Comment 3 for bug 292840
Revision history for this message
| Marc Carter (drekbour) wrote Re: brightness keeps getting decreased while non-idle | #3 |
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f33e652
(Get the code!)
This affects me too (8.10, thinkpad x60) and has been a pain for a long time now (certainly was present in Hardy, can't remember back to Gutsy). Experimentation shows two distinct problems.
a) "on battery power" -> "reduce backlight brightness" When selected this sets the normal brightness to 50% but doesn't actually stop the user from pumping it back to 100%. Occasionally I presume the power management daemon notices (to force this close and reopen the power console) and sets it back in a most frustrating way. If (and I think we should) we allow users to boost the brightness above the cap then this reset should be done during a video power event (screen off, idle etc) and not simply enforced every time something is randomly polled.
ref #136693 for related fixes done in the area of auto/manual brightness that may not have been fully thought through.
b) "idle detection" clearly isn't working (as described by the OP). Right now (on AC and clearly not idle) I can choose "dim display when idle" and it _immediately_ sets the display to 25%. Again, I can boost the brightness but it will "notice" and reset it.