What I need is a software which detects errors even while booting. My fresh upgrade to Ubuntu 14.04 takes up to 40 secs to get the login screen. I had the same problem with Ubuntu 13.10. I have a Lenovo pc with an i5 processor at 2.5 and a 4GB ram. I tried
sudo grep errors /var/log/boot.log
but I did not understand the problem. Is there any software that can help me detect the errors..? I have also tried fsck but my disk is mounted and the process could not start. I have also asked in askubuntu but still no luck..
sudo grep errors /var/log/dmesg
I also attach you my bootchart.png which I have no idea of how to read..