David C. Rankin wrote:
On 01/19/2011 11:02 AM, Dave Howorth wrote:
David Haller wrote:
I've been seen the 'CHS sector 0' on an external eSATA drive (where the drive is simply slotted in[1]), but speed stayed up with that.
I have the reducing of the speed with un-DVDs, i.e. discs with defect sectors, where the drive (IDE btw) needs minutes to read and "fail" the sector.
With internal drives, I'd recommend checking / replacing the SATA-Cables (best those with clips).
Thanks for the feedback, David. I should have mentioned that I've tried multiple cables of different designs both for the data and the power cable, and I've been careful to keep the connectors aligned.
Also, since all the problems seem to go away when I run Knoppix, it seems like it may not be a hardware problem at all now! That's why I called it weird :)
Must do more testing.
This sounds like a kernel issue. It may be worth subscribing for a week to get this issue out there and find out what the possible kernel causes are that could result in the different behavior you see among the different distro kernels. You can find the info for the mailing list at:
http://www.kernel.org/pub/linux/docs/lkml/
IT IS A HIGH VOLUME LIST. So you will want to set up a folder and filter for incoming messages. Filtering on 'From, To, Cc or Bcc' with 'kernel.org' works fine.
The only other thought I have is "Have you tried setting the jumper to limit throughput to 1.5 Gbps?" I know you said it was a 1.5 Gbps drive, but I have seen similar behavior when I have omitted the 1.5 Gpbs jumper on Seagate drives on older systems.
Just to let everybody know, this did indeed turn out to be a software problem. Or rather there's a kernel patch that fixes a hardware incompatibility. The VIA 6241-based controller that I bought works with current generation Samsung (and WD) disks only with recent kernels. Specifically, those where a patch that rejoices in the name "Joseph Chan's magic patch" has been applied. I joined the linux-ide list instead of the kernel list (much lower volume!) and with Tejun's help, I managed to sort it out. Cheers, Dave -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org