[Bug 883618] Re: Console upgrade useless.. XSet warnings all over the screen

[James Hunt]

This xset problem is caused by update-manager calling /usr/bin/xdg-
screensaver which in turns calls xset.

DistUpgrade/DistUpgradeQuirks.py in update-manager invokes 'xdg-
screensaver reset' repeatedly and xdg-screensaver makes a number of
calls to xprop and xset. An example of a problematic call to xset by
xdg-screensaver:

xset -q | grep 'DPMS is Enabled' > /dev/null 2> /dev/null

If DISPLAY is not set (as will be the case on a VT), 'xset -q' will
write the following text to stderr:

xset:  unable to open display ""

xdg-screensaver should probably be calling xset like this:

xset -q 2>/dev/null | grep 'DPMS is Enabled' > /dev/null 2> /dev/null

However, the easiest and quickest fix is to have update-manager invoke
xdg-screensaver with stdout+stderr redirected to /dev/null.

What is not clear at this stage is what is causing the failing calls to
xprop since all the calls made by xdg-screensaver appear to be safe.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to update-manager in Ubuntu.
https://bugs.launchpad.net/bugs/883618

Title:
  Console upgrade useless.. XSet warnings all over the screen

Status in “update-manager” package in Ubuntu:
  Triaged

Bug description:
  Console upgrade via do-release-upgrade of kubuntu desktop is a real pain.  (from a Virtual Terminal, no X11 running)
  Unless you are watching every upgrade's move, there is no way to determine which question got asked.
  It gets scrolled away with  line this:  xset: Unable to open display ""
  also the line gets mis-aligned.

  I was not aware of the issue and watched >1h the screen filled with
  those  error messages..  While the upgrade process waited for my
  answer.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/883618/+subscriptions