Hello,
I updated my kernel yesterday.
Today by starting, the amd driver is not running anymore. I checked that the linux kernel headers ha snot been updated.
By the first installation of the amd driver, I could not run it until this module were installed.
Could it be the reason of non functioning of the graphic driver ?
Thank You in advance
Jerome
How did You install the ATI drivers? The easy way or the hard way? If you install the drivers the hard way then you always need to remember of recompiling them with every kernel change/update.
Hello,
Hard way 
Ok, I know what to do now.
Many thanks for Your support
Jerome