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Groups > linux.debian.bugs.dist > #814935

Bug#857132: console-setup: additional info needed ?

Cross-posted to 2 groups.

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[I am sending a CC to pkg-systemd-maintainers@lists.alioth.debian.org]

On Thu, Mar 23, 2017 at 11:07:14AM +0100, Sven Joachim wrote:
> 
> There might be a third possibility which seems to happen on one of my
> systems: the cached_setup_font.sh script does not work correctly when
> run during boot by udev.  Because this is what I am observing here, I
> even added some debug messages to it to see if it is run at all (as
> intended by /lib/udev/rules.d/90-console-setup.rules), and indeed it
> does run but the font still remains unchanged.
> 
> Manually running /etc/console-setup/cached_setup_font.sh (or
> setupcon -f, for that matter) works fine, so I'm a bit at a loss here.

Since systemd makes some configuration of the console, maybe the 
following scenario might explain what we observe:

1. systemd/udev creates a new console.

2. systemd begins the initialization of this console.

3. udev runs /etc/console-setup/cached_setup_font.sh by the following 
rule:

ACTION=="add", SUBSYSTEM=="vtconsole", KERNEL=="vtcon*", RUN+="/etc/console-setup/cached_setup_font.sh"

4. Now cached_setup_font.sh and systemd execute in parallel.  If 
cached_setup_font.sh wins, it will configure the console font first and 
then systemd will load another font.

My tests of how systemd works show that it does the following:

1. It reads the curent font of the current console.

2. Then it does some things to the console(s) (configuration).

3. When a new console is created it loads on it the font read in 1.

Therefore, it seems to me that if cached_setup_font.sh completes its job 
before 1. then everything should be ok.  And if systemd completes its 
configuration before cached_setup_font.sh starts its work, then again 
everything will be ok.  However if both work simultaneously things can 
go wrong.

So, if this scenario is possible, a natural question is what can be done 
in order to make sure the scripts of console-setup do not execute in 
parallel with systemd while configuring the console.

Anton Zinoviev

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Thread

Bug#857132: console-setup: additional info needed ? Karsten Hilbert <karsten.hilbert@gmx.net> - 2017-03-22 11:40 +0100
  Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-22 12:30 +0100
    Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-22 13:10 +0100
      Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-22 14:10 +0100
        Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-22 15:30 +0100
          Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-22 16:00 +0100
            Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-22 18:10 +0100
              Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-22 20:00 +0100
                Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-22 22:30 +0100
        Bug#857132: console-setup: additional info needed ? Sven Joachim <svenjoac@gmx.de> - 2017-03-23 11:10 +0100
          Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-23 11:40 +0100
            Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-24 07:40 +0100
          Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-23 14:10 +0100
            Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-23 14:30 +0100
            Bug#857132: console-setup: additional info needed ? Michael Biebl <biebl@debian.org> - 2017-03-23 14:40 +0100
              Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-23 15:10 +0100
                Bug#857132: console-setup: additional info needed ? Michael Biebl <biebl@debian.org> - 2017-03-23 15:40 +0100
                Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-23 15:50 +0100
                Bug#857132: console-setup: additional info needed ? Felipe Sateler <fsateler@debian.org> - 2017-03-23 18:20 +0100
                Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-23 19:10 +0100
                Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-24 12:00 +0100
                Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-26 16:10 +0200
                Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-26 19:50 +0200
                Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-26 20:30 +0200
                Bug#857132: console-setup: additional info needed ? Anton Zinoviev <anton@lml.bas.bg> - 2017-03-26 23:10 +0200
                Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-03-27 10:20 +0200
                Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-04-05 12:00 +0200
                Bug#857132: console-setup: additional info needed ? Karsten Hilbert <Karsten.Hilbert@gmx.net> - 2017-04-07 12:40 +0200
                Bug#857132: console-setup: additional info needed ? Sven Joachim <svenjoac@gmx.de> - 2017-03-23 19:20 +0100

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