[ubuntu-it] impossibile attivare DMA in modo permanente su hd serial ata

[Daniele Visaggio]

ragazzi, non riesco ad attivare il dma in modo permanente sul mio hd
serial ata.

Ho aggiunto ad /etc/hdparm.conf le seguenti righe:

Codice:
/dev/sda {
  dma = on
  }

ma al riavvio, se faccio 

Codice:
 sudo hdparm /dev/sda

/dev/sda:
 IO_support   =  0 (default 16-bit)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 38913/255/63, sectors = 625142448, start = 0

il dma non risulta cmq. abilitato...Huh?

allora, seguendo questa soluzione
( http://forum.ubuntu-it.org/index.php/topic,15610.0.html ), ho dato
lsmod dopo aver dato il comando per caricare il dma, ma non capisco qual
è il nome del modulo che devo aggiungere ad /etc/modules. Vi allego
l'uoutput di lsmod.

Qualcuno mi aiuta gentilmente ad individuarlo? 

Grazie a tutti
-------------- parte successiva --------------
pastore a pastore-desktop:~$ sudo hdparm -d1 /dev/sda

/dev/sda:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Inappropriate ioctl for device
pastore a pastore-desktop:~$ lsmod
Module                  Size  Used by
nls_utf8                3200  1 
ntfs                  112116  1 
ipt_TCPMSS              5376  1 
xt_tcpmss               3456  1 
xt_tcpudp               4480  1 
iptable_filter          4224  1 
ip_tables              15204  1 iptable_filter
x_tables               16132  4 ipt_TCPMSS,xt_tcpmss,xt_tcpudp,ip_tables
binfmt_misc            13448  1 
rfcomm                 42260  0 
l2cap                  27136  5 rfcomm
bluetooth              53476  4 rfcomm,l2cap
cpufreq_userspace       5408  0 
cpufreq_stats           7744  0 
freq_table              6048  1 cpufreq_stats
cpufreq_powersave       2944  0 
cpufreq_ondemand        8876  0 
cpufreq_conservative     8712  0 
video                  17540  0 
tc1100_wmi              8324  0 
sbs                    16804  0 
sony_acpi               6412  0 
pcc_acpi               14080  0 
i2c_ec                  6272  1 sbs
hotkey                 11556  0 
dev_acpi               12292  0 
button                  7952  0 
battery                11652  0 
container               5632  0 
ac                      6788  0 
asus_acpi              17688  0 
pppoe                  16064  2 
pppox                   4872  1 pppoe
ipv6                  272288  12 
ppp_generic            30612  6 pppoe,pppox
slhc                    8448  1 ppp_generic
sbp2                   24584  0 
lp                     12964  0 
af_packet              24584  4 
tsdev                   9152  0 
snd_mpu401              9640  0 
snd_mpu401_uart        10240  1 snd_mpu401
snd_hda_intel          20116  1 
snd_hda_codec         164608  1 snd_hda_intel
snd_rawmidi            27264  1 snd_mpu401_uart
snd_seq_device          9868  1 snd_rawmidi
snd_pcm_oss            47360  0 
snd_mixer_oss          19584  1 snd_pcm_oss
snd_pcm                84612  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_timer              25348  1 snd_pcm
sg                     37404  0 
nvidia               6830836  22 
serio_raw               8452  0 
snd                    58372  12 snd_mpu401,snd_mpu401_uart,snd_hda_intel,snd_hda_codec,snd_rawmidi,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore              11232  1 snd
i2c_core               23424  2 i2c_ec,nvidia
snd_page_alloc         11400  2 snd_hda_intel,snd_pcm
psmouse                41352  0 
agpgart                34888  1 nvidia
parport_pc             37796  1 
parport                39496  2 lp,parport_pc
analog                 12960  0 
gameport               17160  1 analog
shpchp                 42144  0 
pci_hotplug            32828  1 shpchp
evdev                  11392  1 
pcspkr                  4352  0 
floppy                 63044  0 
ext3                  142856  2 
jbd                    62228  1 ext3
usb_storage            75072  2 
libusual               17040  1 usb_storage
ohci1394               37040  0 
ieee1394              306104  2 sbp2,ohci1394
ohci_hcd               22532  0 
ehci_hcd               34696  0 
forcedeth              32268  0 
usbcore               134912  5 usb_storage,libusual,ohci_hcd,ehci_hcd
ide_generic             2432  0 
ide_cd                 33696  0 
cdrom                  38944  1 ide_cd
generic                 6276  0 
amd74xx                15260  0 [permanent]
sd_mod                 22656  6 
sata_nv                11268  2 
libata                 74892  1 sata_nv
scsi_mod              144648  5 sbp2,sg,usb_storage,sd_mod,libata
thermal                15624  0 
processor              31560  1 thermal
fan                     6020  0 
fbcon                  41504  0 
tileblit                3840  1 fbcon
font                    9344  1 fbcon
bitblit                 7168  1 fbcon
softcursor              3328  1 bitblit
vesafb                  9244  0 
capability              5896  0 
commoncap               8704  1 capability