<br><br><div class="gmail_quote">On Fri, Jan 6, 2012 at 8:40 PM, jk90090 <span dir="ltr"><<a href="mailto:jk90090@gmail.com">jk90090@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="HOEnZb"><div class="h5">On 1/6/12 5:11 PM, R KANNAN wrote:<br>
> Hello,<br>
><br>
> I had a working version of Mythbuntu 11.04 on my laptop and I gave in<br>
> to frequent suggestions from it to upgrade to Ubuntu 11.00 this<br>
> afternoon. Friday afternoon is not a good time to update. After<br>
> installing the updates, it restarted and I found that the X server is<br>
> broke.<br>
><br>
> I can login to the consoles Alt-F1...Alt-F5 fine but the X server<br>
> shows a blank seen. The Myth backend seems to be running fine and so<br>
> is Mythweb web server (Apache). The file system seems OK but the<br>
> X-display flashes for a few times and there is a blank screen. I have<br>
> tried..<br>
><br>
> init 3<br>
> init 5<br>
><br>
> to restart the X server with the same result.<br>
><br>
> I see an error message flash by just after grub but I cannot make out<br>
> anything. It switches then to purple splash screen before the flashing<br>
> followed by<br>
><br>
> I thought the update should not change the configuration files and so<br>
> should work as before.<br>
><br>
> Any ideas?<br>
</div></div>Start with looking in your /var/log/Xorg.0.log for errors.<br>
Next, I found Ubuntu troublesome when trying to install video drivers,<br>
so there could be a kernel driver mismatch or something. apt-get update<br>
&& apt-get upgrade to make sure everything is updated and installed.<br>
For instance today I loaded Mythbuntu, which defaulted to Nvidia 175.x<br>
driver. I enabled the repo for 285.x (or whatever # it is) and<br>
installed it, but 175 just stayed as the working driver. I'm no Ubuntu<br>
expert, so there was probably a trick to getting it working, but in the<br>
end I just removed the 175 driver which made the nvidia-current (285)<br>
become the working driver.<br>
<br>
-JK<br>
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</blockquote></div><br>By any chance did you have auto-login enabled? If so, try deleting/renaming your /etc/gdm/custom.conf. This fixed the issue for me (at the cost of no longer logging in automatically).<br><br>-Alex<br>