Comment 26 for bug 47775

O.K. Thanks for the info.

I had a short look over it. I will try whatever I can, but I guess it will take
some time...

I'm not absolutely sure that I can come up with some results. Both methods seem
to have some hurdles that I might not overcome:

1.) errorF(): Necessary to understand the source code. I guess that's over my
capabilities. :(
But I will have a look at it (not even sure that I can sucessfully compile a
complete xserver. Might work with apt-src install easier though...). I guess I
need to find the code that gets executed when the modes are switched. uh, uh...

2.) GDB: A typical debugger it seems. However, if I am not mistaken, this
approach only works with crashed xservers, but not with a completely frozen
system. The relevant data is taken after the server gets a signal e.g. SIGSEGV.
But when the whole system is frozen, even a remote gdb session via ssh won't
work, will it?