i386/88965: vidcontrol hangs with 2 modules of RAM

[Javier Matos]

>Number:         88965
>Category:       i386
>Synopsis:       vidcontrol hangs with 2 modules of RAM
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 14 01:00:24 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Javier Matos
>Release:        FreeBSD 6.0-CURRENT
>Organization:
>Environment:
>Description:
              I have problems with my computer.
I configure my own kernel with options VESA and SC_PIXEL_MODE and I can change the resolution of my screen when I place only one module or RAM on the motherboard because when I put the second and try to change resolution using "vidcontrol MODE_XXX" my computer hangs and sometimes when it happens the internal speaker make a continuous noise.
The problem disappear when I tipe vidcontrol in the machine when it have only one RAM module.

The problem is not the memory because I have enought modules to change it and test with the same result, the motherboard (P4C800 E-Deluxe) I know that it can´t be because that computer was working with Windows using features provided by Dual-Channel DDR and it works...

I will change the motherboard to test it but it´s impossible to think that it is the problem.

Sorry, my english is horrible... I hope that can understand my explanation
>How-To-Repeat:
              In my situation... to repeat the problem I only must to configure kernel, compile it and run the machine with 2 modules or RAM... when I use only 1 module I have not problems
>Fix:
              The solution is to only use 1 module of RAM... because when you put 2 modules linked in the pair to use Dual-Channel or not linked (using Single-Channel because the 2 modules are in different place) the computer hangs
>Release-Note:
>Audit-Trail:
>Unformatted: