[Bug 118401] Lenovo A740 gave up waiting for root device with kernels >= 4.3

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https://bugzilla.kernel.org/show_bug.cgi?id=118401

--- Comment #23 from Navin <navinp1912@gmail.com> ---
1) First is 

Why does these lines get printed in 4.2
[    0.716610] ahci 0000:00:1f.2: version 3.0
[    0.716620] ahci 0000:00:1f.2: can't find IRQ for PCI INT B; probably buggy
MP table

where as in 4.4 and 4.6 you don't get to see even the "version 3.0".

In your initramfs shell , you should try to see if ahci is actually loaded in
/proc/modules


2)

One more thing is i see in 4.2 you have this in dmesg
libata version 3.00 loaded.

I hope in 4.6 also you get that message.

You can find it out in your initramfs scripts by doing dmesg | grep -i libata


That should tell you that your modules are not loaded/good because of some
changes or some other reason like corruption?

At the end of initramfs you can do modprobe ahci and see that it prints
lsmod | grep ahci


That should tell you the reason why it is not printing those messages in dmesg.

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