gnome-shell very high cpu usage on a clean install F21
I've just installed fedora 21 and gnome-shell is constantly on 35-60% of my cpu (using a thinkpad T400 with a c2d P8600).
glxinfo | grep OpenG
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset
OpenGL version string: 2.1 Mesa 10.4.1
OpenGL shading language version string: 1.20
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 2.0 Mesa 10.4.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.0.16
OpenGL ES profile extensions
$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
What can I do? This takes my battery life from 6 hours on Debian to 2 hours on Fedora
I have the same problem. Laptop Dell E6400, however CPU usage is 21-23% constantly. I had it on fedora 20 and 21.
What Kernel version are you using? Have you tried installing the Intel graphics drivers ( https://01.org/linuxgraphics/ )? Also, have you looked into installing TLP and the Thinkpad TLP add-ins ( http://linrunner.de/en/tlp/tlp.html )? Just a thought.