Since using kernel 3.19 (http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.19-vivid/), the problem is gone. Battery consumption down, general responsiveness up. Finally!
DELL E6510, Xubuntu 14.10 Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (i915) OpenGL version string: 2.1 Mesa 10.3.2 eDP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm linux-image-3.19.0-031900-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1354046 Title: no 3d acceleration with error [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1354046/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs