After upgrade to Ubuntu 20.04 most KDE native apps are now crashing and
this includes systemsettings5. segfault stacktrace points to crash in

> inxi -G
Graphics:  Device-1: Intel HD Graphics 530 driver: i915 v: kernel 
           Display: x11 server: X.Org 1.20.8 driver: intel resolution: 
           OpenGL: renderer: Mesa Intel HD Graphics 530 (SKL GT2) v: 4.6 Mesa 

xserver-xorg-video-intel version 2:2.99.917+git20200226-1

Setting MESA_LOADER_DRIVER_OVERRIDE=i965 does resolve this issue
completely, however I am wondering why this is not selected
automatically if iris driver does not support my GPU.

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  iris driver for old cpu

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Bug description:
  I am not completely sure where I should file the bug. I am using
  Lubuntu 20.04 with lxqt, and since the upgrade to 20.04 iris is the
  default graphics driver, which results in crashes in multiple apps
  including guvcview and calibre. Setting
  MESA_LOADER_DRIVER_OVERRIDE=i965 fixed the problem. I am not sure but
  is it true that iris does not support older generations of Intel CPUs?
  If it is the case would it be possible to revert to i965 in those
  circumstances? Thanks!

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