Marat N.Afanasyev wrote:
i cannot read or write any disk inserted in my
acd0 <PIONEER DVD-RW DVR-111D/1.29>
when this device in udma mode. kernel endlessly repeat that
acd0: setting up DMA failed
and I can access my data on dvd or cd only if I set
atacontrol mode acd0 pio4
Does anybody have such a problem too? is there any ways to bring this
device into udma mode again?
dmesg:
...
atapci1: <ATI IXP600 UDMA133 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xff00-0xff0f at device 20.1 on pci0
ata0: <ATA channel 0> on atapci1
ata0: [ITHREAD]
...
acd0: DVDR <PIONEER DVD-RW DVR-111D/1.29> at ata0-master UDMA66
...
uname -a:
FreeBSD zealot.ksu.ru 7.1-STABLE FreeBSD 7.1-STABLE #1: Tue Jan 20
05:47:24 MSK 2009 r...@zealot.ksu.ru:/usr/obj/usr/src/sys/ZEALOT amd64
grep -A 1 DMA /var/log/messages:
Jan 27 22:12:19 zealot kernel: acd0: setting up DMA failed
Jan 27 22:12:30 zealot last message repeated 3623 times
--
Jan 27 22:12:30 zealot kernel: acd0: setting up DMA failed
Jan 27 22:12:33 zealot last message repeated 919 times
--
Jan 27 22:12:33 zealot kernel: acd0: setting up DMA failed
Jan 27 22:12:45 zealot last message repeated 4021 times
--
Jan 27 22:12:45 zealot kernel: acd0: setting up DMA failed
Jan 27 22:13:05 zealot last message repeated 6571 times
--
Jan 31 21:41:48 zealot kernel: acd0: setting up DMA failed
Jan 31 21:42:10 zealot last message repeated 7531 times
--
Feb 1 08:24:59 zealot kernel: acd0: setting up DMA failed
Feb 1 08:25:09 zealot last message repeated 10 times
I've found a workaround:
replace /sys/dev/ata/* with files from RELENG_7_1
DMA modes work again
--
SY, Marat
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