Plasma screen flickering on lower resolutions after upgrade to Kubuntu 15.10
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
plasma-desktop (Ubuntu) |
Incomplete
|
Undecided
|
Unassigned |
Bug Description
On my laptop, Dell m3800, the default resolution 3200x1800 makes everything unreadable, so I need to keep the resolution lower, i.e., 1920x1080. Everything worked fine in Kubuntu 15.04. After the upgrade to Kubuntu 15.10, if I turn the resolution to 1920x1080 (or any lower resolution than the default one), the screen starts to flickering often (with the default resolution 3200x1800 this does not happen).
I tried to turn off compositing, using Xrender, etc. nothing seems to work.
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile
OpenGL version string: 3.0 Mesa 11.0.2
OpenGL shading language version string: 1.30
Driver: Intel
GPU class: Haswell
OpenGL version: 3.0
GLSL version: 1.30
Mesa version: 11.0.2
X server version: 1.17.2
Linux kernel version: 4.2
Requires strict binding: yes
GLSL shaders: yes
Texture NPOT support: yes
Virtual Machine: no
Some additional information: it might be a kernel issue (see my comment on the other bug: https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1509556/ comments/ 44)