[BRLTTY] Braille displays lags after a kernel upgrade

[Dave Mielke]

[quoted lines by Lars Bjørndal on 2010/04/05 at 21:53 +0200]

>After a kernel upgrade, maybe from 2.6.31 to 2.6.32, my braille display,
>a Handy Tech Braille Star 40 on bluetooth, lags a bit. If I press a key
>on the display to scroll, it takes half a second before it reacts. I
>feel it's tied to some sleeping issues, because it doesn't happen
>always. I upgraded to yesterdays svn version of BRLTTY, and the same
>problem percists.
>
>I'm running Fedora 12 on a Lenovo Thinkpad X61S (32bit version). What
>could I do to solve this problem?

It may be coincidental, but I've noticed posts on the USB developers list which 
have the phrase "btusb autosuspend" in their subjects. I assume that btusb 
refers to Bluetooth USB donglesi, or, at least, some flavour of using Bluetooth 
via USB. Perhaps, therefore, you could try telling your system not to 
autosuspend your Bluetooth USB device (assuming that's what you have).

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Dave Mielke           | 2213 Fox Crescent | The Bible is the very Word of God.
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