When changing specific kernel boot option in grub, you might want to keep this even after a kernel upgrade (which rebuild the grub configuration).
So you'll have to go to /boot/grub/menu.lst and find the kopt comment in this file :
# kopt=root=/dev/sda1 ro
This line specific what kernel options should be set by Debian when updating grub configuration.
Run update-alternatives :
# update-alternatives --config editors
When upgrading, you might like to revert back to a specified moment in time. Reverting upgrade seems stupid, but ISO Certification ask to have a defined process for that. So here we are :
Modify /etc/apt/sources.list and set (for 19 November 2007, here):
deb http://snapshot.debian.net/archive/2007/11/19/debian stable main non-free contrib deb http://snapshot.debian.net/archive/2007/11/19/debian-security stable/updates main non-free contrib
Then in /etc/apt/preferences :
Package: * Pin: release a=stable Pin-Priority: 1001
And finally you just need to apt-get update && apt-get dist-upgrade !
See http://lists.debian.org/debian-user-french/2007/12/msg00529.html
Xvfb is virtual X11 Server that works only in memory.
time:/# aptitude install xvfb xdm
Then edit /etc/X11/xdm/Xservers and change the line :
:0 local /usr/bin/X vt7 -dpi 100 -nolisten tcp
to
:0 local /usr/bin/Xvfb -dpi 100 -screen 1024x768x16
Finally start XDM :
/etc/init.d/xdm start
This will create a virtual X server at the size defined by screen option. Useful when forwarding via SSH !
To install Flash Player :
Go to http://http.us.debian.org/debian/pool/contrib/f/flashplugin-nonfree/, select the .deb corresponding to what you want and download :
time:/# wget http://http.us.debian.org/debian/pool/contrib/f/flashplugin-nonfree/flashplugin-nonfree_9.0.115.0.1_i386.deb
Then with dpkg, install :
time:/# dpkg -i flashplugin-nonfree_9.0.115.0.1_i386.deb
time:/# echo "0" > /proc/sys/kernel/printk
If you have moved files from a system using ISO-8859-1 encoding to UTF-8, you might have filename looking like Norme_int�gration.pdf.
There's a good tool : convmv.
#aptitude install convmv
Then just read the manual : http://www.j3e.de/linux/convmv/man/
On a HP DC7800p, I had problem with hibernation from Gnome menu (System → Shut Down … → Hibernate).
Indeed my computer rebooted instead of powering off, to correct this behavior I just created the file /etc/pm/config.d/shutdown with HIBERNATE_MODE=shutdown !
More info with man pm-hibernate.
I had problem with aptitude. When I did aptitude update, I got something like “Dynamic MMap ran out of room”. So here is the solution I used to correct : http://vdachev.net/blog/2006/11/13/apt-get-e-dynamic-mmap-ran-out-of-room/.
The value given may be not enough, I needed to enlarge this value to make it works.