CentOS 6.4 VirtualBox VM won’t boot up after doing an update/upgrade!!!

Often times, I employ a CentOS VirtualBox virtual machine (VM) as a development, testing and staging environment, I love the flexibility of virtual environments for testing and development work before moving my work to production environments.

Recently I ran a yum update and yum upgrade on a CentOS 6.4 VM and subsequently rebooted it, only to be greeted by a blank screen following bootup. A quick search of virtual TTY terminals yielded a login prompt.

Search of the usual logs (/var/log/messages and /var/log/dmesg) did not yield anything useful, however, the /var/log/Xorg.0.log displayed some interesting messages. Of particular interest were;

“… (EE) Failed to load module “vboxvideo” (module requirement mismatch, 0)” … (EE) No drivers available.” Fatal server error:” … no screens found”

A bit of Google revealed “http://www.centos.org/modules/newbb/print.php?form=1&topic_id=41799&forum=55&order=ASC&start=0” So I followed suit and backed up the /etc/X11/xorg.conf file and rebooted :) All is well…

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