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When I first login after rebooting the computer, unity takes 10 min to show up the unity bar. After that when I just logout and login, it's much faster. How to fix this problem?

I already turned off most startup applications. The only apps available are:

Certificate and Key Storage
Dropbox
Files
GPG Password Agent
GSettings Data Conversion
Mount helper
Network
Nvidia X Server Settings
Onboard
PolicyKit Authentication Agent
SSH Key Agent
User folders update
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  • Have you tried the latest 15.04 version?
    – Ludenticus
    Jun 5, 2015 at 0:12

2 Answers 2

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Use utilities such as top and iotop from the tty Ctrl+Alt+F1 to determine if a particular process is using all the CPU, disk, or other resource.

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  • The top process during login are dropbox, rcuos and gvfsd-trash. But I think they all run concurrently (Unity bar should show up first and those process can run later). Is there a bug with Unity? May 29, 2015 at 16:45
  • Are they using significant CPU?
    – Steven
    May 29, 2015 at 16:46
  • No, max is 2% and memory is 3-4% as well May 29, 2015 at 16:46
  • @Steven , Last I checked, Dropbox uses "nice" time, while being CPU and IO aggressive, so it may not appear on standard metrics. A number of things use "background" time of one sort or another and thus bypass standard metrics.
    – killermist
    Jun 5, 2015 at 15:20
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Is this a fresh install or an upgrade? In either case (but more frequently in the latter) old/incomplete configurations can slow down your system greatly (other people would talk of complete freeze of Unity on boot, the 10-minutes time lapse is indeed quite trying for anyone's patience).

In your shoes, I would try a reinstall:

 apt-get update
 apt-get install --reinstall ubuntu-desktop
 apt-get install unity
 apt-get remove --purge nvidia*
 shutdown -h now

Then, after the new bootup, you may reinstall the NVidia drivers.

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  • It's definitely Unity, as I used Gnome and OpenBox and they show up immediately. There might be a bug of Unity not compatible with Nvidia drivers, as I am using CUDA. Jun 4, 2015 at 18:26

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