Dear Maintainer,

I get a window freeze with a message in X log's file :
AIGLX: Suspending AIGLX clients for VT switch

I get that message when I have two SSH sessions (ssh -X)  open on two different machines
and when I use X software, mostly vim-gtk. at some time moving through window the X
session is locked and I can only restart X connecting through ssh from another machine.
I was connected to 2 different VM, one on the current machine (KVM), the other on
another hardware (XEN).
I get the same problem working with the 2 same VM from the XEN machine.

The Xorg.conf is new since the first time I get some problems (result of "X -configurei"

The two different machines :
1) i3-3220 CPU @ 3.30GHz
   No specific videocard, using video from CPU using "intel" driver
   8G Ram
   upgraded from Wheezy to jessie last week

2) AMD Phenom(tm) II X4 905e Processor
   video card : NVIDIA Corporation G94 [GeForce 9600 GT] (rev a1)
   using "nouveau" driver
   16 G Ram
   using jessie since more than 1 year.

The machine are kept "uptodate" at least once a week, I never get that problem
before.
I try with different kernels (3.16 standard from Debian, 3.19.5 and even 4.0.0)
getting always the lock after some (??) time.


Regards

JP P