gnome-power-manager-2.20.0-6.fc8 kernel-2.6.23.9-85.fc8 Several issues here. Pressing BrightnessDown (Fn+Left Arrow) reduces brighness up until the last step, at which point the display goes full brightness (and then cycles back around from there). BrightnessUp (Fn+Right Arrow) works normally. The "Dim display when idle" checkbox on the "On Battery Power" tab actually causes the display to brighten when the slider is set to 0%. The display alternatingly gets brighter and dimmer when the "Dim display brightness by" slider is moved in one direction. The backlight flickers several times when the brightness is changed by g-p-m after idle time. The "Dim display brightness by" slider doesn't appear to have any effect when set to a value other than 0%. I'm willing to run any diagnosis and monitoring commands or procedures you need in order to figure this out.
The brightness changes even when "Dim display when idle" is unchecked. Oh, and I forgot to mention that I currently have acer_acpi-0.10-1.lvn8 installed.
With "Dim display when idle" unchecked or checked, on fedora kernels 2.6.23... and 2.6.24.... whith acer_acpi installed or not installed I have incorrect brightness adjustment on Acer Aspire 5720: BrightnessUp (Fn+Right Arrow) increase brightness 2 or 3 steps and then reset it to 0. BrightnessDown (Fn+Left Arrow) set brightness to 0. With acer_acpi echo $X > /proc/acpi/acer/brightness , when X=0 to 9 works fine.
Do you have better luck with a more recent kernel?
kernel-2.6.24.4-64.fc8.x86_64 acer_acpi-0.11.1-1.lvn8 (In reply to comment #0) > Pressing BrightnessDown (Fn+Left Arrow) reduces brighness up until the last > step, at which point the display goes full brightness (and then cycles back > around from there). BrightnessUp (Fn+Right Arrow) works normally. Fixed. > The "Dim display when idle" checkbox on the "On Battery Power" tab actually > causes the display to brighten when the slider is set to 0%. Still broken. Causes the display to brighten to "On AC Power" reduced by "On Battery Power" value. > The display alternatingly gets brighter and dimmer when the "Dim display > brightness by" slider is moved in one direction. Fixed. > The backlight flickers several times when the brightness is changed by g-p-m > after idle time. Fixed. > The "Dim display brightness by" slider doesn't appear to have any effect when > set to a value other than 0%. Fixed. (In reply to comment #1) > The brightness changes even when "Dim display when idle" is unchecked. Still broken. So the idle functionality is still broken, but everything else works.
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