Beam/Stem misattached (v2.8.4)

[Thies Albrecht]

Hi everyone!

Like I posted before 
(http://lists.gnu.org/archive/html/bug-lilypond/2006-02/msg00078.html) 
and Daniel also reported 
(http://lists.gnu.org/archive/html/bug-lilypond/2006-04/msg00111.html) 
beams and stems sometimes get misaligned when Y-extent of staff is set. 
Daniel and me were the only users to get this error. There wasn't any 
solution found.

After I installed Ubuntu Dapper Drake and latest version of Lilypond I 
still get misaligned stems. The code

\score {
   \new Staff {
      \override Staff.VerticalAxisGroup #'Y-extent = #'(-5.0 . 5.0)
      \relative c'' {f,8 g f e c d as b g' as g fis c d c b}
   }
}

produces the result attached as Result.png.

What I just found out while writing this eMail is the following:
Using 'lilypond -V test.ly ' on the code above doesn't show misaligned 
stems (see Result-V.png). Unfortunately this isn't a serious solution as 
I tried to apply it to a larger score (26 pages) and there where 
misalignments.

Is there anybody out there who has any hint why I get this error. To 
give more information I've attached the terminal output of 'lilypond -V 
test.ly'.

Kind regards,
Thies Albrecht

% -------------------------------------------
% Terminal output
% -------------------------------------------

GNU LilyPond 2.8.4
warning: Relocation: is absolute: 
argv0=/usr/local//lilypond/usr/bin/lilypond
warning: Relocation: compile prefix=/usr/share/lilypond/2.8.4, new 
prefix=/usr/local/lilypond/usr
PATH=/usr/local/lilypond/usr/bin (prepend)
Setting PATH to 
/usr/local/lilypond/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
warning: Relocation: framework_prefix=/usr/local/lilypond/usr/bin/..
Setting INSTALLER_PREFIX to /usr/local/lilypond/usr/bin/..
Relocation file 
/usr/local/lilypond/usr/bin/../etc/relocate//fontconfig.reloc
Setting FONTCONFIG_FILE to 
/usr/local/lilypond/usr/bin/../etc/fonts/fonts.conf
Setting FONTCONFIG_PATH to /usr/local/lilypond/usr/bin/../etc/fonts
Relocation file /usr/local/lilypond/usr/bin/../etc/relocate//gs.reloc
warning: no such directory: 
/usr/local/lilypond/usr/bin/../share/ghostscript/8.50/fonts for GS_FONTPATH
warning: no such directory: 
/usr/local/lilypond/usr/bin/../share/gs/fonts for GS_FONTPATH
warning: no such directory: 
/usr/local/lilypond/usr/bin/../share/ghostscript/8.50/Resource for GS_LIB
GS_LIB=/usr/local/lilypond/usr/bin/../share/ghostscript/8.50/lib (prepend)
Setting GS_LIB to /usr/local/lilypond/usr/bin/../share/ghostscript/8.50/lib
Relocation file /usr/local/lilypond/usr/bin/../etc/relocate//guile.reloc
GUILE_LOAD_PATH=/usr/local/lilypond/usr/bin/../share/guile/1.8 (prepend)
Setting GUILE_LOAD_PATH to /usr/local/lilypond/usr/bin/../share/guile/1.8
Relocation file /usr/local/lilypond/usr/bin/../etc/relocate//pango.reloc
Setting PANGO_RC_FILE to /usr/local/lilypond/usr/bin/../etc/pango/pangorc
Setting PANGO_PREFIX to /usr/local/lilypond/usr/bin/../
PATH=/usr/local/lilypond/usr/bin/../bin (prepend)
Setting PATH to 
/usr/local/lilypond/usr/bin/../bin:/usr/local/lilypond/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
Setting GUILE_MIN_YIELD_1 to 70
Setting GUILE_MIN_YIELD_2 to 70
Setting GUILE_MIN_YIELD_MALLOC to 70

LILYPOND_DATADIR="/usr/share/lilypond/2.8.4"
LOCALEDIR="/usr/share/locale"

