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

[bugzilla-daemon@bugzilla.kernel.org]

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

--- Comment #13 from Navin <navinp1912@gmail.com> ---
Your block devices are not being detected due to some problem. Maybe the driver
for it is not getting loaded.

Can you post the complete dmesg from 4.2 working ?

In the initramfs pre mount scripts 

Instead of dmesg | grep -i blocks

you can add

dmesg | grep -i achi
dmesg | grep -i scsi
dmesg | grep -i sata
dmesg | grep -i  ata[0-4]
cat /proc/scsi/scsi

The below device is missing  in your 4.6 .

Below is your 4.2 

[7.6.] SCSI information (from /proc/scsi/scsi)

(from running 4.2)

Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: ATA      Model: ST1000LM014-1EJ1 Rev: LIV6
  Type:   Direct-Access                    ANSI  SCSI revision: 05

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