boot parameter libata.force=1.5Gbps not recognized
Hi,
Adding "libata.force=1.5Gbps" to the boot parameters for the installer
doesn't work. It leads to a message saying "unknown parameter 5Gbps".
(Trying 3.0Gbps leads to "unknown parameter 0Gbps" so it looks like it
could be a parsing issue.)
Details:
I have a Sony Vaio VGN-NS140E laptop that was working fine with sid
until its hard drive died recently, so I got an SSD and prepared a usb
stick with the wheezy beta2 installer. The install was okay generally,
though there were many serious errors when accessing the drive, making
the system unusable. Searching online, I found out that some computers,
even ones whose SATA controllers are supposedly capable of 3Gbps, can
only manage 1.5Gbps and have problems with the auto-negotiation to drop
from 3Gbps to 1.5Gbps. The old hard drive that came out of the laptop
had a jumper on it, limiting its speed to 1.5Gbps, but this new SSD
doesn't have such a jumper setting, as far as I could find out.
To test that dropping to 1.5Gbps would solve the problems, I tried
installing Linux Mint. It recognized the boot parameter correctly,
leading to no drive errors at all and good performance (within the
bounds of 1.5Gbps, or course --- still much faster than my old hard
drive). The kernel for Mint was 3.2.0-23 and the one in the Debian
installer was 3.2.0-3, I think. (By the way, without that parameter,
Mint also had massive problems with the new drive.)
Selim
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