It is not only a brasero bug, but valid for the complete distribution:
K3b behaves exactly the same way:
while burning the system becomes much slower, even the mouse moves less
fluently. After burning everything is normal again. The burning itself is too
slow, too: 0,8x instead of 8x.
It is conspicious that the drive's cache (not the software cache) is not
completly filled. That is why I thought that DMA is possibly not activated but
this is not the case:
/dev/scd0:
Model=HL-DT-ST DVDRAM GSA-T40N , FwRev=JQ01 ,
SerialNo=K0182MK4525
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
Drive conforms to: Unspecified: ATA/ATAPI-4,5,6,7
* signifies the current active mode
I attached the k3b report, perhaps it can help to identify the problem.
** Attachment added: "k3b.txt"
http://launchpadlibrarian.net/20743817/k3b.txt
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Brasero, When write all go slowly......
https://bugs.launchpad.net/bugs/305333
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