diff -Naur libburn-1.5.2/cdrskin/cdrfifo.c libburn-1.5.2.pl01/cdrskin/cdrfifo.c
--- libburn-1.5.2/cdrskin/cdrfifo.c	2018-09-06 12:03:40.000000000 +0200
+++ libburn-1.5.2.pl01/cdrskin/cdrfifo.c	2019-11-25 19:38:34.000000000 +0100
@@ -28,7 +28,20 @@
 #ifndef Cdrfifo_standalonE
 /* for burn_os_alloc_buffer() */
 #include "../libburn/libburn.h"
-#define Libburn_has_open_trac_srC 1
+
+/* ts B91124:
+   DISABLED, because this spoils multi-track burning by slowing down first
+   track and stalling before the second track begins. Obviously a problem
+   with chained input and waiting for full O_DRIECT suitable read chunks.
+   DO NOT ENABLE before the wait code in this source file is fixed.
+   That long, ./configure option --enable-track-src-odirect must not
+   get into effect in libburn. NO -DLibburn_read_o_direcT either.
+
+   For extra safety, O_DIRECT has been banned in libburn/sg-linux.c too.
+
+  # def ine Libburn_has_open_trac_srC 1
+*/
+
 #endif
 
 #include "cdrfifo.h"
diff -Naur libburn-1.5.2/cdrskin/cdrskin_eng.html libburn-1.5.2.pl01/cdrskin/cdrskin_eng.html
--- libburn-1.5.2/cdrskin/cdrskin_eng.html	2019-10-26 16:59:32.000000000 +0200
+++ libburn-1.5.2.pl01/cdrskin/cdrskin_eng.html	2019-11-25 19:44:07.000000000 +0100
@@ -67,7 +67,7 @@
 GPL software included:<BR>
 </H2>
 <DL>
-<DT>libburn-1.5.2</DT>
+<DT>libburn-1.5.2.pl01</DT>
 <DD>(founded by Derek Foreman and Ben Jansens,
 developed and maintained since August 2006 by
 Thomas Schmitt from team of libburnia-project.org)
@@ -202,13 +202,13 @@
 <P>
 <DL>
 <DT>Download as source code (see README):</DT>
-<DD><A HREF="cdrskin-1.5.2.tar.gz">cdrskin-1.5.2.tar.gz</A>
+<DD><A HREF="cdrskin-1.5.2.pl01.tar.gz">cdrskin-1.5.2.pl01.tar.gz</A>
 (1060 KB).
 </DD>
-<DD><A HREF="cdrskin-1.5.2.tar.gz.sig">cdrskin-1.5.2.tar.gz.sig</A></DD>
+<DD><A HREF="cdrskin-1.5.2.pl01.tar.gz.sig">cdrskin-1.5.2.pl01.tar.gz.sig</A></DD>
 <DD>
 (detached GPG signature for verification by
-<KBD>gpg --verify cdrskin-1.5.2.tar.gz.sig cdrskin-1.5.2.tar.gz</KBD>
+<KBD>gpg --verify cdrskin-1.5.2.pl01.tar.gz.sig cdrskin-1.5.2.pl01.tar.gz</KBD>
 <BR>
 after <KBD>gpg --keyserver keys.gnupg.net --recv-keys ABC0A854</KBD>).
 </DD>
@@ -280,9 +280,16 @@
 This caused Xfburn failures with some MATSHITA laptop drives.
 </LI>
 </UL>
+Bug fixes towards cdrskin-1.5.2 (without .pl01):
+<UL>
+<LI>
+cdrskin multi-track burning was slow and stalled after track 1.
+Regression introduced in version 1.5.0 by commit 84fad99, 2018.02.05
+</LI>
+</UL>
 <!--
 <LI>none</LI>
-Bug fixes towards cdrskin-1.4.2 (without .pl01):
+Bug fixes towards cdrskin-1.5.2 (without .pl01):
 <UL>
 </UL>
 -->
@@ -300,7 +307,7 @@
 </UL>
 </DD>
 
