Mouse laggy with 3.4.0

nukem996 · l33t Joined: 13 Nov 2003 Posts: 776

I just upgraded to 3.4.0 and I've noticed my mouse is really laggy. If I leave it alone for about five seconds and then try to move it the cursor won't move for another second and when it does it jumps. As you can tell this is pretty annoying. Anyone else seeing this? Anyone have any clues?

nukem996 · l33t Joined: 13 Nov 2003 Posts: 776

I ran cat /dev/input/mouse0 and left my mouse alone for five seconds and then tried to move it. For the second nothing happens no data comes from /dev/input/mouse0. The mouse moves only when data starts coming through. This is definitely a kernel issue.

ppurka · Advocate Joined: 26 Dec 2004 Posts: 3256

Is it a usb mouse? If so, is the powermanagement turned on for that usb device?
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nukem996 · l33t Joined: 13 Nov 2003 Posts: 776

VoVaN · Posted: Wed May 23, 2012 1:15 pm Post subject:

After updating kernel to 3.4 I've noticed the same with keyboard (though my mouse works fine): after being idle for a few seconds first few symbols are always missing... I can't verify it right now, but I will do when I'll be at home. I've found this quite strange. Is there some power policy changes in 3.4?

depontius · Advocate Joined: 05 May 2004 Posts: 3509

I believe that there was a policy change, to enable all of this suspend stuff by default. I'd double-check either Phoronix or one of the "Wonderful World of..." articles for more on this.
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VoVaN · Posted: Wed May 23, 2012 4:57 pm Post subject:

Oke, just got home and have checked. In my case, as I expected, for some reason power level of keyboard was "auto" while for mouse was "on". Changing power level solved the problem, but still the question remains: "What has been changed and _why_?"