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Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gdm3 (Ubuntu)
Status: New => Confirmed
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** Tags removed: need-duplicate-check
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https://bugs.launchpad.net/bugs/1751182
Title:
package gdm3 3.26.1-3ubuntu3 failed to install/upgrade: subprocess
installed