Comment 8 for bug 546192

> 1st I remove the nvidia drivers (I think the nouveau one is use now) so:
> - Usplash plymouth (ubuntu logo) appears at the correct resolution for about
> 1s just before gdm and after the black screen

The delay in showing the splash screen is bug #540801.

> during the boot process and while the screen is black I can see a hight disk
> activity that make me things that check disk is under precess.

This is ureadahead, not a disk check. This is the expected behavior.

> Once logged I've got the cpu frequency set to Performance instead of Ondemand

The frequency governor is set by a script with a delay after startup, to prevent slowing down the initial boot.

> When closing session I've got this message:
> - avahi-deamon main process terminated with status 255
> and
> - usplash terminated with status 2

Some messages may be shown on shutdown before the splash screen reappears due to bug #540816.

> 2nd I reinstall nvidia drivers
> - Rebooting and after grub, I still get the black screen then Usplash runs in very low quality and display a message:
> Your disk drive need to be checked for errors

The low resolution of the splash screen is currently unavoidable with when using the nvidia binary driver.

Reclosing this report, then, as there don't appear to be any new bugs here.