Public bug reported:
DMA doesn't appear to work on either optical or HDD.
[EMAIL PROTECTED]:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda5
UUID=b8794ebe-7f8a-4c71-ad70-7df4b3b9fe12 / ext3
defaults,errors=remount-ro 0 1
# /dev/sda7
UUID=c7489d8c-52b9-4b97-9e32-dde3bf912b03 /home ext3 defaults
0 2
# /dev/sda1
UUID=A6940392940363E1 /media/sda1 ntfs defaults,umask=007,gid=46 0
1
# /dev/sda6
UUID=e21c8b4d-f815-4352-90f3-538f71050f4c none swap sw
0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec 0 0
[EMAIL PROTECTED]:~$ sudo hdparm -d1 /dev/sda
/dev/sda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[EMAIL PROTECTED]:~$ sudo hdparm -d1 /dev/scd0
/dev/scd0:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
I installed sdparm from Synaptics but did nothing else to turn it on (?)
[EMAIL PROTECTED]:~$ sudo sdparm -d1 /dev/sda
sdparm: invalid option -- 1
Usage: sdparm [--all] [--clear=STR] [--command=CMD] [--dbd] [--defaults]
[--dummy] [--flexible] [--get=STR] [--help] [--hex] [--inquiry]
[--long] [--page=PG[,SPG]] [--quiet] [--save] [--set=STR]
[--six] [--transport=TN] [--vendor=VN] [--verbose] [--version]
DEVICE
sdparm --enumerate [--all] [--inquiry] [--long] [--page=PG[,SPG]]
[--transport=TN] [--vendor=VN]
where:
--all | -a list all known attributes for given device
--clear=STR | -c STR clear (zero) attribute value(s)
--command=CMD | -C CMD perform CMD (e.g. 'eject')
--dbd | -B set DBD bit in mode sense cdb
--defaults | -D set a mode page to its default values
--dummy | -d don't write back modified mode page
--enumerate | -e list known pages and attributes (ignore device)
--flexible | -f compensate for common errors, relax some checks
--get=STR | -g STR get (fetch) attribute value(s)
--help | -h print out usage message
--hex | -H output in hex rather than name/value pairs
--inquiry | -i output INQUIRY VPD page(s) (def: mode page(s))
--long | -l add description to attribute output
--page=PG[,SPG] | -p PG[,SPG] page (and optionally subpage) number
[or abbrev] to output, change or enumerate
--quiet | -q suppress device vendor/product/revision string line
--save | -S place mode changes in saved page as well
--set=STR | -s STR set attribute value(s)
--six | -6 use 6 byte SCSI mode cdbs (def: 10 byte)
--transport=TN | -t TN transport protocol number [or abbrev]
--vendor=VN | -M VN vendor (manufacturer) number [or abbrev]
--verbose | -v increase verbosity
--version | -V print version string and exit
View or change SCSI attributes of a device (e.g. disk or CD/DVD drive)
sdparm does interact with drives to some extent...
[EMAIL PROTECTED]:~$ sudo sdparm -i /dev/sda
/dev/sda: ATA Hitachi HTS54252 BBFO
Device identification VPD page:
Addressed logical unit:
designator type: vendor specific [0x0], code set: ASCII
00 30 37 31 30 31 33 42 42 30 46 30 30 57 44 47 42 071013BB0F00WDGB
10 48 57 4d 43 HWMC
designator type: T10 vendor identification, code set: ASCII
vendor id: ATA
vendor specific: Hitachi HTS542525K9SA00
071013BB0F00WDGBHWMC
DVD's play fine in vista, are unwatchable in Ubuntu. I don't know what
I'm doing, but it does appear that DMA is not functional on the Acer
5920. If someone wants me to try something I will...within my limited
abilities of course
Oh, yeah -
[EMAIL PROTECTED]:~$ uname -a
Linux frog 2.6.22-14-generic #1 SMP Tue Dec 18 08:02:57 UTC 2007 i686 GNU/Linux
** Affects: ubuntu
Importance: Undecided
Status: New
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Acer 5920 DMA
https://bugs.launchpad.net/bugs/180630
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