CD/DVD creater too slow

[Pablo Almeida]

Hello. Whenever I try to burn a DVD disc using the "CD/DVD Creator folder" on Ubuntu 9.04, it goes super slow. If I burn a full 4.5 GB DVD, it takes me around 40 min (if I'm lucky).

Expected: disc to burn at 8X
What happens instead: disc burns at 0.3X

[Alexander Samoilov (alexander-samoilov)]

Hi.

I have the same problem on Kubuntu 9.10.
DVD burning is extremely slow.

Details:

dvd:

sudo hdparm -tT /dev/sr0

/dev/sr0:
 Timing cached reads: 512 MB in 2.00 seconds = 255.91 MB/sec
 Timing buffered disk reads: 4 MB in 3.22 seconds = 1.24 MB/sec

At least harddisk is ok :-)

sudo hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads: 4096 MB in 2.00 seconds = 2047.85 MB/sec
 Timing buffered disk reads: 270 MB in 3.02 seconds = 89.48 MB/sec

dmesg | grep ata
[ 0.000000] BIOS-e820: 00000000cfeb0000 - 00000000cfebe000 (ACPI data)
[ 0.000000] modified: 00000000cfeb0000 - 00000000cfebe000 (ACPI data)
[ 0.000000] #0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000]
[ 0.000000] PERCPU: Embedded 30 pages at ffff880028022000, static data 90720 bytes
[ 0.000000] Memory: 3917816k/4980736k available (5043k kernel code, 788228k absent, 274692k reserved, 2810k data, 652k init)
[ 1.457405] Write protecting the kernel read-only data: 7180k
[ 1.559651] libata version 3.00 loaded.
[ 1.572183] pata_atiixp 0000:00:14.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 1.572212] pata_atiixp 0000:00:14.1: setting latency timer to 64
[ 1.577228] scsi0 : pata_atiixp
[ 1.577334] scsi1 : pata_atiixp
[ 1.578378] ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0xff00 irq 14
[ 1.578380] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xff08 irq 15
[ 1.582917] ata3: SATA max UDMA/133 abar m1024@0xf9fffc00 port 0xf9fffd00 irq 29
[ 1.582920] ata4: SATA max UDMA/133 abar m1024@0xf9fffc00 port 0xf9fffd80 irq 29
[ 1.582923] ata5: SATA max UDMA/133 abar m1024@0xf9fffc00 port 0xf9fffe00 irq 29
[ 1.582926] ata6: SATA max UDMA/133 abar m1024@0xf9fffc00 port 0xf9fffe80 irq 29
[ 1.921827] ata6: SATA link down (SStatus 0 SControl 300)
[ 1.933806] ata5: SATA link down (SStatus 0 SControl 300)
[ 2.110057] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 2.110082] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 2.114207] ata4.00: ATAPI: HL-DT-ST DVDRAM GH41N, MN01, max UDMA/100, ATAPI AN
[ 2.118545] ata4.00: configured for UDMA/100
[ 2.128771] ata3.00: ATA-8: Hitachi HDT721032SLA380, ST2OA31B, max UDMA/133
[ 2.128774] ata3.00: 625142448 sectors, multi 0: LBA48 NCQ (depth 31/32)
[ 2.129689] ata3.00: configured for UDMA/133
[ 3.397314] EXT4-fs (sda5): mounted filesystem with ordered data mode

No problems are seen from the log at first glance: DVD was configured for UDMA/100.

I googled the Net and found a lot of similar problems with slow dvd and recipes for fixing. Neither of these recipes helped me.

Happy New Year!

Alexander

[Alexander Samoilov (alexander-samoilov)]

Forgot to mention:

under Windows (this is dual boot machine), writing speed is ok.

I confirm that writing speed is low under k3b (0.11x - 0.22x) on Karmic Koala kubuntu.

Thanks,
Alexander

[Philip Muškovac (yofel)]

I assume this is an issue in the kernel then.

[Pablo Almeida (pabloalmeidaff9)]

It's not happening anymore. I'm running 9.10 now.
I don't know what was changed, but I'm glad it's working :)

Is anyone having the same problem yet?

[Jeremy Foshee (jeremyfoshee)]

Hi Pablo,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/releases/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 400475

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Pablo Almeida (pabloalmeidaff9)]

As I said before, It's fixed for me since Karmic Koala.

[Pablo Almeida (pabloalmeidaff9)]

I can't burn any DVD now, so I don't know about how it's going on Lucid, but I think it's fixed, at least for me.