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I am using Ubuntu 16.04 in my Dell Inspiron 3521 (2013 model) for the past year. I have changed my hard disk with a Samsung 850 Pro SSD.

I've been using Samsung SSD for the past 5 months and I never faced this issue.
Suddenly Ubuntu got stuck while booting up, then I had to force shutdown, and after restarting I get a black screen with the messages shown in the screen photo and then finally it boots up.

This always happens now. My laptop never boots up on the first try. I also tried reinstalling the Ubuntu, but I still have the same issue.

see error message here

Edit-1:

After running lsscsi --verbose I got below response:

[0:0:0:0] disk ATA Samsung SSD 850 4B6Q /dev/sda dir: /sys/bus/scsi/devices/0:0:0:0 [/sys/devices/pci0000:00/0000:00:1f.2/ata1/host0/target0:0:0/0:0:0:0]

Edit-2: I have also tried booting up from the live ubuntu USB, in that case as well I get the same error as in above photo.

Even to check if any ubuntu update has messed up I re-installed ubuntu 16.04 again and in it's first boot up it got stuck.

Vivek Shukla
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2 Answers2

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I had the same issue, and identified the faulty drive using lssci, as per advice from oldfred. It was the only drive not showing up in the list. In my case, it turned out to be an external HD connected via eSATA.

Fanta
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This problem is solved by Ubuntu kernel update. Actually, this was a kernel issue, when I got this issue my Ubuntu was using Linux kernel version 4.13, but after some time the kernel update to 4.15 made it go away.

I knew that my hardware had no problem, I had run tests from above comments and all were fine.

Vivek Shukla
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