I have successfully used 2.8.0-pre1 for quite a long time.
On Wed, 10 May 2017 18:16:48 +0000
Ralph Stirling <ralph.stirl...@wallawalla.edu> wrote:
> I have compiled 2.8.0-pre1 from source for a non-trivkins
> project. I am using a Mesa 7I43 board. When I run linuxcnc
> with software stepgens (no hostmot2), all is well. If I create
> a plain-vanilla Mesa-based stepper configuration with pncconf,
> the computer crashes during startup of linuxcnc and requires
> power cycling.
>
> Kernel: 3.4-9-rtai-686-pae
> Distro: Debian 7.11 (wheezy)
>
> If I do a "test axis" during pncconf, I get this error:
>
> Traceback (most recent call last):
> File "/home/engrtech/linuxcnc-dev/lib/python/pncconf/pages.py", line 1129,
> in
> on_zaxistune_clicked
> def on_zaxistune_clicked(self, *args): self.t.tune_axis('z')
> File "/home/engrtech/linuxcnc-dev/lib/python/pncconf/tests.py", line 463,
> in t
> une_axis
> if not self.a.check_for_rt():
> File "/home/engrtech/linuxcnc-dev/bin/pncconf", line 1640, in check_for_rt
> elif hal.is_rt and not hal.kernel_version == actual_kernel:
> AttributeError: 'module' object has no attribute 'kernel_version'
>
> When I actually run linuxcnc from the configuration made by pncconf,
> I get a kernel panic:
>
> BUG: unable to handle kernel NULL pointer dereference at 00000508
> IP: [<f91e6328>] handle_lxrt_request+0x58/0xaf0 [rtai_sched]
> *pde = 00000000
> Oops: 0000 [#1] PREEMPT SMP
>
> followed by more stack trace stuff.
>
> Linux 2.7.8 with hostmot2 runs fine, as does 2.8.0-pre1 with software stepgen.
> Is this a problem of my making (and hence my solving), or is it a bug? I'm
> wondering why I see mention of PREEMPT in the kernel panic when I am
> running an RTAI kernel. Do I need to compile 2.8.0-pre1 differently?
>
> Thanks,
> -- Ralph
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--
Nicklas Karlsson <nicklas.karlsso...@gmail.com>
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