Effective prefix: "/usr/local/lilypond/usr/bin/../share/lilypond/current"
FONTCONFIG_FILE="/usr/local/lilypond/usr/bin/../etc/fonts/fonts.conf"
FONTCONFIG_PATH="/usr/local/lilypond/usr/bin/../etc/fonts"
GS_LIB="/usr/local/lilypond/usr/bin/../share/ghostscript/8.50/lib"
GUILE_LOAD_PATH="/usr/local/lilypond/usr/bin/../share/guile/1.8"
PANGO_RC_FILE="/usr/local/lilypond/usr/bin/../etc/pango/pangorc"
PATH="/usr/local/lilypond/usr/bin/../bin:/usr/local/lilypond/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games"
[/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/lily.scm]
[/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/lily-library.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/file-cache.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/define-music-types.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/output-lib.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/c++.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/chord-ignatzek-names.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/chord-entry.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/chord-generic-names.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/stencil.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/markup.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/music-functions.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/part-combiner.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/autochange.scm][/us
r/local/lilypond/usr/bin/../share/lilypond/current/scm/define-music-properties.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/auto-beam.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/chord-name.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/parser-ly-from-scheme.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/define-context-properties.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/translation-functions.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/script.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/midi.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/layout-beam.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/parser-clef.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/layout-slur.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/font.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/encoding.sc
m][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/fret-diagrams.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/define-markup-commands.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/define-grob-properties.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/define-grobs.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/define-grob-interfaces.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/define-stencil-commands.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/layout-page-layout.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/titling.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/paper.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/backend-library.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/x11-color.scm][/usr/local/lilypond/usr/bin/../share/lilypond/current/scm/safe-lily.scm]
Initializing FontConfig...
adding font directory: 
/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/
adding font directory: 
/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/type1/Building 
font database.
Processing `test.ly'
Parsing...[/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/init.ly[/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/declarations-init.ly[/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/music-functions-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/nederlands.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/drumpitch-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/chord-modifiers-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/script-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/scale-definitions-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/grace-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/midi-init.ly[/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/performer-init.ly]][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/paper-defaults.ly[/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/titling-init.ly]
][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/engraver-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/dynamic-scripts-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/spanners-init.ly][/usr/local/lilypond/usr/bin/../share/lilypond/current/ly/property-init.ly]][test.ly]
test.ly: 0: warning: no \version statement found,  add

\version "2.8.4"

for future compatibility
Interpreting music... 
[/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/emmentaler-20.otf][3]
elapsed time: 0.02 seconds
Element count 160 (spanners 11)
Preprocessing graphical objects...
Grob count 224
Calculating line breaks... 
[/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/emmentaler-11.otf][/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/emmentaler-13.otf][/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/emmentaler-14.otf][/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/emmentaler-16.otf][/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/emmentaler-18.otf][/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/emmentaler-23.otf]
Global shortest duration is 1/8
Optimal demerits: 4.883285
Element count 103.[0]
Calculating page breaks...[century_schoolbook_l__3.865234375]
Layout output to 
`test.ps'...[/usr/local/lilypond/usr/bin/../share/lilypond/current/fonts/otf/CenturySchL-Roma.otf][/usr/local/lilypond/usr/bin/../share/lilypond/current/ps/music-drawing-routines.ps][/usr/local/lilypond/usr/bin/../share/lilypond/current/ps/lilyponddefs.ps]
Converting to `test.pdf'...
Invoking `gs   -dSAFER  -dCompatibilityLevel=1.4  -sPAPERSIZE="a4" 
-dNOPAUSE -dBATCH -r1200  -sDEVICE=pdfwrite -sOutputFile="test.pdf" -c 
.setpdfwrite -f "test.ps"'...GPL Ghostscript 8.50 (2005-12-31)
Copyright (C) 2005 artofcode LLC, Benicia, CA.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
WARNING: /Unicode /Decoding resource is not accessible but it is useful 
for generating ToUnicode CMap.
]