Ubuntu – Significant increase in booting time after update in Ubuntu 14.04

14.04boot

Did anyone else notice a sudden increase in booting time after a recent update (maybe, 2 or 3 weeks ago) in Ubuntu 14.04. After showing the Ubuntu logo, there is a black screen that takes a lot of time to finish. After that, Ubuntu loads the desktop and everything runs as usual.

This is happening in a laptop Dell Inspiron 1545 (Pentium 2GHz and 8GB RAM).

I have installed bootchart and this is the image produced:

enter image description here

If I'm reading the output correctly, it takes 1 minute and 28 seconds to load.

I'm almost certain that I haven't installed anything recently. Does anyone know what could be the cause?

UPDATE

It takes 55 seconds to show the black screen and lasts 43 seconds until the desktop appears. A few seconds before that, it is possible to move the cursor. It looks similar to the interval with low CPU use in the upper graph from the bootchart output.

Best Answer

  • Thanks for posting the boot chart. I'm no expert but I noticed these issues:

    • Toward the start of the boot, there's a fsck followed by a mount operation that is taking a long time (over 20 seconds). A fair bit of later stuff seems to be waiting for this operation.

    • Further on in the boot, there is what looks like gpu-manager running a "find" operation that is taking a long time. I don't know why this would be, but a fair bit of later stuff (including lightdm, the graphical desktop) is waiting on this to finish.

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