Comment 89 for bug 1832138

Tested bionic-proposed with both original VM that exhibited the problem on upgrade and a separate VM used to test the work-around (uncommenting WaylandEnable=false in /etc/gdm3/custom.conf).

Both VMs upgraded and ran successfully using https://wiki.ubuntu.com/Testing/EnableProposed.

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# First test w/older VM that first exhibited the problem...

# [ No network card present ]
# Booted from old, saved VM where update first screwed up:

    $ uname -a
    Linux linuxTest 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

# Added bionic-proposed repository in update / developer options
# [ Enabled network card for VM ]
# Updated to current; restarted
# Booted & logged in normally

    $ uname -a
    Linux linuxTest 4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

# Yea!

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# Second test with VM used for later testing of the problem...

# [ No network card present ]
# Re-tested with more recent problem VM...
# Removed fix in /etc/gdm3/custom.conf (re-commented WaylandEnable=false)
# Booted to watch login hang
# {Shift} boot w/Grub in recovery mode to recovery mode menu; resumed startup.
# Logged in (desktop @800x600); re-set desktop width

    $ uname -a
    Linux Linux linuxTest 4.15.0-52-generic #56-Ubuntu SMP Tue Jun 4 22:49:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

# Added bionic-proposed repository in update / developer options
# [ Enabled network card for VM ]
# Updated to current; restarted
# Booted & logged in normally

    $ uname -a
    Linux linuxTest 4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

# Yea!

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