voila. ça semble venir de la mise en hibernation ou du réveil (pas encore eu le temps de faire tests exhaustifs...)
la doc pour les flags me dit :
'G' if all modules loaded have a GPL or compatible license, 'P' if
any proprietary module has been loaded. Modules without a
MODULE_LICENSE or with a MODULE_LICENSE that is not recognised by
insmod as GPL compatible are assumed to be proprietary.
'F' if any module was force loaded by "insmod -f", ' ' if all
modules were loaded normally.
'W' if a warning has previously been issued by the kernel.
(Though some warnings may set more specific taint flags.)
'O' if an externally-built ("out-of-tree") module has been loaded.
