Bug#339057: linux-image-2.6.14-1-686: Cannot turn DMA on for /dev/hda
Package: linux-image-2.6.14-1-686
Version: 2.6.14-2
Severity: important
I have 2.6.12 and 2.6.14 (686 P4) installed on this machine. If I boot back into
2.6.12 DMA is on for /dev/hda. It is off in 2.6.14 and will not enable:
# hdparm -d 1 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
This has, as you can imagine, very detrimental effects with ext3
filesystem responsiveness. Ugh!
DMA has worked in every kernel image I have used with this machine,
tracking Sid since summer 2003 with 2.4 and 2.6 kernels. Until now, that
is.
Please let me know what other information you might need. Here is a
hdparm -i just in case that helps.
/dev/hda:
Model=HITACHI_DK23EA-60, FwRev=00K2A0A3, SerialNo=DZ4767
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117210240
IORDY=yes, 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-5 T13 1321D revision 3:
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-1-686
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)
Versions of packages linux-image-2.6.14-1-686 depends on:
ii module-init-tools 3.2-pre9-4 tools for managing Linux kernel mo
ii yaird [linux-initramfs-tool] 0.0.11-12 Yet Another mkInitRD
linux-image-2.6.14-1-686 recommends no packages.
-- no debconf information
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