On Sat, May 08, 2004 at 01:11:58PM -0700, Vibol Hou wrote: > Just out of curiousity, I was reviewing the kernel proper for the code > that is executed as the system enters suspend and it appears to be > allocating a VT and switching to it to display debug messages. This > appears to be causing my screen to switch back on since I have a script > that shuts off my display when I initiate sleep mode (script found at: > http://ltswww.epfl.ch/~dsanta/resources/dell-i8500-linux). I modified > the script to work with 2.6. > > My question is; is it necessary for the kernel to do all this terminal > switching? I'm tempted to patch the kernel to remove the > allocation/switching/debug code but I'd like to know if this was done > for a reason (other than to output the debug messages). Terminal switching, yes, in most cases. Debug code, no, and I think it can be turned off by writing to the proper file in /proc or suspending with the proper flags. I don't recall which one and what, as it changed a few times. Maybe there's some documentation, or at least the kernel source. Regards, Luciano Rocha
