BackingStore" "True"
into the configuration file, that has the Device configuration,
50-screen.conf, (with Suse 11 X11-configuration is
completely changed) the error message disappears, but an animation
starts with a correct screen followed by a sequence
of white screens.
xdpyinfo gives
options: backing-store YES, save-unders NO
There is not way to switch save-under to Yes. (Kevins advise) This
option is completely undocumented with new linux distributions.
The man page of Xserver offer -su to switch off save under. Nothing is
said, how to switch it on. At some
linux websites it is described as old. As a guess
Option "SaveUnders" "True"
does not help.
Running ferret locally on this machine gives the reported errors - one
correct screen and a sequence of white screen.
Logging at this machine from another one that has a Xserver running with
backinstore, xdpyinfo gives now
(at the same machine like before)
options: backing-store YES, save-unders YES
(The local machine uses AIX 5.3, option -bs in xserverrc)
Hence, the remote (Linux) Xserver gets its information correctly
from the local (AIX) one and ferret works as it should do. So it seems
not to be a ferret or simple Xserver problem.
I know, there are workarounds with whirlgif or imagemagic .....
Asking Google brings up a lot of half information. Most people give
advise like "switch on backingstore" and are
of little help. Also grads and idl seem to have a similar problem. In
another context Nvidia-driver installation
is reported as an error source.
So my question: does anyone have a running system on a local machine:
- new linux
- recent ferret
- animation on the fly works
It would be great to learn, what to do to get animation running.
Many thanks,
Martin
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