[FE training-materials-updates] Warn about the tftp issue in 12.04 and beyond

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=19b82e4ebb4884d0d1c436a3e437c8f6b415f39f

>---------------------------------------------------------------

commit 19b82e4ebb4884d0d1c436a3e437c8f6b415f39f
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Tue Jan 22 16:11:18 2013 +0100

    Warn about the tftp issue in 12.04 and beyond
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


>---------------------------------------------------------------

19b82e4ebb4884d0d1c436a3e437c8f6b415f39f
 .../sysdev-bootloaders-u-boot.tex                  |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/slides/sysdev-bootloaders-u-boot/sysdev-bootloaders-u-boot.tex b/slides/sysdev-bootloaders-u-boot/sysdev-bootloaders-u-boot.tex
index 71abdb6..2b9907a 100644
--- a/slides/sysdev-bootloaders-u-boot/sysdev-bootloaders-u-boot.tex
+++ b/slides/sysdev-bootloaders-u-boot/sysdev-bootloaders-u-boot.tex
@@ -332,7 +332,7 @@ u-boot # saveenv
 \end{frame}
 
 \begin{frame}
-  \frametitle{TFTP}
+  \frametitle{TFTP (1)}
   \begin{itemize}
   \item Network transfer from the development workstation and U-Boot
     on the target takes place through TFTP
@@ -346,9 +346,17 @@ u-boot # saveenv
     \item \code{sudo apt-get install tftpd-hpa}
     \item All files in \code{/var/lib/tftpboot} are then visible
       through TFTP
-    \item A TFTP client is available in the \code{tftp-hpa} package,
-      for testing
+    \item {\bf Caution: known issue in Ubuntu 12.04 and later}\\
+	At every boot, you have to stop the server and start it again.
+	Otherwise, the server won't answer requests:\\
+	\code{/etc/init.d/tftpd-hpa restart} 
     \end{itemize}
+  \end{itemize}
+\end{frame}
+
+\begin{frame}
+  \frametitle{TFTP (2)}
+  \begin{itemize}
   \item A TFTP client is integrated into U-Boot
     \begin{itemize}
     \item Configure the \code{ipaddr} and \code{serverip} environment