I've a workaround disabling KMS and creating a xorg.conf with vesa driver. If anyone is interested you can have look here [1].
[1] https://wiki.ubuntu.com/X/KernelModeSetting
I've a workaround disabling KMS and creating a xorg.conf with vesa driver. If anyone is interested you can have look here [1].
[1] https:/ /wiki.ubuntu. com/X/KernelMod eSetting