Ubuntu

Keyboard and mouse laggy on system startup

Asked by Ian Monroe

Using KDE4 and Kubuntu Intrepid. Despite the system load being like 0.3, and the swap is never touched. However the keyboard is really laggy, including skipping entered letters entirely. Similarly the cursor movement is erratic and laggy.

Watching htop, no application in particular seems to take a lot of CPU.

Its a fairly standard system. It does have intrepid-backports, with all updates. It has 1.5 gigs of ram, and is a Dell Inspiron E1505 with two cores 1.6ghz (anyways, it should be able to handle typing and mouse moving!).

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Ian Monroe
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marcobra (Marco Braida) (marcobra) said : 		#1

How is your mouse and your keyboard plugged (usb, ps2, serial ) ...?
Can you try booting your pc from an Ubuntu live cd and see if have same issue...?

Thank you

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marcobra (Marco Braida) (marcobra) said : 		#2

Do you have this issue only at system startup and then your mouse nad keyboard works fine...?

Thank you

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Ian Monroe (launchpad-monroe) said : 		#3

Its a laptop, so its a track pad and the built-in keyboard.

The problem sticks around, I was just pointing out that the problem occurs immediately at startup. At first I thought it was probably Firefox being Firefox, but then I rebooted and the problem continued.

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marcobra (Marco Braida) (marcobra) said : 		#4

Can you provide something more about your laptop brand and model, we can help you and if we have some more infos i and other can help you better, might be someone with same hardware get you right answer.

Thank you

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marcobra (Marco Braida) (marcobra) said : 		#5

Very sorry i ready there is in the main question...
Thank you

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Ian Monroe (launchpad-monroe) said : 		#6

That's OK. :)

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Ian Monroe (launchpad-monroe) said : 		#7

Regarding Live CD: that's a good idea. I'm going to go try icewm now to rule out KDE.

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Ian Monroe (launchpad-monroe) said : 		#8

So I booted up in Windows and it had the exact same problem. So obviously it was a hardware problem which made me think about something that did change recently: the battery went caput. I took it out but then my girlfriend had put it back in since it made it wobbly (horrible Dell engineering that it needs the battery to stand up straight!). Taking it back out again fixed the issue.

Thanks for your help,
Ian