</para>
<para>Among the software that has been found to cause difficulties are:</para>
<para><itemizedlist>
-<listitem><para>Sonic Solutions burning software containing DLA component (when DLA disabled)</para></listitem>
-<listitem><para>Norton/McAfee/Symantec antivirus or antispyware</para></listitem>
-<listitem><para>Logitech webcam software with "Logitech process monitor" service</para></listitem>
-<listitem><para>Kerio, Agnitum or ZoneAlarm Personal Firewall</para></listitem>
-<listitem><para>Iolo System Mechanic/AntiVirus/Firewall</para></listitem>
-<listitem><para>LanDesk</para></listitem>
-<listitem><para>Windows Defender </para></listitem>
-<listitem><para>Various programs by Wave Systems Corp using wxvault.dll, including Embassy Trust Suite and Embassy Security Center</para></listitem>
-<listitem><para>NOD32 Antivirus</para></listitem>
-<listitem><para>ByteMobile laptop optimization client</para></listitem>
-<listitem><para>Earthlink Total-Access</para></listitem>
-<listitem><para>Spybot S&D TeaTimer</para></listitem>
<listitem><para>AR Soft RAM Disk</para></listitem>
<listitem><para>ATI Catalyst (some versions)</para></listitem>
-<listitem><para>NVIDIA GeForce (some versions)</para></listitem>
-<listitem><para>Windows LiveOneCare</para></listitem>
-<listitem><para>Webroot Spy Sweeper with Antivirus</para></listitem>
-<listitem><para>COMODO Firewall Pro</para></listitem>
-<listitem><para>PC Tools Spyware Doctor</para></listitem>
+<listitem><para>AVAST (disable FILESYSTEM and BEHAVIOR realtime shields)</para></listitem>
<listitem><para>Avira AntiVir</para></listitem>
-<listitem><para>Panda Internet Security</para></listitem>
<listitem><para>BitDefender</para></listitem>
-<listitem><para>Google Desktop</para></listitem>
-<listitem><para>Sophos Anti-Virus 7</para></listitem>
<listitem><para>Bufferzone from Trustware</para></listitem>
-<listitem><para>Lenovo IPS Core Service (ipssvc)</para></listitem>
-<listitem><para>Lenovo RapidBoot Shield</para></listitem>
-<listitem><para>Credant Guardian Shield</para></listitem>
-<listitem><para>AVAST (disable FILESYSTEM and BEHAVIOR realtime shields)</para></listitem>
+<listitem><para>ByteMobile laptop optimization client</para></listitem>
+<listitem><para>COMODO Firewall Pro</para></listitem>
<listitem><para>Citrix Metaframe Presentation Server/XenApp (see <ulink url="http://support.citrix.com/article/CTX107825">Citrix Support page</ulink>)</para></listitem>
-<listitem><para>Lavasoft Web Companion</para></listitem>
+<listitem><para>Credant Guardian Shield</para></listitem>
+<listitem><para>Earthlink Total-Access</para></listitem>
<listitem><para>Forefront TMG</para></listitem>
+<listitem><para>Google Desktop</para></listitem>
+<listitem><para>Iolo System Mechanic/AntiVirus/Firewall</para></listitem>
+<listitem><para>Kerio, Agnitum or ZoneAlarm Personal Firewall</para></listitem>
+<listitem><para>LanDesk</para></listitem>
+<listitem><para>Lavasoft Web Companion</para></listitem>
+<listitem><para>Lenovo IPS Core Service (ipssvc)</para></listitem>
+<listitem><para>Lenovo RapidBoot Shield</para></listitem>
+<listitem><para>Logitech webcam software with "Logitech process monitor" service</para></listitem>
<listitem><para>MacType</para></listitem>
+<listitem><para>NOD32 Antivirus</para></listitem>
+<listitem><para>NVIDIA GeForce (some versions)</para></listitem>
+<listitem><para>Norton/McAfee/Symantec antivirus or antispyware</para></listitem>
+<listitem><para>PC Tools Spyware Doctor</para></listitem>
+<listitem><para>Panda Internet Security</para></listitem>
+<listitem><para>Sonic Solutions burning software containing DLA component (when DLA disabled)</para></listitem>
+<listitem><para>Sophos Anti-Virus 7</para></listitem>
+<listitem><para>Spybot S&D TeaTimer</para></listitem>
+<listitem><para>Various programs by Wave Systems Corp using wxvault.dll, including Embassy Trust Suite and Embassy Security Center</para></listitem>
+<listitem><para>Webroot Spy Sweeper with Antivirus</para></listitem>
+<listitem><para>Windows Defender </para></listitem>
+<listitem><para>Windows LiveOneCare</para></listitem>
</itemizedlist></para>
<para>Sometimes these problems can be worked around, by temporarily or partially
disabling the offending software. For instance, it may be possible to disable
<listitem>Ensure that you have eliminated (not just disabled) all
software on the <xref linkend="faq.using.bloda"/>.
</listitem>
- <listitem>Read the 'rebase' package README in
- <literal>/usr/share/doc/rebase/</literal>, and follow the
- instructions there to run 'rebaseall'.</listitem>
<listitem>Switch from 32-bit Cygwin to 64-bit Cygwin, if your OS and CPU support that.
With the bigger address space <literal>fork()</literal> is less likely to fail.</listitem>
+ <listitem>
+ <para>
+ Try setting the environment variable CYGWIN to "detect_bloda", which
+ enables some extra debugging, which may indicate what other software is
+ causing the problem.
+ </para>
+ <para>
+ See <ulink url="https://cygwin.com/ml/cygwin/2012-02/msg00797.html">this
+ mail</ulink> for more information.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Force a full rebase: Run <command>rebase-trigger fullrebase</command>,
+ exit all Cygwin programs and run Cygwin setup.
+ </para>
+ <para>
+ By default, Cygwin's setup program automatically performs an incremental
+ rebase of newly installed files. Forcing a full rebase causes the
+ rebase map to be cleared before doing the rebase.
+ </para>
+ <para>
+ See <literal>/usr/share/doc/rebase/README</literal> and
+ <literal>/usr/share/doc/Cygwin/_autorebase.README</literal> for more
+ details.
+ </para>
+ <para>Please note that installing new packages or updating existing
+ ones undoes the effects of rebase and often causes fork() failures to
+ reappear.
+ </para>
+ </listitem>
</itemizedlist></para>
- <para>Please note that installing new packages or updating existing
- ones undoes the effects of rebaseall and often causes fork() failures
- to reappear. If so, just run rebaseall again.
- </para>
<para>See the <ulink url="https://cygwin.com/cygwin-ug-net/highlights.html#ov-hi-process">
process creation</ulink> section of the User's Guide for the technical reasons it is so
difficult to make <literal>fork()</literal> work reliably.</para>