crash on startup

[umberto]

When system start, on splash screen the system crash: splash screen disappears and, on black screen, appears "Check.. (unfortunatly i don't remember what)" and all is freezed. Sending ctrl+alt+canc, the system restart and startup work fine.
This kind of crash frequently happens.

ProblemType: Bug
DistroRelease: elementary OS 0.2
Package: elementary-desktop 1.295-0~369~precise1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.2.0-38.61-generic-pae 3.2.37
Uname: Linux 3.2.0-38-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.1+elementary3~precise1
Architecture: i386
CrashDB: elementary_meta
Date: Sun Feb 24 15:25:46 2013
InstallationMedia: elementary OS 0.2 "Luna" - Beta 1 i386 (20121114)
MarkForUpload: True
ProcEnviron:
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)

[umberto (umberto-fuffolo)]

The same crash it is again occured, and this time it's occurred twice and in succession. This time i took notes.

First crash:
could not write bytes: Broken pipe
  *Stopping save kernel messages
  *Starting CUPS printing spooler/server
  *Checking battery state..
*Stopping System V runlevel compatibility
*Starting Mount Network filesystems
*Stopping Mount Network filesystems

After sending ctrl+alt+canc in next start i had the same error, but:

could not write bytes: Broken pipe
  *Stopping save kernel messages
  *Starting CUPS printing spooler/server
  *Starting anac(h)ronistic cron
  *Stopping anac(h)ronistic cron
  *Checking battery state..

[Cody Garver (codygarver)]

This is the notorious nvidia bug, we're working on it. If you have an optimus, try bumblebee.

[Sidhant (sidhantpanda)]

I have a radeon and it is still affecting my boot. I'm not able to go past this.