Plasma started crashing

[accessys at smart.net]

I had a similar (not Plasma) type of problem with my Nvidia card and after 
a lot of head banging I did a card upgrade and solved the problem. still 
not sure what it was since it did not indicate there was any problem in 
the first place

YMMV
Bob



On Sat, 12 Nov 2016, Xen wrote:

> Date: Sat, 12 Nov 2016 19:05:30 +0100
> From: Xen <list at xenhideout.nl>
> Reply-To: Kubuntu user technical support <kubuntu-users at lists.ubuntu.com>
> To: kubuntu-users at lists.ubuntu.com
> Subject: Re: Plasma started crashing
> 
> accessys at smart.net schreef op 12-11-2016 18:50:
>> have you checked the nvidia site for updated drivers for your card???
>
> No I haven't and the tracelog indicates or seemed to indicate when I quickly 
> peroused it to be purely a thumbnail issue. I have disabled the thumbnails 
> after much ado (they are called tooltips) although I must say I do miss them 
> and I don't like it this way. But a similar thing seems to happen in the KDE 
> menu and it also causes the same kind of crash I think, it is just less now 
> than before.
>
> Not completely satisfactory at all because I find myself hovering over the 
> tiles to see the thumbnail so it was in fact useful to me. But there is a bug 
> in there that causes the crash -- I think -- and I submitted a bug about it.
>
> Here are some of the latest traces in the thread that crashed it.
>
> #6  _wordcopy_fwd_aligned (dstp=4512495800, srcp=55143296, len=20298888) at 
> wordcopy.c:101
> #7  0x00007fa9443e058f in __memmove_sse2 (dest=0x10cf738c0, src=<optimized 
> out>, len=162391104) at ../string/memmove.c:75
> #8  0x00007fa9275e74ad in ?? () from 
> /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
> #9  0x00007fa9275e5d95 in ?? () from 
> /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
> #10 0x00007fa92d573c1f in Plasma::WindowThumbnail::bindGLXTexture 
> (this=this at entry=0x35cac20) at 
> /build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/windowthumbnail.cpp:447
> #11 0x00007fa92d574e44 in Plasma::WindowThumbnail::windowToTextureGLX 
> (this=this at entry=0x35cac20, textureNode=textureNode at entry=0x3e8c620) at 
> /build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/windowthumbnail.cpp:282
> #12 0x00007fa92d575803 in Plasma::WindowThumbnail::windowToTexture 
> (this=0x35cac20, textureNode=0x3e8c620) at 
> /build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/windowthumbnail.cpp:394
>
> You can see the offending Plasma function is probably 
> Plasma::WindowThumbnail::bindGLXTexture and this is probably purely a plasma 
> framework problem but I can't tell.
>
> So now I don't have my thumbnails as they would crash it constantly and I 
> guess I have to thank Nils for pointing me to it or at least suggesting what 
> it might be, but I had to look at the trace to get a clue and I'm not really 
> happy with turning it off, I might just as well replace the card you know 
> (and do some real troubleshooting, for if the problem remains, then it is not 
> the card but it is going to be the software upgrades I had).
>
> Regards.
>
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