-<DD>Bug fixes towards cdrskin-1.5.2:
+<DD>Bug fixes towards cdrskin-1.5.2.pl01:
 <UL>
 <LI>none yet</LI>
 <!--
diff -Naur libburn-1.5.2/cdrskin/cdrskin_timestamp.h libburn-1.5.2.pl01/cdrskin/cdrskin_timestamp.h
--- libburn-1.5.2/cdrskin/cdrskin_timestamp.h	2019-10-26 16:57:47.000000000 +0200
+++ libburn-1.5.2.pl01/cdrskin/cdrskin_timestamp.h	2019-11-25 19:35:10.000000000 +0100
@@ -1 +1 @@
-#define Cdrskin_timestamP "2019.10.26.143001"
+#define Cdrskin_timestamP "2019.11.25.094931"
diff -Naur libburn-1.5.2/cdrskin/changelog.txt libburn-1.5.2.pl01/cdrskin/changelog.txt
--- libburn-1.5.2/cdrskin/changelog.txt	2019-10-26 17:09:41.000000000 +0200
+++ libburn-1.5.2.pl01/cdrskin/changelog.txt	2019-11-25 19:42:40.000000000 +0100
@@ -13945,6 +13945,19 @@
 * New cdrskin option --list_features
 
 
+2019.11.25.091234  [91f7d4d]
+configure.ac
+libburn/sg-linux.c
+cdrskin/cdrfifo.c
+Bug fix: cdrskin multi-track burning was slow and stalled after track 1.
+         Regression introduced in version 1.5.0 by commit 84fad99, 2018.02.05
+
+--------------------- bug fix release - cdrskin-1.5.2.pl01 - 2019.11.25.094931
+* Bug fix: cdrskin multi-track burning was slow and stalled after track 1.
+           Regression introduced in version 1.5.0 by commit 84fad99, 2018.02.05
+           O_DIRECT is now disabled for track sources.
+
+
   []
 ChangeLog
 cdrskin/cdrskin_eng.html
diff -Naur libburn-1.5.2/cdrskin/README libburn-1.5.2.pl01/cdrskin/README
--- libburn-1.5.2/cdrskin/README	2019-10-26 16:55:47.000000000 +0200
+++ libburn-1.5.2.pl01/cdrskin/README	2019-11-25 19:40:52.000000000 +0100
@@ -4,7 +4,7 @@
 cdrskin. By Thomas Schmitt <scdbackup@gmx.net>
 Integrated sub project of libburnia-project.org but also published via:
 http://scdbackup.sourceforge.net/cdrskin_eng.html
-http://scdbackup.sourceforge.net/cdrskin-1.5.2.tar.gz
+http://scdbackup.sourceforge.net/cdrskin-1.5.2.pl01.tar.gz
 
 Copyright (C) 2006-2019 Thomas Schmitt, provided under GPL version 2 or later.
 ------------------------------------------------------------------------------
@@ -26,9 +26,9 @@
 
                    Compilation, First Glimpse, Installation
 
-Obtain cdrskin-1.5.2.tar.gz, take it to a directory of your choice and do:
+Obtain cdrskin-1.5.2.pl01.tar.gz, take it to a directory of your choice and do:
 
-    tar xzf cdrskin-1.5.2.tar.gz
+    tar xzf cdrskin-1.5.2.pl01.tar.gz
     cd cdrskin-1.5.2
 
 Within that directory execute:
diff -Naur libburn-1.5.2/ChangeLog libburn-1.5.2.pl01/ChangeLog
--- libburn-1.5.2/ChangeLog	2019-10-26 17:03:00.000000000 +0200
+++ libburn-1.5.2.pl01/ChangeLog	2019-11-25 19:41:12.000000000 +0100
@@ -1,3 +1,9 @@
+libburn-1.5.2.pl01.tar.gz Mon Nov 25 2019
+===============================================================================
+* Bug fix: cdrskin multi-track burning was slow and stalled after track 1.
+           Regression introduced in version 1.5.0 by commit 84fad99, 2018.02.05
+           O_DIRECT is now disabled for track sources.
+
 libburn-1.5.2.tar.gz Sat Oct 26 2019
 ===============================================================================
 * Bug fix: No lock was obtained for setting up a fifo object
diff -Naur libburn-1.5.2/configure libburn-1.5.2.pl01/configure
--- libburn-1.5.2/configure	2019-10-26 17:21:16.000000000 +0200
+++ libburn-1.5.2.pl01/configure	2019-11-25 19:45:43.000000000 +0100
@@ -1444,7 +1444,7 @@
   --enable-fast-install[=PKGS]
                           optimize for fast installation [default=yes]
   --disable-libtool-lock  avoid locking (might break parallel builds)
-  --enable-track-src-odirect Enable use of O_DIRECT with track input, default=no
+  --enable-track-src-odirect   Banned for now: (Enable use of O_DIRECT with track input, default=no)
   --enable-dvd-obs-64k    64 KB default size for DVD writing, default=no
   --enable-dvd-obs-pad    pad DVD DAO sessions to 32 or 64 KB, default=no
   --enable-pkg-check-modules      Enable pkg-config check for libcdio , default=no
@@ -12310,8 +12310,9 @@
 fi
 
