System Info:

  1. Model Name: Lenovo ThinkPad 11e

  2. RAM: 4G

  3. Product Page: http://psref.lenovo.com/Detail/ThinkPad_11e?M=20D90020US

  4. Graphics and Driver Info:

    00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0e)
     Subsystem: Lenovo Atom Processor Z36xxx/Z37xxx Series Graphics & Display [17aa:2224]
     Kernel driver in use: i915
     Kernel modules: i915

App versions:

  1. Google Chrome: Version 67 in both Ubuntu version(16.04 and 18.04)

  2. Mozilla Firefox: Version 60 in both Ubuntu version(16.04 and 18.04)

  3. Thunderbird: Version 52 in both Ubuntu version(16.04 and 18.04)

What happens:

  1. I usually browse with multiple tabs open and suddenly the mouse and keyboard freeze and and I am forced to restart with the power button. None of the shortcuts work once the system hangs.

  2. This happens almost every time I use the system.

Worst to Best:

  1. Google Chrome - Hangs with just 3-4 tabs of YouTube open.

  2. Thunderbird - Hangs when present with lesser number of tabs (3-4) of Mozilla Firefox.

  3. Mozilla Firefox - Hangs with 8+ tabs present with heavy video or image presence.

Things I have tried:

  1. Re-installation

Current solution:

Got fed-up and downgraded to 16.04.4 which has been stable so far. Have been using 14.04 previously for many years with no issues.

  • 1
    You can monitor memory usage while running. See How can I monitor the memory usage?. Oh, and what CPU and how many cores?
    – user3169
    Commented Jun 3, 2018 at 5:51
  • Also, are the browser versions the same in 18.04 vs. the 16.04 you say works OK?
    – user3169
    Commented Jun 3, 2018 at 5:54
  • Added app versions as requested. If I try 18.04 again, I will monitor memory usage and see. The CPU info is in the product page link.
    – codepk
    Commented Jun 4, 2018 at 21:09
  • Which graphics adapter does the machine in question have and which driver(s) do they use? You can find out with lspci -nnk | grep -A3 -Fe '[0300]'. Commented Jun 5, 2018 at 14:39
  • @DavidFoerster Added the info as requested.
    – codepk
    Commented Jun 21, 2018 at 4:37

1 Answer 1


There was a documented, since resolved GNOME problem with memory leaks in 18.04 LTS. Details on its resolution are in Bug 1763878 and 1672297. It has also been resolved in 18.10 and 19.04. 16.04 LTS uses Unity, not GNOME, and therefore does not exhibit the issue.

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