my installation is fedora 8

whenever i try to write a DVD i get the following error in K3B

unable to allocate software buffer
This error is caused by the lowmemory locked resource limit
it can be solved by issuing the command 'ulimit -l unlimited'
....or by lowering the used software buffer size in the K3B settings

then after executing the above command the error changes to

:-( attempt to re-run with -dvd-compact -dvd-compact to engage DAO or apply full blanking procedure
Write error

the debug report shows the following

System
-----------------------
K3b Version: 1.0.4

KDE Version: 3.5.8-19.fc8 Fedora
QT Version: 3.3.8
Kernel: 2.6.23.1-42.fc8
Devices
-----------------------
SONY DVD RW DW-G120A MYS2 (/dev/sr0, ) [CD-R, CD-RW, CD-ROM, DVD-ROM, DVD-R, DVD-RW, DVD-R DL, DVD+R, DVD+RW, DVD+R DL] [DVD-ROM, DVD-R Sequential, DVD-R Dual Layer Sequential, DVD-R Dual Layer Jump, DVD-RAM, DVD-RW Restricted Overwrite, DVD-RW Sequential, DVD+RW, DVD+R, DVD+R Dual Layer, CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P, RAW/R96R, Restricted Overwrite, Layer Jump]

Burned media
-----------------------
DVD-RW Sequential

K3bIsoImager
-----------------------
mkisofs print size result: 2491 (5101568 bytes)
Pipe throughput: 5101568 bytes read, 5101568 bytes written.

Used versions
-----------------------
mkisofs: 1.1.6
growisofs: 7.0

growisofs
-----------------------
Executing 'builtin_dd if=/dev/fd/0 of=/dev/sr0 obs=32k seek=0'
/dev/sr0: "Current Write Speed" is 2.0x1352KBps.
:-[ WRITE@LBA=0h failed with SK=5h/ASC=64h/ACQ=00h]: Input/output error
:-( attempt to re-run with -dvd-compat -dvd-compat to engage DAO or apply full blanking procedure
:-( write failed: Input/output error

growisofs command:
-----------------------
/usr/bin/growisofs -Z /dev/sr0=/dev/fd/0 -use-the-force-luke=notray -use-the-force-luke=tty -use-the-force-luke=tracksize:2491 -speed=2 -use-the-force-luke=bufsize:32m

mkisofs
-----------------------
2491
I: -input-charset not specified, using utf-8 (detected in locale settings)
20.11% done, estimate finish Mon Feb 11 17:58:13 2008
40.67% done, estimate finish Mon Feb 11 17:58:06 2008
60.66% done, estimate finish Mon Feb 11 17:58:02 2008
80.57% done, estimate finish Mon Feb 11 17:58:00 2008
Total translation table size: 0
Total rockridge attributes bytes: 786
Total directory bytes: 2400
Path table size(bytes): 22
Max brk space used 0
2491 extents written (4 MB)

mkisofs calculate size command:
-----------------------
/usr/bin/genisoimage -gui -graft-points -print-size -quiet -volid food -volset -appid K3B THE CD KREATOR (C) 1998-2006 SEBASTIAN TRUEG AND THE K3B TEAM -publisher -preparer -sysid LINUX -volset-size 1 -volset-seqno 1 -sort /tmp/kde-root/k3brnBada.tmp -rational-rock -hide-list /tmp/kde-root/k3bCpAPWa.tmp -joliet -joliet-long -hide-joliet-list /tmp/kde-root/k3bYDudVa.tmp -no-cache-inodes -full-iso9660-filenames -iso-level 2 -path-list /tmp/kde-root/k3b06tInb.tmp

mkisofs command:
-----------------------
/usr/bin/genisoimage -gui -graft-points -volid food -volset -appid K3B THE CD KREATOR (C) 1998-2006 SEBASTIAN TRUEG AND THE K3B TEAM -publisher -preparer -sysid LINUX -volset-size 1 -volset-seqno 1 -sort /tmp/kde-root/k3bZUB1ga.tmp -rational-rock -hide-list /tmp/kde-root/k3bFBgpva.tmp -joliet -joliet-long -hide-joliet-list /tmp/kde-root/k3bqteJub.tmp -no-cache-inodes -full-iso9660-filenames -iso-level 2 -path-list /tmp/kde-root/k3blIIxUa.tmp



my fstab file looks like this

/dev/VolGroup00/LogVol00 / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
/dev/VolGroup00/LogVol01 swap swap defaults 0 0

/dev/sda1 /media/C ntfs-3g defaults,umask=0 0 0
/dev/sda5 /media/D ntfs-3g defaults,umask=0 0 0
/dev/sda6 /media/E ntfs-3g defaults,umask=0 0 0
/dev/sda7 /media/F ntfs-3g defaults,umask=0 0 0


please suggest me what i can do !!!!!!

thanks a lot for your help

Can you check the drive in a different computer to see if there is a problem with hardware ?

i use the same hardware to burn dvds in windowsso hardware is working fine

I can think of two possible causes of your problem. Are you writing to a DVD-RW? If so has the DVD-RW been formatted?

Are you attempting to write at a faster speed than the DVD media can write at?

--------------------
Steve Stites

yes im writing a DVD-RW and it has been formatted .... it can be written at a speed of 2x and im trying to write it at 2x only.

i also have a cd rom which does not get detected....any other information that you require please tell me

THANKS A LOT!!!!

Do you have a ulimit restriction on memory size? Also check where k3b creates the dvd image to burn. It might be in /home/<username>/.tmp/ or /tmp. Is there enough free space available?

yes i get a ulimit restriction also .... i tried this by changing the place of temp folder . the ulimit error was gone but other errors were still creeping in

You will need to post what these new problems are. We aren't psychic. What were the limits, and what is the amount of free space in the temporary directory? Also look at the end of your /var/log/messages log file. If you run against any other policy limits, they may be logged there.

Previously the size of temp folder was 1.6 gb but after changing to another drive it is now more than 5 gb.... and in /var/log/messages im not able to open any of the message log files....Also today i tried burning simple data dvd and it burned but the problem continues with DVD-RW...
Im a noob at linux at present ..so instead of being rude please be specific on what information you need(that may include giving the commands required to retrieve the info you need)

THANKS A LOT!!!

You need to be root to read /var/log/messages. For example: "tail -f /var/log/messages" will show the end of the log and follow new log messages. It is useful to run this in a terminal before running something you want information about.

Do you still get the -dvd-compat message after the changes you made? That option is for the "growisofs" program.
If you select "settings -> Configure K3B...", and click on the "programs" icon on the left, you will have a list of programs in the right hand pane. Click on the "User Parameters" tab. Select "growisofs" and click in the Parameters field. There yo u can enter "-dvd-compat".

The IO errors you are having could be from a bad disc, or it may not be properly formatted. Try reformatting it.
The IO errors might instead be due to a bad dvd device as well.

I did the changes in the configure K3B option and now my DVD device is able to burn any media (DVD+RW,CD+RW,DVD,CD).......I had been trying to ask solution to this problem from last one month .....Though this was my second time when i came back to this forum for getting this solved and have been to other forums for this too. I have got the solution to this problem on this forum only . I am really thankful to you jschiwal.....

Can you tell me what was logically wrong behind all this ?


THANKS A LOT!!!!
GOD BLESS