Problem solved with new mesa drivers. thanks.
corrado@corrado-p13-bb-0319:~$ apt policy mesa*driver*
mesa-vdpau-drivers:
Installed: 18.0.0~rc5-1ubuntu1
Candidate: 18.0.0~rc5-1ubuntu1
Version table:
*** 18.0.0~rc5-1ubuntu1 500
500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
100 /var/lib/dpkg/status
mesa-vulkan-drivers:
Installed: (none)
Candidate: 18.0.0~rc5-1ubuntu1
Version table:
18.0.0~rc5-1ubuntu1 500
500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
mesa-va-drivers:
Installed: 18.0.0~rc5-1ubuntu1
Candidate: 18.0.0~rc5-1ubuntu1
Version table:
*** 18.0.0~rc5-1ubuntu1 500
500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
corrado@corrado-p13-bb-0319:~$
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/1753776
Title:
Graphics corruption just before login animation to Xorg sessions
(Intel gen9 GPUs only)
To manage notifications about this bug go to:
https://bugs.launchpad.net/mesa/+bug/1753776/+subscriptions
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