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Old 07-19-2004, 11:48 AM   #1
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Registered: Jul 2004
Distribution: Slackware 10.0
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Question cdrecord/cdrdao + kernel 2.6

Hi, I'm having troubles with cdrecord and cdrdao on
the 2.6.8-rc1-mm1 version of the Linux kernel.

When I try to burn an audio-cd, my machine freezes
when it heads near the end of the burn (usually halfway
through track 11 out of 12 tracks total). It never reaches
the fixation part. It crashes during a simulation as well.

I've been checking my syslogs and memory usage, and it
seems as though cdrecord eats up all of my memory,
causing processes to be killed off. "Out of memory" can
be found in the system logs.

I've spent the whole night searching forums for a solution,
but have found nothing. Just for reference, I have passed
"ide-cd" to the kernel and removed it, I have tried it with
burnfree both on and off, I've played around with (and
disabled) the FIFO buffer, I've added and removed scsi
support (+emulation) in the kernel.

I am/was running cdrecord 2.00.3, I have updated it to a newer
alpha version from a package, as I was unable to compile
it myself against the kernel 2.6 headers (even after applying
the patches that were suggested on other forums). Still
had problems after the upgrade.

One other thing to note is that doing a simulation on an ISO
burn instead of audio didn't eat up all the memory, it stayed
pretty much constant and the simulation passed. So I tried to
use cdrdao to burn the previous audio tracks in one go, and
that ate all of the memory :/

Lastly, I have also tried disabling DMA, but still got freezes.

I'd appreciate any help that anyone could offer. This is a very
frustrating problem


kernel: 2.6.8-rc1-mm1
distro: slackware 10.0
burner: pioneer 106 (DVD+R-R/W and CD-R/W support)
cpu-ram: athlon 2600+, 512MB (swap partition enabled too)

I can't remember the exact command I was using, it was something like:

cdrecord -v dev=ATAPI:0,0,0 -eject -pad -audio *.wav

Old 07-19-2004, 04:32 PM   #2
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Registered: Mar 2004
Distribution: Slackware
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You took your own risks when you decided to install a beta kernel version. Why don't stay with current ?
Old 07-20-2004, 01:39 AM   #3
LQ Newbie
Registered: Jul 2004
Distribution: Slackware 10.0
Posts: 3

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Hi keefaz,

Thanks for your suggestion. It never really occured to me that it might be a bug in the newer kernel releases. I'm just hooked on the improvements made by the latency code in 2.6.x and did not consider trying 2.4.x again.

I reverted to 2.4.26 and all goes well without any freezes, though slightly jumpy.

By chance I happened to stumble across a very recent Linux mailing list post about this problem.
A few people are in the process of writing a fix, though the first patch that was given does not seem to make any difference.

If anyone is interested and wants to follow their progress (without signing up to the mailing list), you can find a mirrored thread at:

I guess I can put up without the latency code of 2.6 until they fix the memory leak, or at least step back into older 2.6.x releases until it works :S

Thanks again!
Old 08-16-2004, 07:45 PM   #4
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Location: Glasgow
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This problem still isn't fixed in 2.6.8. Just so you know.

Old 08-17-2004, 11:38 AM   #5
LQ Newbie
Registered: Oct 2003
Location: Finland, Turku
Distribution: Slackware
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Do I have to downgrade my kernel or will they fix it ,this is very
annoying bug. I don't want to downgrade because 2.6.8 is first
2.6 kernel which don't crash artsd all the time.
Is this bug hardware related or does it happen to everybody which tries to
burn audio CD with 2.6.8?
Sorry for my bad English.
Old 08-19-2004, 11:08 PM   #6
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Registered: Aug 2003
Location: Glasgow
Distribution: Fedora / Solaris
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2.6.7 was fine, but I can only burn as root (despite cdrecord being setuid, and the drives being chmod 666) in 2.6.8.


Old 08-20-2004, 09:27 AM   #7
Registered: Nov 2003
Distribution: Linux and BSD
Posts: 229

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there is a patch for the kernel- and cdrecord issuse you can get here cddvd-cmdfilter-drop.patch


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