[Solved] Plasma 5 crashes

Netrunner Rolling Rolling 2016.01
1

Hi all

I have been experiencing quite a lot of plasma 5 crashes lately.

I’m not sure but i think it had to do with an a update a while back as I don’t remember after migrating to plasma 5 having any crashes at the beginning, I think they started after one of the subsequent updates.

Is anyone experiencing anything similar?

It is nothing serious, I just get the “sorry plasma 5 crashed” message and the panel goes away for a couple of seconds and then comes back. I have no clue what causes it as it seems to be very random, open closing a tab in chrome, or just moving around the pointer, opening a window.

The only thing that is repeatable is that when I close/shutdown through the panel it will almost always crash, you get the crash message, but then goes ahead to shut down. Doesn’t happen when using

systemctl poweroff

though.

This happens to both my systems, a laptop and a desktop.

Today I had the one and only serious crash, which seemed to have killed the Xorg or something as it restarted the whole system.
Any ideas what could be causing this or how to troubleshoot it?
Cheers

Sorry, made a mistake in posting to the wrong forum, it should be in the 2014.09 rolling release.

2

Do you use the Intel driver ?

If yes this workaround seems to help as the new driver is buggy.

Create the file /etc/X11/xorg.conf.d/50-device.conf with root rights and add

Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "AccelMethod"  "uxa"
EndSection

After a reboot the crashes should be gone.

3

Thanks a lot for the suggestion.

Yes both systems have an intel GPU and and most likely have the intel driver, the desktop does and I will check my laptop when I get back home.

Did the change on by desktop now and will see if this helps after running it for a while.

Googling around about the frequent plasma 5 crashes, nothing I found pointed to intel drivers being buggy. Hopefully they will fix it soon enough.

Thanks a lot for the help.

Cheers

4

Here are some of the bug reports pertaining to the Intel driver stack being buggy:
https://bugs.freedesktop.org/show_bug.cgi?id=86281

This appears to have been resolved upstream acording to these two reports:,
https://bugs.kde.org/show_bug.cgi?id=349519
https://bugs.kde.org/show_bug.cgi?id=350340

It’s just a matter of waiting for it to make it downstream to us, for the time being the workaround suggested by leszek is the easiest solution.

5

So after working with both my systems for a while it seems this suggestion really fixed things.

No more random crashes out of the blue, great. The crash that occurs during shutdown though is still there, atleast on one of my systems.

Many thanks, cheers…

6

There is currently a fixed version of the intel-tbb libraries package in the testing branch for this issue.
This updated package will make into stable with the next update pack.