Ubuntu
acpid package

  1. Bug #285323
  2. Comment #131

Comment 131 for bug 285323

Revision history for this message
Wirawan Purwanto (wirawan0) wrote : Re: Losing keyboard and mouse control when changing screen brightness with fn + arrow under intrepid

System: Intrepid Ibex. See comment #126 for more hardware/software detail.

* Commenting suggestion from Jérémie Laval: https://bugs.launchpad.net/ubuntu/intrepid/+source/linux/+bug/285323/comments/51 -- I also found that this trick did not work for me (as Saïvann Carignan mentioned in comment #53)

* Confirming Endolith's 3rd observation in comment #56 above: hald-addon-dell-backlight is taking much CPU (~48%; or if I have firefox as the main window: X ~ 32%, hald-addon-dell-backlight ~ 14-18%, firefox ~10%).

* Confirming comment #91 by Daniel Knitt-Frank: When I got locked due to Fn+up/dn, then when I used Ctrl+Alt+F{n} (n = 1..6) for the first time (as the suggested for workaround), the X screen somehow pops back in before I even pressed Ctrl+Alt+F7. I had to press Ctrl+Alt+F{n} then Ctrl+Alt+F7 again to fully restore the functionality of keyboard (just to be safe). Weird.

Also related, probably: after the suspend and resume, sometimes the LCD brightness slider would not work anymore. But later on (don't remember whether I suspended again or not in between) it worked again. I may need to open a separate thread for this bug. But for now I just want to make a comment on that.

My DMI vendor string is also "Dell Computer Corporation", so I'm out of luck with the fix already in the kernel. When will somebody act upon this?

Wirawan