I confirm this bug exists on 8.10 (mythbuntu)
BIOS is set to UDMA 100 and shows it at startup, but hdparm reports
udma2 and dmesg the 40-wire cable - NOT!
I tried this solutions that worked for a guy:
Modified /etc/modules:
Code:
fuse
lp
#custom start
amd74xx
mousedev
psmouse
via82cxxx
piix
ide-core
#ide-generic
ide-disk
ide-cd
#custom end
Added to /etc/hdparm.conf:
Code:
/dev/sda {
dma = on
io32_support = 1
write_cache = on
}
but it did nothing for me - any suggestions?
BTW: System is old but proven capable of running at udma5...
--
Intrepid kernel UDMA/33 (slow disk transfer rate)
https://bugs.launchpad.net/bugs/285595
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