>Number:         25765
>Category:       kern
>Synopsis:       kernel option WSDISPLAY_SCROLLSUPPORT scrambles X display
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 31 18:35:00 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     Joachim Koenig-Baltes
>Release:        NetBSD 2.0F
>Organization:
	
>Environment:
System: NetBSD Vigor10 2.0F NetBSD 2.0F (JOACHIM_ISDN) #1: Mon May 31 21:56:56 CEST 2004 joachim@duronn:/usr/src/sys/arch/i386/compile/JOACHIM_ISDN i386
Architecture: i386
Machine: i386
>Description:
Enabling "options WSDISPLAY_SCROLLSUPPORT" in my kernel config scrambles
the X display on my Compaq Armada M700 LCD Display. This kernel was build
from sources updated today.

The display has some random lines at the bottom and some top lines are
missing, and the picture is shifted about 70% to the right with the lines
wrapped around.

Disabling the option leads to a correct X display.

I only updated the kernel and not userland or X sources. 

>How-To-Repeat:
Build new kernel with options WSDISPLAY_SCROLLSUPPORT, install it and reboot,
start X.
>Fix:
no idea.
>Release-Note:
>Audit-Trail:
>Unformatted: