CentOS 6 hangs while trying to start X

[Antoant]

Hello,

I have a fully update CentOS 6 VM running on ESXi on a HP DL385 host.
The machine was fine until I restarted the host a couple of days ago and noticed that I was not getting the GUI login screen (It hangs at the bar screen or when doing an interactive boot after you go past the rc.local load step), nor was I able to Remote Desktop to it. I can however switch to another console and login via the text interface and I can also ssh in.

My Xorg.0.log file has the following errors in it

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[   367.631] (EE) open /dev/dri/card0: No such file or directory
[   367.694] (EE) open /dev/fb0: No such device
[   368.783] (EE) AIGLX: reverting to software rendering
[   422.993] (EE) Server terminated successfully (0). Closing log file.

which are common except the last one.

Also in the messages log file I get the following

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prefdm main process ended, respawning
prefdm respawning too fast, stopped

which, from what I read, is associated with graphics drivers and/or X configuration files. However, I did not upgrade before the problem appeared nor did I make any changes to the X configuration.

So can someone point me in the right direction to figure out what went wrong?

[TrevorH]

This is inside a virtual machine? If so then did you have the VMWare guest additions or whatever they are called installed? With the upgrade you will have a new kernel and they will need reinstalling (if they were installed before).

[Antoant]

Yes this is inside the virtual machine.
VMWare Tools were reinstalled after the last update.