kernel: [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:37:crtc-0] flip_done timed out

 Problem

The following error messages are logged in messages file while the server is running:

kernel: [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:37:crtc-0] flip_done timed out

 Solution

For safety reasons, please create a virtual machine snapshot. https://eis-vss.atlassian.net/wiki/spaces/VSSPublic/pages/722796578/Request+Virtual+Machine+Snapshot?src=search

Currently this bug has been reported and has no solution. This is a workaround that has been tested on Ubuntu 20.x:

  1. Edit the file: /etc/default/grub and the following text:

    modprobe.blacklist=vmwgfx


    file: /etc/default/grub

    .. GRUB_CMDLINE_LINUX_DEFAULT="maybe-ubiquity ipv6.disable=1 modprobe.blacklist=vmwgfx" ...

     

  2. Update grub

     

  3. Reboot the server

     

  4. Log in and verify the error is no longer in the error logs:

 

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