[Bug 1828715] [NEW] nouveau causes system freeze during periods of high disk activity

[lvm]

Public bug reported:

New install of 18.04 started to freeze when lots of files were being
copied from one filesystem to another usually after several hundred
gigabytes to a couple of terabytes: no messages, display freezes, no
reaction to mouse, keyboard or network, the only way out is to
powercylce the system. First I was copying from ext4 disk to a degraded
md raid6, then, to isolate the problem, from one 10T ext4 disk to
another 10T ext4 disk with the same result. Usually system froze so
abruptly that there was nothing in syslog but finally some information
was saved (attached) - probably partial as there was a block of
corrupted data after it, and it pointed to nouveau. Replacing nouveau
with proprietary nvidia 340.107 driver resolved the issue. Video is
GeForce GT 240

** Affects: xserver-xorg-video-nouveau-hwe-18.04 (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "syslog.1"
   https://bugs.launchpad.net/bugs/1828715/+attachment/5263204/+files/syslog.1

** Package changed: ubuntu-release-upgrader (Ubuntu) => xserver-xorg-
video-nouveau-hwe-18.04 (Ubuntu)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1828715

Title:
  nouveau causes system freeze during periods of high disk activity

Status in xserver-xorg-video-nouveau-hwe-18.04 package in Ubuntu:
  New

Bug description:
  New install of 18.04 started to freeze when lots of files were being
  copied from one filesystem to another usually after several hundred
  gigabytes to a couple of terabytes: no messages, display freezes, no
  reaction to mouse, keyboard or network, the only way out is to
  powercylce the system. First I was copying from ext4 disk to a
  degraded md raid6, then, to isolate the problem, from one 10T ext4
  disk to another 10T ext4 disk with the same result. Usually system
  froze so abruptly that there was nothing in syslog but finally some
  information was saved (attached) - probably partial as there was a
  block of corrupted data after it, and it pointed to nouveau. Replacing
  nouveau with proprietary nvidia 340.107 driver resolved the issue.
  Video is GeForce GT 240

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau-hwe-18.04/+bug/1828715/+subscriptions