7GB in my case. I am the only user, but what I do in a rare case is put the 
computer into Suspend mode. 
Truly stupid behavior, to fill up a log with 7GB+++ of same error, without ever 
showing an on-screen notification to a user (ONLY ONCE PLEASE, NOT SEVEN 
BILLION NOTIFICATIONS), ASSUMING this error has any significance to the user 
whatsover.

Yes, Linux suspend behavior needs polishing. Video does not resume, etc,
etc, etc. I only use it on a rare forced need, but multiple things break
on resume of session after a Suspend.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to nvidia-graphics-drivers-418 in Ubuntu.
https://bugs.launchpad.net/bugs/1846374

Title:
  Having a video playing/paused when switched to another user generates
  gigabytes of error logs

Status in nvidia-graphics-drivers-340 package in Ubuntu:
  Confirmed
Status in nvidia-graphics-drivers-418 package in Ubuntu:
  Confirmed
Status in nvidia-graphics-drivers-435 package in Ubuntu:
  Confirmed
Status in nvidia-graphics-drivers-440 package in Ubuntu:
  Confirmed

Bug description:
  To replicate:

  1. Start a video playing, for example in vlc. 'avcodec decoder: Using
  NVIDIA VDPAU Driver Shared Library  418.56  Fri Mar 15 12:31:51 CDT
  2019 for hardware decoding'

  2. Optionally pause it.

  3. Switch to another user.

  The original user's ~/.xsession-errors will rapidly fill up with
  errors along the lines of "vdpau_chroma filter error".

  At the same time, errors are put in /var/log/syslog as well:

  [00007f9d604810a0] vdpau_chroma filter error: video mixer features failure: 
An invalid handle value was provided.
  [00007f9d604810a0] vdpau_chroma filter error: video mixer attributes failure: 
An invalid handle value was provided.
  [00007f9d604810a0] vdpau_chroma filter error: video mixer rendering failure: 
An invalid handle value was provided.
  (repeat ad nauseum)

  At least one of the two will rapidly fill up its partition and
  problems will arise.

  With AMD video hardware and driver, the video continues playing - you
  can hear the sound despite being in the other user.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-340/+bug/1846374/+subscriptions

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