Ubuntu
hal package

  1. Bug #189814
  2. Comment #54

Comment 54 for bug 189814

Revision history for this message
Andrea Ratto (andrearatto) wrote : Re: HAL lockups or crashes dell laptops with a BIOS password

latitude d630 here. If I remember correctly there are some older latitudes as well: d620, d420.
btw did you try the command line dellLcdBrightness or the panel applet and got smooth operation?