On Sun, 08 September 2013 Daniel Vetter <daniel at ffwll.ch> wrote: > On Sun, Sep 8, 2013 at 2:10 PM, Markus Trippelsdorf > <markus at trippelsdorf.de> wrote: > > kexec calls: > > printk(KERN_EMERG "Starting new kernel\n"); > > late before calling machine_shutdown(). > > However at this point the underlying fb device may have already been > > shutdown. This causes the kernel to hang. > > Fix by simply getting rid of the printk call. > > > > Signed-off-by: Markus Trippelsdorf <markus at trippelsdorf.de> > > Shouldn't this be taken care of with the suspend/resume_console calls? > At least that's my understanding how it works in the suspend/hibernate > code, maybe kexec needs similar treatment ... Is it suspend/resume_console? Shouldn't the fbcon be short-circuited or disabled once there is no more underlying fb? Serial console, if present, as well as netconsole if network device is still alive should continue working I would say. Bruno > -Daniel
