On 08/02/2012 11:37 AM, Randall Devol wrote:
> I posted this issue first to
> http://scientificlinuxforum.org/index.php?act=ST&f=16&t=1803
> <http://scientificlinuxforum.org/index.php?act=ST&f=16&t=1803>. On the
> forum, tux99 suggested I report this on the devel mail list.
>
> After upgrading from SL 6.0 to SL 6.2, system startup appears to hang
> when it tries to start run level 5. Parallels is still able to cleanly
> shut down the guest OS and booting into single user works as expected.
>
> After booting into single users, in the /var/log/Xorg.0.log file, I see
> that the Parallels video driver "prlvideo" cannot load because it
> includes an undefined symbol: "miEmptyData". The Parallels mouse driver
> cannot load because of the undefined symbol: "dixScreenOrigins".
>
> Then Xorg aborts because it cannot find any screens.
>
> CentOS release 6.3 with the same version of the kernel
> (2.6.32-279.el6.i686 #1) and the same version of Xorg-server
> (1.10.6.1.el6.centos) as SL 6.2 runs normally under Parallels.
>
> This seems like a bug in SL to me.
>
> -=O=- Randy Devol
> [log in to unmask] <mailto:[log in to unmask]>
> Cell: 408-483-3627
> Fax: 650-390-0818
>
>

There seems to be a lot of comparison between SL 6.2 and CentOS 6.3 
flying around today.  Not very apples to apples so to speak.  I'm also 
guessing that your SL 6.0 to 6.2 was updated via yum and not a fresh 
installation and that the CentOS was.  A week or so ago, there were 
numerous packages for the X drivers that were pushed out to accommodate 
a change in the Xorg API between minor revisions by TUV.  This sounds an 
awful lot like the cause of your trouble.  Was the 'prlvideo' driver 
package updated when you went to 6.2?  You might want to jump back a bit 
in the mailing list archives to find the proper way to make sure yum 
grabs the correct packages.  You could also try SL 6.3rc1 to see if the 
problem persists there.

-Mark

-- 
Mr. Mark V. Stodola
Senior Control Systems Engineer

National Electrostatics Corp.
P.O. Box 620310
Middleton, WI 53562-0310 USA
Phone: (608) 831-7600
Fax: (608) 831-9591