Graphics and mouse pointer LAG still unresolved!

[Wim]

Originally Posted by Pazuzu

Energy settings can be set differently whether on battery power or plugged in. The lid ACPI doesn't have anything to do with performance.

But just to try it out I set the CPU performance to the lowest when plugged in, and yes some hardly noticeable lag could be detected if I looked closely... but nothing in the vicinity off this behavior.

Underlining a link or changing the color of a little button on a website shouldn't make everything lag. And the keyboard buffer lags. And NIC traffic kills everything.

At the same time some graphic changes doesn't create any lag, as I show in the video. And for example internet explorer works better (because it uses the GPU more?!) These are all just hints, but something really strange and buggy is going on. Maybe you should get a lenovo yoga 13" and try it out? I can try to find another laptop with USB 3 in the office and test the dock with it.

Our driver has no change of behaviour when the lid is closed, so it is definitely something changing the in system to provide less CPU or system resources.

I've done a google about this and found this thread, which states that the yoga will throttle the CPU when in tablet mode. I wonder if closing the lid is triggering tablet mode.

This post suggests how to turn it off:

• Turn off Intel Dynamic Dynamic Platform in BIOS
• Disable or uninstall Lenovo Transition
• Disable yogaserver.exe through taskmgr
• Keep Lenovo Energy Management installed.

The above setup makes it possible for me to get full speed in tablet mode, and thanks to Energy Management the CPU can still downclock correctly.

Can you try this and see if it solves the issue?

Wim