Comment 2 for bug 1446333

I made about 10 attempts to boot and 2 of them get success! I wasn't notice some relation. Maybe it's about keyboard backlight.

Sometimes it was like that, and had not boot.
https://www.dropbox.com/s/6wsqla2t5yo3rjz/bug1446333_ubuntu_mate_00_.JPG?dl=0

Sometimes it was like that, may boot and may not
https://www.dropbox.com/s/fs81bkx6j61rfmj/bug1446333_ubuntu_mate_01_.JPG?dl=0

After this it sometimes was like that:
https://www.dropbox.com/s/xd71mswkf6a5p9s/bug1446333_ubuntu_mate_02_.JPG?dl=0

Some problem can be seen at the bottom of this screenshot:
https://www.dropbox.com/s/x1slttowoxyc4yv/bug1446333_ubuntu_mate_03_.JPG?dl=0
It says rebooting in 30 seconds, but it's actually freeze.

I saved the dmesg log from one of the success boots, it is in the attachment. Also, every live session after success boot have had invisible cursor.