[arch-general] plasma 5 crashing

[Mike Cloaked]

On Tue, Dec 29, 2015 at 1:17 PM, Genes Lists <lists at sapience.com> wrote:

> Fully updated from testing repo.
>
> Since update to plasma 5.5 I am getting periodic crashes of plasmashell
> -trace back below.  Seems to be connected with dri/swrast_dri.so.
>
> i915 graphics so not sure why swrast_dri is called - but then again not
> sure what that does exactly (sounds like software rendering).
>
> Anyone got suggestions or seen similar.
>
> plasma restarts itself and things go normally for a while until the next
> crash.
>
> gene
>
>
> --- trace back
>
> Application: Plasma (plasmashell), signal: Segmentation fault
> Using host libthread_db library "/usr/lib/libthread_db.so.1".
> [Current thread is 1 (Thread 0x7f7c26ff0800 (LWP 2502))]
>
> ...
>
> Thread 1 (Thread 0x7f7c26ff0800 (LWP 2502)):
> [KCrash Handler]
> #5  0x00007f7c34c52b22 in __memmove_avx_unaligned () from
> /usr/lib/libc.so.6
> #6  0x00007f7c1763dc8d in ?? () from
> /usr/lib/xorg/modules/dri/swrast_dri.so
> #7  0x00007f7c1763c645 in ?? () from
> /usr/lib/xorg/modules/dri/swrast_dri.so
> #8  0x00007f7c1db1e8fa in ?? () from
> /usr/lib/qt/qml/org/kde/plasma/core/libcorebindingsplugin.so
> #9  0x00007f7c1db1f3f9 in ?? () from
> /usr/lib/qt/qml/org/kde/plasma/core/libcorebindingsplugin.so
> #10 0x00007f7c1db1f954 in ?? () from
> /usr/lib/qt/qml/org/kde/plasma/core/libcorebindingsplugin.so
> #11 0x00007f7c38652ac0 in
> QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () from
> /usr/lib/libQt5Quick.so.5
> #12 0x00007f7c3865331b in QQuickWindowPrivate::updateDirtyNodes() () from
> /usr/lib/libQt5Quick.so.5
> #13 0x00007f7c38653490 in QQuickWindowPrivate::syncSceneGraph() () from
> /usr/lib/libQt5Quick.so.5
> #14 0x00007f7c3862219c in ?? () from /usr/lib/libQt5Quick.so.5
>
> ...
>

For anyone having this kind of problem some additional useful info might be
obtained by running the suggested commands in
the page at http://dri.freedesktop.org/wiki/glxinfo/ - and getting at some
3d rendering info specifically when the system has a problem indicated by
the fact that the rendering is falling back to the swrast_dri driver. Any
chance this report relates to failed graphics drivers which may originate
in bugs in the mesa/plasma/X etc code - but at least some initial info
showing where there is a problem may point to where to look for more
problems so narrow down where the initial failure occurs?
-- 
mike c