Ubuntu

Laptop Keyboard misses keys from time to time

Asked by Jacob Litewski

Ok, I have a minor problem. I cannot type quickly, or Xubuntu will start missing keys.
Example:
the brown fx jumpsover the blue mon

It affects every key. Using the keyboard on the Live CD is fine, but using it wthin the OS isn't so nice.
I tried editing the /ect/X11/xorg.conf for the touchpad with no luck (though the mouse doesn't move when I type anymore). I did see some entries for the Keyboard, but I'm not sure if they would help, and if it did, I'm not sure what commands to use.

Laptop Specs:
Dell Inspiron 1000
Moble Intel Celeron 2.20GHz
Running Xubuntu 7.10 (Gusty)

Thanks in advance!

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Jacob Litewski
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Keller Giacomarro (keller-g) said : 		#1

What about if you hookup an external USB keyboard? Does the issue persist then?

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Jacob Litewski (j.litewski) said : 		#2

Im not sure. All the keyboards I have are PS/2 Keyboards, and the laptop doesn't have PS/2 ports.
I'm thinking it's the refresh rate of the keyboard, if that's how it works. And i wish i did have a USB keyboard it would of been easier on you guys.

I'll see if my BIOS has any USB settings. I rea in another post where the keyboard would ddddddddddddoooooooooo TTtthhhhhhhiiiiiiiisssssssss because of something to do with the USB settings, and this kinda sounds like the oppisite.

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Ralph Janke (txwikinger) said : 		#3

You may want to look in the accessibility features. It might have the key detection speed set to low. This is a accessibility feature to help to prevent double letters for people that are very slow on the computer. For normal speed typing this will loose keystrokes or in an extreme case appear the keyboard being non functioning.

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Jacob Litewski (j.litewski) said : 		#4

no dice. I messed with all the settings in the keyboard preferences and nothing worked. Now, I think i did this wrong. I'm also a Linux noob, so I did kinda get lost.

I also looked into my BIOS for USB settings. again, no dice.

Also, I noticed my indicator lamps (the HDD, Caps, Scroll, and Number Lock) sometimes all light up for a second. I don't know if they are related or not. More info doesn't hurt.

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Ralph Janke (txwikinger) said : 		#5

Do you look at the settings for sticky keys and slow keys?

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Jacob Litewski (j.litewski) said : 		#6

yes i did. no dice. It would do good for a while, but then start missing keys, like two or three at a time. Sticky and Slow keys are off. DeBounce is also off. I'm using 'X' Configuration also.

I also looked at the keyboard drivers that are in place already. I'm going to test them out to see if i can't find one closely to the Dell Inspiron 1000 that i have.

If i can't do said thing above this, will that mean that a custom driver is going to be made for the Dell Inspiron 1xxx?

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Jacob Litewski (j.litewski) said : 		#7

Well, it's fixed. I upgraded to Xubuntu 8.4a3 and the problem went away. So I'm guessing it was the configuration of Xubuntu 7.10 that screwed my Keyboard up.

Thanks for all of your help!

Solved.

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glenstewart (glen-stewart) said : 		#8

I am running Kubuntu 9.04 and am experiencing the same problem. But it's on repeated keys like "look" or "peep" where I quickly type the same key twice.

I've inspected my Accesibility setings and the repeat inhibitor is not set. Notice the missing characters?

I am using a wired USB Logitech Internet Navigator keyboard.

If I hook up a PS/2 keyboard and type "accessibility settings" just as fast, it works.

Is there a place where the USB interrupt or polling settings can be adjusted?

Thanks!