[bootlin/training-materials updates] master: labs: updates for Ubuntu 20.04 (5ee73468)

[Michael Opdenacker]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/5ee73468dcf313290b50da9accbff9293aa6c195

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

commit 5ee73468dcf313290b50da9accbff9293aa6c195
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Mon Feb 1 11:22:36 2021 +0100

    labs: updates for Ubuntu 20.04
    
    - No longer need to completely reboot after "newgrp dialout"
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


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

5ee73468dcf313290b50da9accbff9293aa6c195
 labs/boot-time-board-setup/boot-time-board-setup.tex     | 7 +++----
 labs/kernel-board-setup/kernel-board-setup.tex           | 7 +++----
 labs/sysdev-u-boot-stm32/sysdev-u-boot-stm32.tex         | 7 +++----
 labs/yocto-first-build-stm32/yocto-first-build-stm32.tex | 7 +++----
 4 files changed, 12 insertions(+), 16 deletions(-)

diff --git a/labs/boot-time-board-setup/boot-time-board-setup.tex b/labs/boot-time-board-setup/boot-time-board-setup.tex
index d62758d8..378d7864 100644
--- a/labs/boot-time-board-setup/boot-time-board-setup.tex
+++ b/labs/boot-time-board-setup/boot-time-board-setup.tex
@@ -75,10 +75,9 @@ to the \code{dialout} group:
 sudo adduser $USER dialout
 \end{verbatim}
 
-{\bf Important}: for the group change to be effective, in Ubuntu 18.04, you have to
-{\em completely reboot} the system \footnote{As explained on
-\url{https://askubuntu.com/questions/1045993/after-adding-a-group-logoutlogin-is-not-enough-in-18-04/}.}.
-A workaround is to run \code{newgrp dialout}, but it is not global.
+{\bf Important}: for the group change to be effective, you have to
+{\em completely log out} from your session and log in again (no need to
+reboot). A workaround is to run \code{newgrp dialout}, but it is not global.
 You have to run it in each terminal.
 
 Now, you can run \code{picocom -b 115200 /dev/ttyUSB0}, to start serial
diff --git a/labs/kernel-board-setup/kernel-board-setup.tex b/labs/kernel-board-setup/kernel-board-setup.tex
index 4455c5a0..e5ee2e1f 100644
--- a/labs/kernel-board-setup/kernel-board-setup.tex
+++ b/labs/kernel-board-setup/kernel-board-setup.tex
@@ -86,10 +86,9 @@ to the \code{dialout} group:
 sudo adduser $USER dialout
 \end{verbatim}
 
-{\bf Important}: for the group change to be effective, in Ubuntu 18.04, you have to
-{\em completely reboot} the system \footnote{As explained on
-\url{https://askubuntu.com/questions/1045993/after-adding-a-group-logoutlogin-is-not-enough-in-18-04/}.}.
-A workaround is to run \code{newgrp dialout}, but it is not global.
+{\bf Important}: for the group change to be effective, you have to
+{\em completely log out} from your session and log in again (no need to
+reboot). A workaround is to run \code{newgrp dialout}, but it is not global.
 You have to run it in each terminal.
 
 Now, you can run \code{picocom -b 115200 /dev/ttyUSB0}, to start serial
diff --git a/labs/sysdev-u-boot-stm32/sysdev-u-boot-stm32.tex b/labs/sysdev-u-boot-stm32/sysdev-u-boot-stm32.tex
index 87f86d5b..cbe49d55 100644
--- a/labs/sysdev-u-boot-stm32/sysdev-u-boot-stm32.tex
+++ b/labs/sysdev-u-boot-stm32/sysdev-u-boot-stm32.tex
@@ -54,10 +54,9 @@ allowed to write to the serial console:
 sudo adduser $USER dialout
 \end{verbatim}
 
-{\bf Important}: for the group change to be effective, in Ubuntu 18.04+, you have to
-{\em completely reboot} the system \footnote{As explained on
-\url{https://askubuntu.com/questions/1045993/after-adding-a-group-logoutlogin-is-not-enough-in-18-04/}.}.
-A workaround is to run \code{newgrp dialout}, but it is not global.
+{\bf Important}: for the group change to be effective, you have to
+{\em completely log out} from your session and log in again (no need to
+reboot). A workaround is to run \code{newgrp dialout}, but it is not global.
 You have to run it in each terminal.
 
 Run \code{picocom -b 115200 /dev/ttyACM0}, to start serial
diff --git a/labs/yocto-first-build-stm32/yocto-first-build-stm32.tex b/labs/yocto-first-build-stm32/yocto-first-build-stm32.tex
index 56a68426..64f80787 100644
--- a/labs/yocto-first-build-stm32/yocto-first-build-stm32.tex
+++ b/labs/yocto-first-build-stm32/yocto-first-build-stm32.tex
@@ -115,10 +115,9 @@ allowed to write to the serial console:
 sudo adduser $USER dialout
 \end{verbatim}
 
-{\bf Important}: for the group change to be effective, in Ubuntu 18.04, you have to
-{\em completely reboot} the system \footnote{As explained on
-\url{https://askubuntu.com/questions/1045993/after-adding-a-group-logoutlogin-is-not-enough-in-18-04/}.}.
-A workaround is to run \code{newgrp dialout}, but it is not global.
+{\bf Important}: for the group change to be effective, you have to
+{\em completely log out} from your session and log in again (no need to
+reboot). A workaround is to run \code{newgrp dialout}, but it is not global.
 You have to run it in each terminal.
 
 Run \code{picocom -b 115200 /dev/ttyACM0}, to start serial