Re: [Linux-fbdev-devel] Some questions

[Michel <mi...@da...>]

On Die, 2003-03-11 at 23:51, Antonino Daplas wrote:
> On Wed, 2003-03-12 at 06:23, Thomas Winischhofer wrote:
> > > 
> > > I actually prefer #3, and I already have working code for this.  We can
> > > also make this driver switchable (ie, drivers that are not affected by X
> > > can disable this, and only drivers that are affected such as the riva,
> > > aty, radeon, etc can turn this on).
> > 
> > What exactly is a "trusted" console?
> 
> By default, the pid of each vt is -1.  When X loads, it installs its own
> VT (ie vt7), which in that case the pid of that particular vt == X's
> pid.  We can check this pid, and if switching from a vt with pid == -1,
> we can safely assume that the hardware state is still sane, and if not,
> assume the hardware state is undefined.

Can you also detect when the app has opened the framebuffer device, and
assume it's playing nice when it has? (for Option "UseFBDev")


-- 
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast