This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1814604

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: bionic

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  Alt-F1 aborts program when moving away from screen

Status in linux package in Ubuntu:

Bug description:
  This problem was introduced in the "4.15.0-44" or "4.15.0-45" kernel
  in late January 2019.  The same problem happens in 32 bit and 64 bit
  systems -- both installed before January 2019 and AFTER the problem
  was introduced (that is, complete new installations AFTER).  I have an
  Acer Aspire R15 laptop.

  To reproduce the problem -- after the system boots:

  Ctrl-Alt-F1 (unity) or Ctrl-Alt-F3 (gdm3).  For arguments sake, I'll only 
show unity.
  type in:
  cd /tmp

  And that puts you into the "ed" editor in "append" (add) mode.

  Ctrl-Alt-F2 (or Alt-F2) and duplicate the typing in of F1 above
  Ctrl-Alt-F3 (or Alt-F3) and duplicate the typing in of F1 above

  Now, Ctrl-Alt-F1 (or Alt-F1) back to screen #1.  It is at the system
  prompt rather than and "ed" prompt, and the error "stdin: Resource
  temporarily unavailable" is displayed.  If you move to "Alt-F2" or
  "Alt-F3", you don't see the error message there, and those screens
  seem unaffected -- that is, it seems to affect only "Alt-F1".  For
  some reason screen #1 aborts the program that is running when you move
  away from "Alt-F1".  You can confirm that the program aborts when
  moving away from "Alt-F1" rather than moving back to "Alt-F1" by doing
  an "ssh" to that computer from another computer and doing a "ps -e |
  egrep tty1" before and after moving away from "Alt-F1".

  You can exit those "ed" sessions back to the system prompt by typing in:

  lsb_release -rd
  Description:  Ubuntu 18.04.1 LTS
  Release:      18.04

  version.log --> Ubuntu 4.15.0-45.48-generic 4.15.18

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