I don't know if this helps any. AFAICT sdparm can talk to both devices,
but hdparm can't talk to the optical drive, scd0?
sudo sdparm -v /dev/scd0
/dev/scd0: TSSTcorp CD/DVDW TS-L632D AC01 [cd/dvd]
Read write error recovery [0x1] mode page [PS=0]:
AWRE 0 [cha: y, def: 0]
ARRE 0 [cha: n, def: 0]
PER 0 [cha: y, def: 0]
Write parameters (MMC) [0x5] mode page [PS=0]:
BUFE 0 [cha: y, def: 0]
WR_T 1 [cha: y, def: 1]
MULTI_S 3 [cha: y, def: 3]
>> Control mode page [0xa] not supported
Informational exceptions control [0x1c] mode page [PS=0]:
EWASC 0 [cha: n, def: 0]
DEXCPT 0 [cha: n, def: 0]
MRIE 0 [cha: n, def: 0]
[EMAIL PROTECTED]:~$ sudo hdparm -v /dev/scd0
/dev/scd0:
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Inappropriate ioctl for device
[EMAIL PROTECTED]:~$ sudo sdparm -v /dev/sda
/dev/sda: ATA Hitachi HTS54252 BBFO
Read write error recovery [0x1] mode page [PS=0]:
AWRE 1
ARRE 1
PER 0
Caching (SBC) [0x8] mode page [PS=0]:
WCE 1
RCD 0
Control [0xa] mode page [PS=0]:
SWP 0
>> Informational exceptions control mode page [0x1c] not supported
[EMAIL PROTECTED]:~$ sudo hdparm -v /dev/sda
/dev/sda:
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
geometry = 30401/255/63, sectors = 488397168, start = 0
[EMAIL PROTECTED]:~$
--
Acer 5920 DMA
https://bugs.launchpad.net/bugs/180630
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