We just got new Lenovo Thinkpad T460s laptops at work.
Processor: 4x Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz,
Graphics: Intel HD Graphics 520
Memory: 8055MB DDR4
Harddisk: 256 GB SSD (Samsung)
I installed Ubuntu 15.10.
alongside Windows 7
. So far everything works; apart from the docking station, but that's another story. (I
am not sure whether it is relevant, however, a second screen is connected
to the laptop via hdmi-to-dvi.)
However, it seems like the system does not use its full potential. The
windows under Ubuntu do not move smoothly. Furthermore, it feels like every action has a certain latency (it's not much, but enough to
notice). I installed the gnome-session-flashback
package. However,
both under compiz
and metacity
I got the same problems. I even tried
to remove all relevant effects using the Compiz config settings manager
as well as the Unity tweak tool
. Still the same problems.
I am not sure what to look for.
So first thing we did was to get a glmark2
benchmark score. It is only 79 (the whole output can be found here).
This seems to be quite low (see here for comparison; furthermore a five
year old T410 -- without a dedicated GPU and a i7-M620 @ 2.6GHz CPU --
got a score of 146). It seems that something with the graphic
acceleration does not work right.
The glxinfo
dump can be found here.
Edit:
I did not mention that I run glmark2
under metacity
because I thought it shouldn't make any difference. However, it does! glmark2
under unity
gives a score of 1009. However, the windows still do not move as smoothly under unity
as they could (in my opinion).
Is there any idea what to do or where to look next? Any help would be greatly appreciated.
Do not hesitate to ask if you need more information from me.
Summary:
- Ubuntu 15.10 GUI does not run smoothly on a high performance laptop
- Very low glmark2 score: 79 (at least under
metacity
)
Ps.: I just ran the Win 7 internal performance benchmark and got an overall score of 6.7 (max score you can get is 7.9). However, I also find that the windows are somehow lagging when moved around. I wonder whether this is either a general problem of T460s laptops or my exaggerated expectations.