Hi. I have recently upgraded to kernel 2.6.8.1. Everything has worked so far except that I am no longer able to make CDs. Here is the output of eroaster when I erase a CD when I was still
using kernel 2.6.8-rc3-mm1 (and probably even earlier with kernel 2.6.7)

cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).
cdrecord: WARNING: This causes a high risk for buffer underruns.
cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
cdrecord: Permission denied. WARNING: Cannot set priority using setpriority().
cdrecord: WARNING: This causes a high risk for buffer underruns.
scsidev: 'ATAPI:0,0,0'
devname: 'ATAPI'
scsibus: 0 target: 0 lun: 0
Warning: Using ATA Packet interface.
Warning: The related Linux kernel interface code seems to be unmaintained.
Warning: There is absolutely NO DMA, operations thus are slow.
SCSI buffer size: 64512
Cdrecord-Clone 2.01a34 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
NOTE: this version of cdrecord is an inofficial (modified) release of cdrecord
and thus may have bugs that are not present in the original version.
Please send bug reports and support requests to <cdrtools@packages.debian.org>.
The original author should not be bothered with problems of this version.
TOC Type: 1 = CD-ROM
Using libscg version 'schily-0.8'.
atapi: 1
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'SONY '
Identifikation : 'DVD RW DW-U12A '
Revision : '2.0d'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Current: 0x000A
Profile: 0x001B
Profile: 0x001A
Profile: 0x0014
Profile: 0x0013
Profile: 0x0011
Profile: 0x0010
Profile: 0x000A (current)
Profile: 0x0009
Profile: 0x0008
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96R RAW/R96R
Drive buf size : 8112896 = 7922 KB
Drive DMA Speed: 22093 kB/s 125x CD 15x DVD
Current Secsize: 2048
ATIP info from disk:
Indicated writing power: 5
Reference speed: 2
Is not unrestricted
Is erasable
ATIP start of lead in: -11745 (97:25/30)
ATIP start of lead out: 359849 (79:59/74)
1T speed low: 0 (reserved val 0) 1T speed high: 4
2T speed low: 8 2T speed high: 0 (reserved val 10)
power mult factor: 4 6
recommended erase/write power: 5
A1 values: 02 4C D0
A2 values: 4A D8 5A
Disk type: Phase change
Manuf. index: 40
Manufacturer: INFODISC Technology Co., Ltd.
Starting to write CD/DVD at speed 4 in real BLANK mode for single session.
Performing OPC...
Blanking PMA, TOC, pregap
Blanking time: 53.858s

---------------------------------------------------------

Here's the output now, which says something that the operation is not permitted:

cdrecord: Operation not permitted. WARNING: Cannot do mlockall(2).
cdrecord: WARNING: This causes a high risk for buffer underruns.
cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
cdrecord: Permission denied. WARNING: Cannot set priority using setpriority().
cdrecord: WARNING: This causes a high risk for buffer underruns.
scsidev: 'ATAPI:0,0,0'
devname: 'ATAPI'
scsibus: 0 target: 0 lun: 0
Warning: Using ATA Packet interface.
Warning: The related Linux kernel interface code seems to be unmaintained.
Warning: There is absolutely NO DMA, operations thus are slow.
SCSI buffer size: 64512
Cdrecord-Clone 2.01a34 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
NOTE: this version of cdrecord is an inofficial (modified) release of cdrecord
and thus may have bugs that are not present in the original version.
Please send bug reports and support requests to <cdrtools@packages.debian.org>.
The original author should not be bothered with problems of this version.
TOC Type: 1 = CD-ROM
Using libscg version 'schily-0.8'.
atapi: 1
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'SONY '
Identifikation : 'DVD RW DW-U12A '
Revision : '2.0d'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE
Supported modes:
Drive buf size : 8126464 = 7936 KB
Drive DMA Speed: 21942 kB/s 124x CD 15x DVD
cdrecord: Operation not permitted. prevent/allow medium removal: scsi sendcmd: no error
CDB: 1E 00 00 00 01 00
status: 0x0 (GOOD STATUS)
cmd finished after 0.000s timeout 40s
cdrecord: Cannot init drive.
Current Secsize: 2048
ATIP info from disk:
Indicated writing power: 5
Reference speed: 2
Is not unrestricted
Is erasable
ATIP start of lead in: -11745 (97:25/30)
ATIP start of lead out: 359849 (79:59/74)
1T speed low: 0 (reserved val 0) 1T speed high: 4
2T speed low: 8 2T speed high: 0 (reserved val 10)
power mult factor: 4 6
recommended erase/write power: 5
A1 values: 02 4C D0
A2 values: 4A D8 5A
Disk type: Phase change
Manuf. index: 40
Manufacturer: INFODISC Technology Co., Ltd.

-------------------------------------------------------------------------

I'm pretty sure I've kept the same kernel configuration in both cases.
I have the following turned on in the ATAPI and SCSI sections:

enhanced IDE/MFM/RLL support
IDE/ATA-2 support
use multi-mode as default
IDE/ATAPI CDROM support
IDE/ATAPI FLOPPY support
generic/default IDE support
PCI IDE support
sharing PCI IDE interrupts
generic PCI IDE
(the rest are more or less machine specific)
(nothing is turned on in the SCSI section)


I don't think this will help much, but here's the output of lspci:

0000:00:00.0 Host bridge: Intel Corp. 82865G/PE/P DRAM Controller/Host-Hub Interface (rev 02)
0000:00:01.0 PCI bridge: Intel Corp. 82865G/PE/P PCI to AGP Controller (rev 02)
0000:00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #1 (rev 02)
0000:00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #2 (rev 02)
0000:00:1d.2 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #3 (rev 02)
0000:00:1d.3 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #4 (rev 02)
0000:00:1d.7 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev c2)
0000:00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Bridge (rev 02)
0000:00:1f.1 IDE interface: Intel Corp. 82801EB/ER (ICH5/ICH5R) Ultra ATA 100 Storage Controller (rev 02)
0000:00:1f.3 SMBus: Intel Corp. 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
0000:00:1f.6 Modem: Intel Corp. 82801EB/ER (ICH5/ICH5R) AC'97 Modem Controller (rev 02)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200] (rev 01)
0000:02:08.0 Ethernet controller: Intel Corp. 82562EZ 10/100 Ethernet Controller (rev 02)
0000:02:0e.0 FireWire (IEEE 1394): NEC Corporation uPD72874 IEEE1394 OHCI 1.1 3-port PHY-Link Ctrlr (rev 01)




Any ideas on what the problem is? I tried checking the change log for the kernel and
couldn't find anything that might have changed since when it was working.

Thanks for any help,
Yale

There's a problem with the kernel where you can't burn cds if you're not root. (at least according to the k3b website which was not fixed in 2.6.8.1, so maybe you can use your old 2.6.7 kernel for now)

Yes, it finally works. I never thought about using cdrecord as root since I always tried avoiding to login as root. I guess I'll have to live with it for now.
Thanks for the info.
Yale

hi,

Some distro's (e.g. SuSE) tampered with the code of cdrecord to make it suitable for DVD. As I see your output it seems this is also the case with your version :

Cdrecord-Clone 2.01a34 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
NOTE: this version of cdrecord is an inofficial (modified) release of cdrecord
and thus may have bugs that are not present in the original version.
Please send bug reports and support requests to <cdrtools@packages.debian.org>.
The original author should not be bothered with problems of this version.

I suggest you download the source-code (e.g. from ftp://ftp.berlios.de/pub) and recompile it.
You can also use cdrdao but it's more complicated to use. You can also replace mkisofs : the source-code is in the same package.

Greetings,

Ronald