Ok I did what you said and it seems to be an other bug. I opened a new one : https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/940761
Thanks for your time.
Ok I did what you said and it seems to be an other bug. I opened a new one : https:/ /bugs.launchpad .net/ubuntu/ +source/ xorg/+bug/ 940761
Thanks for your time.