FreeBSD-head hang when shutdown by ACPI with Intel GPU and new Xorg and SandyBridge

[Lundberg, Johannes]

> As the KMS code does not switch the display mode back, once X with KMS
starts, you can't get a console back.

Is there any solution for this in the works?

Johannes Lundberg
BRILLIANTSERVICE CO., LTD. <http://www.brilliantservice.co.jp>


On Wed, May 22, 2013 at 5:44 AM, Kevin Oberman <rkoberman at gmail.com> wrote:

> On Tue, May 21, 2013 at 12:50 PM, Artyom Mirgorodskiy <
> artyom.mirgorodsky at gmail.com> wrote:
>
> > Hi
> > More than a month I can not shutdown FreeBSD on my laptop correctly when
> > running Xorg with Intel GPU. However reboot work correctly. Shutdown work
> > fine if I choose Vesa driver in xorg.conf. So I can run with intel, then
> > edit xorg.conf, kill Xorg server and shutdown correctly. If I shut down
> > immediately after loading Xorg - everything is fine too.
> > Without the text console is difficult to provide any information :( Why
> > would still not recover mode when kill Xorg?
> >
> > PS
> > I try to disable RC6 states -without any changes.
> > FreeBSD shutdown correctly before January.
> >
>
> I am seeing similar issues on my Sandybridge running Xorg with KMS, but I
> see it on 9-Stable.
>
> The main difference between shutdown and reboot is that shutdown goes
> through the rc.d files and issues a 'stop' for each. reboot simply kills
> running processes, first by sending SIGTERM and then sending SIGKILL to
> those that still live. So something is failing to die and that "something"
> is probably X. The system still responds to ICMP ECHOREQUEST (i.e. ping),
> but I can't fire up an ssh session.
>
> As the KMS code does not switch the display mode back, once X with KMS
> starts, you can't get a console back.
>
> Since the system is deadlocked in this state, I suspect something bad is
> happening in the KMS code that leaves the system hung.
>
> I may try to run a firewire console. Never tried it, but it should work.
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