 if test x$enable_track_src_odirect = xyes; then
-    LIBBURN_O_DIRECT_DEF="-DLibburn_read_o_direcT"
-    echo "enabled  use of O_DIRECT with track input"
+#    LIBBURN_O_DIRECT_DEF="-DLibburn_read_o_direcT"
+#    echo "enabled  use of O_DIRECT with track input"
+    echo "REFUSED  to enable use of O_DIRECT with track input because of cdrskin multi-track bug"
 else
     LIBBURN_O_DIRECT_DEF=
     echo "disabled use of O_DIRECT with track input"
diff -Naur libburn-1.5.2/configure.ac libburn-1.5.2.pl01/configure.ac
--- libburn-1.5.2/configure.ac	2019-10-26 16:53:10.000000000 +0200
+++ libburn-1.5.2.pl01/configure.ac	2019-11-25 19:36:22.000000000 +0100
@@ -218,11 +218,12 @@
 
 dnl ts A91122
 AC_ARG_ENABLE(track-src-odirect,
-[  --enable-track-src-odirect Enable use of O_DIRECT with track input, default=no],
+[  --enable-track-src-odirect   Banned for now: (Enable use of O_DIRECT with track input, default=no)],
                , enable_track_src_odirect=no)
 if test x$enable_track_src_odirect = xyes; then
-    LIBBURN_O_DIRECT_DEF="-DLibburn_read_o_direcT"
-    echo "enabled  use of O_DIRECT with track input"
+#    LIBBURN_O_DIRECT_DEF="-DLibburn_read_o_direcT"
+#    echo "enabled  use of O_DIRECT with track input"
+    echo "REFUSED  to enable use of O_DIRECT with track input because of cdrskin multi-track bug"
 else
     LIBBURN_O_DIRECT_DEF=
     echo "disabled use of O_DIRECT with track input"
diff -Naur libburn-1.5.2/libburn/sg-linux.c libburn-1.5.2.pl01/libburn/sg-linux.c
--- libburn-1.5.2/libburn/sg-linux.c	2019-07-05 15:29:49.000000000 +0200
+++ libburn-1.5.2.pl01/libburn/sg-linux.c	2019-11-25 19:37:56.000000000 +0100
@@ -111,6 +111,15 @@
 
 /** PORTING : ------- OS dependent headers and definitions ------ */
 
+#ifdef Libburn_read_o_direcT
+/* ts B91124:
+   DISABLED, because this spoils multi-track burning of cdrskin by a hard to
+   fix bug in cdrskin/cdrfifo.c
+   DO NOT ENABLE before the wait code in that source file is fixed.
+*/
+#undef Libburn_read_o_direcT
+#endif
+
 
 #ifdef Libburn_read_o_direcT
 # ifndef _GNU_SOURCE
diff -Naur libburn-1.5.2/README libburn-1.5.2.pl01/README
--- libburn-1.5.2/README	2019-10-26 16:53:51.000000000 +0200
+++ libburn-1.5.2.pl01/README	2019-11-25 19:40:35.000000000 +0100
@@ -11,7 +11,7 @@
 and Ben Jansens <xor@orodu.net>
 Copyright (C) 2002-2006  Derek Foreman and Ben Jansens
 
-     http://files.libburnia-project.org/releases/libburn-1.5.2.tar.gz
+     http://files.libburnia-project.org/releases/libburn-1.5.2.pl01.tar.gz
 
 ------------------------------------------------------------------------------
 
@@ -19,9 +19,9 @@
 
                                 From tarball
 
-Obtain libburn-1.5.2.tar.gz, take it to a directory of your choice and do:
+Obtain libburn-1.5.2.pl01.tar.gz, take it to a directory of your choice and do:
 
-   tar xzf libburn-1.5.2.tar.gz
+   tar xzf libburn-1.5.2.pl01.tar.gz
    cd libburn-1.5.2
    ./configure --prefix=/usr
    make
@@ -791,6 +791,10 @@
   partitions and the ISO partition.
   All three libraries got some rarely triggered bugs fixed.
 
+- Mon Nov 25 2019 patch release 1.5.2.pl01
+  cdrskin did not properly burn multiple tracks. Track 1 was slow and burning
+  stalled before track 2. Regression introduced by 1.5.0.
+
 ------------------------------------------------------------------------------
 
     This program is free software; you can redistribute it and/or modify