Ubuntu
linux package

  1. Bug #228302
  2. Comment #22

Comment 22 for bug 228302

Revision history for this message
Marc Quinton (mquinton) wrote : Re: No DMA nor 32bits IO support anymore

as reported in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/175022

hello, I'm using karmic, here is the dmesg related to this BUG :

[ 2.824409] ata6.00: ATAPI: TSSTcorpCD/DVDW SH-S162L, TS04, max UDMA/33
[ 2.824443] ata6.00: WARNING: ATAPI DMA disabled for reliablity issues. It can be enabled
[ 2.824446] ata6.00: WARNING: via pata_ali.atapi_dma modparam or corresponding sysfs node.
[ 2.856347] ata6.00: configured for UDMA/33
[ 2.857264] scsi 5:0:0:0: CD-ROM TSSTcorp CD/DVDW SH-S162L TS04 PQ: 0 ANSI: 5
[ 2.860086] sr0: scsi3-mmc drive: 62x/62x writer dvd-ram cd/rw xa/form2 cdda tray
[ 2.860090] Uniform CD-ROM driver Revision: 3.20
[ 2.860191] sr 5:0:0:0: Attached scsi CD-ROM sr0
[ 2.860255] sr 5:0:0:0: Attached scsi generic sg3 type 5
[ 2.860296] Freeing unused kernel memory: 540k freed

the bug seems to be still present under karmic, but with new message error :
 - still having heavy load by default,
 - Issuing echo 1 > /sys/module/pata_ali/parameters/atapi_dma resolved my problem.