ia64/153495: xf86-video-ati wavy line problem for lenovo g555

[Brendhan Horne]

>Number:         153495
>Category:       ia64
>Synopsis:       xf86-video-ati wavy line problem for lenovo g555
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ia64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Dec 28 16:30:10 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Brendhan Horne
>Release:        8.0
>Organization:
>Environment:
FreeBSD Beast.brendhanhorne.com 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:02:08 UTC 2009     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

>Description:
Laptop:

Lenovo G555

Video Card:        

        Driver      "radeon"
        VendorName  "ATI Technologies Inc"
        BoardName   "M880G [Mobility Radeon HD 4200]"
        BusID       "PCI:1:5:0"

After performing an upgrade to Xorg 7.5 the desktop became unusable due to the appearance of wavy lines in the desktop.

 
After several tries at downgrading Xorg metaport. I was able to isolate it to the xf86-video-ati port. After performing a downgrade in the port the video returned to a usable level.  Currently using 
xf86-video-ati-6.12.4_1 X.Org ati display driver




>How-To-Repeat:
Upgrade xf86-video-ati to current release. 
>Fix:
Downgrading the port is a temporary workaround and not a solution. Currently I do not know of a solution. 

>Release-Note:
>Audit-Trail:
>Unformatted: