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Graphics: Card: Intel 4 Series Integrated Graphics Controller
X.Org: 1.15.0 drivers: intel (unloaded: fbdev,vesa) Resolution: 1440x900@59.9hz
GLX Renderer: Mesa DRI Intel G41 GLX Version: 2.1 Mesa 10.2.0-devel
I performed an update today and upon rebooting lost all desktop effects and Kwin was crashing repeatedly upon trying to enable effects. In the end I reinstalled a backup of my system from a few days ago and all was working again.
I've narrowed the problem down to the new kernel as rebooting into the previous one (3.13.0-19-generic) works fine.
Looking at the changelog for 3.13.0-20, I see lots of references for Intel pointing to this bugfix https://bugs.launchpad.net/ubuntu/+s...x/+bug/1294144 I wonder if that has broken something on non Broadwell chips?