This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1884726

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1884726

Title:
  [TTM] Buffer eviction failed

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Under some usage conditions on Ubuntu 20.04 I get an almost complete system 
freeze and after some minutes I get this issuing a dmesg command: "[TTM] Buffer 
eviction failed".
  I can always reproduce the problem using Streetview function inside 
maps.google.com using Firefox (77.0.1).
  My kernel version is 5.4.0-38 and my graphic card is an old Nvidia

  01:00.0 VGA compatible controller: NVIDIA Corporation G86M [GeForce
  8400M GS] (rev a1

  When I switch to closed source Nvidia proprietary driver (ver.
  340.108) I have no issues.

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