Ubuntu
linux-source-2.6.20 package

  1. Bug #110636
  2. Comment #36

Comment 36 for bug 110636

Revision history for this message
Patryk Szulczyk (soulcheck) wrote :

Same problems here on gutsy. Got 7200 hitachi pata drive, wich reports that it should support udma5. It's set on udma2 and hdparm can't change this parameter (or any other). The read/write times are making me really annoyed.

hdparm -i /dev/sda:

 Model=HTS721010G9AT00 , FwRev=MCZOA51A, SerialNo= MPC0N7Y0H8P3UL
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=DualPortCache, BuffSize=7539kB, MaxMultSect=16, MultSect=?16?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=195371568
 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes: pio0 pio1 pio2 pio3 pio4
 DMA modes: mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5
 AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled
 Drive conforms to: ATA/ATAPI-6 T13 1410D revision 3a: ATA/ATAPI-2,3,4,5,6

hdparm -tT:

Timing cached reads: 1390 MB in 2.00 seconds = 695.08 MB/sec
Timing buffered disk reads: 18 MB in 3.46 seconds = 5.20 MB/sec

uname -r:

2.6.22-14-generic

hdparm -d1 /dev/sda:

setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device