On Fri, 20 Jun 2014, Adam Williamson wrote:
> On Fri, 2014-06-20 at 14:32 -0400, Robert P. J. Day wrote:
>
> > if, however, i simply unplug the external monitor from HDMI, no
> > problem, and i can plug in the monitor after booting. oh, and as
> > before, once i'm running under this new (but clearly broken) kernel,
> > when i go to shut down, massive kernel panic and stack trace.
> >
> > i can do more testing tomorrow, but this has now been an issue for
> > the last three rawhide kernel releases. is no one else seeing
> > something like this? more later ...
>
> Issues like this are very hardware specific; it'd be very unusual
> for there to be a bug which affected *any* system with an HDMI
> display, because the code for dealing with HDMI displays attached to
> NVIDIA adapters is entirely different from the code for dealing with
> HDMI displays attached to Intel adapters or AMD adapters.
... snip ...
i'll see what kind of debugging i can do this weekend based on the
rest of your note, but here's one more brief data point related to my
current 3.16.0-0.rc1.git3.1.fc21.x86_64 kernel.
if i boot without HDMI connected to external monitor, it works. i
can then plug in external monitor but when i reboot, the shutdown
dumps a kernel stack trace.
*however*, if i boot successfully without an external monitor, and
subsequently never plug one in, then i can reboot just fine. so the
problem rears its ugly head either:
1) booting with HDMI-connected monitor, or
2) shutting down after having, at some point, connected a monitor via
HDMI to the running system.
in short, there's something about HDMI that's screwed, apparently
related to this nouveau driver. more later as i debug further.
rday
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Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca
Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
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