i386/143733: Can't mount successfully burnt DVD+RW by VIA KT880

[Domagoj]

>Number:         143733
>Category:       i386
>Synopsis:       Can't mount successfully burnt DVD+RW by VIA KT880
>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:   Wed Feb 10 19:50:01 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Domagoj
>Release:        8.0-RELEASE-p2
>Organization:
>Environment:
# uname -a
FreeBSD blackhole.starforce.biz 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #0: Mon Feb  8 01:10:33 CET 2010     root at blackhole.starforce.biz:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
After this:
http://www.starforce.biz/dvd_burning.txt
Few seconds later, I tried to mount again and it DID worked.

Media is DVD+RW. Sometimes I can mount it and sometimes I can't. In which case:
# dvd+rw-mediainfo /dev/cd0
INQUIRY:                [LITE-ON ][DVDRW SOHW-1653S][CS0T]
GET [CURRENT] CONFIGURATION:
 Mounted Media:         1Ah, DVD+RW
 Media ID:              RICOHJPN/W11
 Current Write Speed:   4.0x1385=5540KB/s
 Write Speed #0:        4.0x1385=5540KB/s
GET [CURRENT] PERFORMANCE:
 Write Performance:     4.0x1385=5540KB/s@[0 -> 0]
 Speed Descriptor#0:    00/0 R at 3.2x1385=4432KB/s W at 4.0x1385=5540KB/s
READ DVD STRUCTURE[#0h]:
 Media Book Type:       00h, DVD-ROM book [revision 0]
 Legacy lead-out at:    2295104*2KB=4700372992
READ DISC INFORMATION:
 Disc status:           blank
 Number of Sessions:    1
 State of Last Session: empty
 "Next" Track:          1
 Number of Tracks:      1
READ FORMAT CAPACITIES:
 unformatted:           2295104*2048=4700372992
 26h(0):                2295104*2048=4700372992
READ TRACK INFORMATION[#1]:
 Track State:           blank
 Track Start Address:   0*2KB
 Free Blocks:           2295104*2KB
 Track Size:            2295104*2KB
READ CAPACITY:          0*2048=0

media appears blank.
In all other systems, no matter which OS is in question, media is perfectly readable.

More experienced user, indicated that it is an "ASRock K7 upgrade 880"'s chipset problem
>How-To-Repeat:

>Fix:


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