Frankly, my advice would be to back up your data (use a Live CD if need be) and do a clean install of a 32 bit ubuntu 9.10 (or whatever you like).  The restore your data.  I would be surprised if there is any clean dependable method to regress since you have little/no way to know what other 64 bit globs were installed previously that would not work with a 32 bit kernel.<br>
<br>OTOH, I have been running a 64 bit ubuntu 9.10 on my Core 2 duo machine with an nvidia 9800 GTX (or GTS, I forget) for months with no problems<br><br><div class="gmail_quote">On Sat, Feb 27, 2010 at 3:44 PM, Mike Bushroe <span dir="ltr">&lt;<a href="mailto:mbushroe@gmail.com">mbushroe@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I was having trouble with my system failing to read disk formats, USB flashdrives, and finally CDROMs, so I built a fresh Kernel from scratch, getting the source from Kernel.Org and running menuconfig. But afterwards, my Nvidia GeForce 9400 GT video drivers would not work. When I posted on Nvidia, they said that there is no support for creating a Kernel Video Driver Module on a 64bit kernel (AMD Athelon 64) running a 32bit user space. Now I am stuck with not knowing how to replace the 64 bit kernel with a new 32 bit Kernel. When I try booting into any of the older Kernels, it eventually fails, fails to establish X windows, or runs into a Kernel Panic, so going backwards does not seem to be an option. But when I reload a new Kernel and compile it, it just comes out 64 bit again. And I can not find anyway using the Ubuntu get software or Update procedure to get a standard Kernel. They only seem to offer something strange called Batman or dbd8d or a RAID kernel.<br>


<br><br>   There must be some fairly straight forward to get Kernel and user space back in sync, I just don&#39;t seem to be able to figure it out. Any suggestions?<br><font color="#888888"><br>Mike<br>
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