[Bug 1704929] Re: Repeating "can't open /dev/ttyX: No such device or address" messages during installation

[Frank Heimes]

Since this only seems to happen with xenial, and not with any other
Ubuntu release (Y to E) and since it only happens during install time,
and even then only with using the console for the entire installation
(and not using the 2nd stage via ssh), I closing this as Won't Fix.

** Changed in: ubuntu-z-systems
       Status: Confirmed => Won't Fix

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Title:
  Repeating "can't open /dev/ttyX: No such device or address" messages
  during installation

Status in Ubuntu on IBM z Systems:
  Won't Fix
Status in console-setup package in Ubuntu:
  Incomplete

Bug description:
  [Impact]

  console-setup continuously tries to open /dev/tty[1-6] on s390x, when
  such consoles do not exist on s390x.

  This can be seen on boot in the output from the initramfs, and during
  the installer.

  [Cause]

  It seems to me that the postinst of the console-setup is incorrect for
  s390, since on s390 Linux tty[1-6] do not exist in any modes (LPAR,
  z/VM, KVM)

  [Solution]
  I do not know what ACTIVE_CONSOLES should be set as, my guess is to set it to... "guess". Usually it should be slcp, but that depends on which consoles are configured/activated in the given KVM.

  [Testcase]
  On boot, scroll all the messages and makesure there are no error messages about inability to open /dev/tty*

  [Original Bug Report]

  During the installation (z/VM guest and KVM virtual machine) of Ubuntu
  Server 16.04.1 (and 16.04.2) repeating messages of the form:

  "
  Select and install software ... 10% can't open /dev/tty4: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty3: No such device or address
  can't open /dev/tty4: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty3: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty4: No such device or address
  can't open /dev/tty4: No such device or address
  can't open /dev/tty3: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty3: No such device or address
  ... 20% can't open /dev/tty4: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty3: No such device or address
  ... 30%... 40% can't open /dev/tty3: No such device or address
  can't open /dev/tty4: No such device or address
  can't open /dev/tty2: No such device or address
  ... 50% can't open /dev/tty3: No such device or address
  can't open /dev/tty4: No such device or address
  can't open /dev/tty2: No such device or address
  ... 60% can't open /dev/tty2: No such device or address
  can't open /dev/tty3: No such device or address
  can't open /dev/tty4: No such device or address
  can't open /dev/tty2: No such device or address
  ...
  Finishing the installation ... 13%... 22%... 31% can't open /dev/tty3: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty4: No such device or address
  ... 40%... 50%... 63%... 72%... 81% can't open /dev/tty4: No such device or address
  can't open /dev/tty2: No such device or address
  can't open /dev/tty3: No such device or address
  ... 90% The system is going down NOW
   Sent SIGTERM to all processes
   Sent SIGKILL to all processes
   Requesting system reboot
  01: HCPGSP2629I The virtual machine is placed in CP mode due to a SIGP stop CPU 00.
  02: HCPGSP2629I The virtual machine is placed in CP mode due to a SIGP stop CPU 00.
  03: HCPGSP2629I The virtual machine is placed in CP mode due to a SIGP stop CPU 00.
  00 Storage cleared - system reset.
  00 zIPL ......
  "

  They start to occur when the software gets installed:

  "Select and install software ... 10% can't open /dev/tty4: No such
  device or address"

  And only stop with the final system reboot at the end of the
  installation.

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