Comment 307 for bug 59695
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| Mathieu HAVEL (mathieu-havel) wrote | #307 |
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73416ba
(Get the code!)
Well, Dell went to replace my hard drive, and they seem to be aware of the problem since they replace it by another one (a Seagate ST91208220AS) on which I can apply partly the bug fix :
* with -B 255 it completely stops the parking/unparking cycle
* with -B 254 it does nothing.
The my previous one was a really strange case, and more when we know that the Samsung was recognized in the SMART database, and the Seagate is not !
Last but not least, hdparm is always giving me the BIOS value for PowerManagement (set to 254) but this value is NOT applied by default on Ubuntu, and if I change it to 255, hdparm still indicates 254... Here I do not understand : either I have a bad configuration or either the problem is not "that simple" as the ugly fix let us suggest !
My conclusion is that, as I said, the ugly fix works (fortunatly) for about 95% of cases, but it is not fixing directly the "real" problem : I think it is not yet a direct solution. We have to find (and define) the true cause of this "too much" cycling.
I hope such information can help, and I am looking forward to give more if needed.
Mathieu