Re: [ferret_users] animation on the fly with linux

[Ryo Furue <furue@xxxxxxxxxx>]

Hi Martin,

| [. . .] 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, 
| [. . .] 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

I've had exactly the same problem (on the testing distribution of
Debian GUN/Linux with the nvida driver).

I've just done a little research and learned that the save-unders
support has been removed from Xorg for some time:

  http://70.87.46.147/vbulletin/showthread.php?p=2298639

That's why you can't enable it.

They say that backing-store is obsolete and that people should use
"compositing manager" (whatever it is) and they seem to have no
interest in supporting the backing-store business.

That suggests we cannot use "repeat/animate" on a new-ish
Linux operating system.

Regards,
Ryo