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I just installed Ubuntu 16.04 on a Gigabyte PC. Installation went without any issues. This OS is fantastic. I just have one problem, it freezes often usually while browsing the Internet.Can someone please steer me in the right direction?

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    How much RAM? Which browser? – user423626 May 27 '16 at 6:05
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Since it's a Gigabyte PC I presume it is Intel-based.
Look in the comment section for changing "intel_idle.max_cstate", in the following bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1503731.

Another bug report in kernel bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=109051.

You can have a go in installing a newer kernel version kernel, I read somewhere this might be fixed in newer kernel versions(4.5 and up), here is a guide: https://wiki.ubuntu.com/Kernel/MainlineBuilds.

Hope it helped.

Edit:
Open terminal, Ctrl + Alt + T
Use sudo nano /etc/default/grub to open grub configuration file.
Replace the line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

with this line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=1"

Press Ctrl + x then "Y" (for yes, to save, and press enter), then type sudo update-grub, enter password if needed and press enter.
After Grub updated restart and hope it worked.

I also recommend closing the PCs if they are not needed, as this solution will only extend the duration until they freeze.

  • Thank you so much for all the questions, comments and suggestions. I am using 8 Gigs of RAM. The Browser is Firefox and the Mouse stops moving entirely. By the way, I installed Ubuntu 16.04 on two new Gigabyte PCs , one with a SSD of 120 GB (ADATA), the other with a 240 GB SSD (Kingstone). They both freeze. The one with the 240 GB SSD about once every 24 hours. The one with the 120 GB SSD about once every 1-2 hours. Again, thank you for your answers. – Wilfredo Perez Jun 3 '16 at 1:28
  • Hello Wilfredo, try the edited solution and let me know if it improved your uptime. – adi Jun 7 '16 at 7:36
  • same problem here. let's test the solution – Morteza Rastgoo Jul 16 '16 at 5:39
  • Had same problem, tried the grub option, and also disabled Intel virtualization in the BIOS, and the system can now play video for hours without freeze. Now of course I don't know which of the two changes was most effective . . . (Intel Celeron J1900 Atom) – Roland Apr 22 '18 at 16:24
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My problem seemed to be Nouveau graphics drivers. First i updated kernel from 4.4 to 4.7-RC4 but it didn't help. Then I changed the graphics drivers from Nouveau to nvidia-340 and the random crashes seems to be gone...

  1. System Settings -> Software & Updates -> Additional Drivers: Using NIVIA binary drirver - version 340.96 from nvidia-340 (open source)
  2. reboot

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