Had a similar problem.
DVD burning was extremely slow (below 1x speed), took forever to write DVDs.
sniffing around the web and looking at my system I found the following
in dmesg:
[ 31.521623] ata1.00: ATA-7: FUJITSU MHV2060AT PL, 00A0, max UDMA/100
[ 31.521627] ata1.00: 117210240 sectors, multi 16: LBA
[ 31.537571] ata1.00: configured for UDMA/100
[ 31.857052] ata2.00: ATAPI: TSSTcorpCD/DVDW TS-L632B, LG34, max UDMA/33
[ 31.857068] ata2.00: simplex DMA is claimed by other device, disabling DMA
[ 32.028830] ata2.00: configured for PIO4
I found this:
http://ubuntuforums.org/showthread.php?t=760121#2
I did the suggested solution:
- in /etc/initramfs-tools/modules , added
pata_atiixp
blacklist ata_generic
- then:
sudo update-initramfs -u
results are amazing...
from the ridiculous speed of 1x (and below) I got a burning speeds of up to 6x
dmesg no shows
[ 28.016707] ata1.00: ATA-7: FUJITSU MHV2060AT PL, 00A0, max UDMA/100
[ 28.016710] ata1.00: 117210240 sectors, multi 16: LBA
[ 28.032662] ata1.00: configured for UDMA/100
[ 28.352140] ata2.00: ATAPI: TSSTcorpCD/DVDW TS-L632B, LG34, max UDMA/33
[ 28.523889] ata2.00: configured for UDMA/33
hope this will be helpful for others
--
Brasero, GNOME's burn:/// and K3b slow dvd burn speed
https://bugs.launchpad.net/bugs/31709
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