Ubuntu

Help with bug #66267

Asked by Ulrik Mikaelsson

I've filed bug #66267, since I suspect it might be a general bug in Edgy.

However, I would like some tips and assistance to troubleshoot the issue for MY computer. Any clues welcome.

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Ulrik Mikaelsson
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Terence Simpson (tsimpson) said : 		#1

Do you have DMA enabled? What's the output of hdparm /dev/sda ?

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Ulrik Mikaelsson (rawler) said : 		#2

ulrik@rawler:~$ sudo hdparm /dev/sda

/dev/sda:
 IO_support = 0 (default 16-bit)
 readonly = 0 (off)
 readahead = 256 (on)
 geometry = 36483/255/63, sectors = 586114704, start = 0

I find it a bit peculiar how I don't get to set DMA, but I guess using a SATA-addin board, anything but DMA wouldn't make much sense, and might be forced to yes?

After filing this support request, I've tried building a new 2.6.18 kernel, due to it's alleged improvements in SATA drivers, and now I get the more promising 30-40 MB/sec per second from hdparm -t, but I still have some very strange behaviours. For instance, I have mounted up my old /dev/hda1 onto /mnt/storage, and keep some music files on it. If I in any way touch hda1, anything else on the computer is seriously disrupted, and the computer is more or less brought to a crawl while hda1 is accessed. (And yes, hda has DMA activated)

Another "evidence" of something just not being right about my setup, is that it takes about 8 seconds for firefox to start, if not in disk-cache. (This on a Athlon 2500 with 512MB ram and a supposedly quick SATA disk) On my 1 ghz p3 laptop with half the ram, and a slow laptop disk, starting firefox is about 2-4 seconds.

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Jonathan Jesse (jjesse) said : 		#3

Good morning,

I was looking at support requests and noticed this request is from November 2006. I am wondering if you are still having problems with your Ubuntu install and getting your hard drives to work correctly.

Thanks,

Jonathan

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Ulrik Mikaelsson (rawler) said : 		#4

Well, to some extent, but after giving up and replacing most hardware, it seems to be mostly tied to my old disc.

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Jonathan Jesse (jjesse) said : 		#5

Is this something that still needs to be open or can it be marked as answered?

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Best Ulrik Mikaelsson (rawler) said : 		#6

Hmm, well, let's call it answered Seems to perform at bit better with the current Feisty kernel as well, anyways. Too bad it was never fully resolved, though.