Arch Linux

tesjo

Member

Registered: 2007-11-30

Posts: 164

Ncq + Mcp61

So after seeing that NCQ support is added for nvidia chipset MCP61 in kernel 2.6.24, I verified my harddrive supports NCQ and tried to enable it. However I cant seem to get it working. I am not sure if I am missing something but here is what may be relevant.

# dmesg |grep -i ncq 
Kernel command line: root=/dev/sda5 ro swncq=1
ata3.00: 312581808 sectors, multi 16: LBA48 NCQ (depth 0/32)

# lspci | grep -i sata
00:08.0 IDE interface: nVidia Corporation MCP61 SATA Controller (rev a2)

The second line, showing LBA48 NCQ (depth 0/32), is the same if I do not include swncq=1.

# cat /sys/block/sda/device/queue_depth 
1
# echo 31 > /sys/block/sda/device/queue_depth 
bash: echo: write error: Input/output error

Any help would be appreciated, thanks.

Last edited by tesjo (2008-02-19 05:34:15)

solstice

Member

Registered: 2006-10-27

Posts: 237

Website

Re: Ncq + Mcp61

i have just tried to make it work here too since the release of the kernel 2.6.24 archlinux package.

and it does seem to do the same thing as you: nothing at all !

i got the same as you in message.log (dmesg)

Izuil

Member

From: Sweden

Registered: 2006-10-07

Posts: 162

Re: Ncq + Mcp61

I'm not even sure what this means but I suppose it means it doesn't work and well... I get the same output for:  dmesg |grep -i ncq

So any fix?