kern/50452: LCD monitor sync out of range with Intel 965 chipset

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         50452
>Category:       kern
>Synopsis:       LCD monitor sync out of range with Intel 965 chipset
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 20 10:45:00 +0000 2015
>Originator:     Andreas Gustafsson
>Release:        NetBSD 7.0 + patch to fix PR 50060
>Organization:

>Environment:
System: NetBSD
Architecture: x86_64
Machine: amd64
>Description:

I originally reported this in a follow-up to PR 50060, but since
it appears to be a separate issue, I'm filing a separate PR.

After applying the patch in PR 50050, my ASUS P5B-V motherboard boots,
but there is still a problem with the video mode.  I have an LCD
display connected to the VGA port, and it is showing the following
message:

                          ATTENTION
                         OUT OF RANGE
                   H: 71.9 KHz    V: 160 Hz
                 PLEASE CHANGE SIGNAL TIMING


The display is an iiyama ProLite E380S, Model No. PLE380S-S0X.

This is not a high priority issue for me because I'm using the machine
with a serial console, but it might be for someone else.

>How-To-Repeat:

>Fix: