Alt-F1 aborts program when moving away from screen

[Rodney]

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
ed
a

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:
.
q

lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04

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

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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.

[Rodney (hp35)]

I tried to do the "apport-collect 1814604" above, but I never got an indication the browser was trying to connect to the https server. So, I am changing status to confirmed, as shown above.

[Stefan Bader (smb)]

This sounds like it is a duplicate of bug #1813873. Marking this bug as such. If the next kernel version does not fix this, feel free to unmark as duplicate.