Public bug reported:
Description of problem:
I have an Acer TravelMate 3260 laptop. The ACPI stuff like bluetooth, screen
brightness etc. is handled by acer-wmi module. In Ubuntu 8.04, brightness
control worked perfectly. On trying the Intrepid LiveCD, I am having the
problems with both control of brightness in preferences, and the on-screen
display which appears when I change brightness using the Fn+Arrow keys. The
problem is described in detail below. The problem is related to
gnome-power-manager per se.
This bug is reproducible on Fedora 10 as well.
How reproducible:
Always
Steps to Reproduce:
1. In g-p-m Preferences, "On AC Power", Set display brightness to XX% doesn't
work
2. Control brightness using Fn+Left/Right arrow keys, OSD shoots beyond max and
min limits
Actual results:
1. The brightness does not reduce/increase
2. The OSD fill increases even after full brightness, and decreases even after
zero
Expected results:
1. Change should take place instantly
2. OSD fill limits should be between actual limits of brightness only
Additional info:
I am pasting this info from fedora, but the same is also applicable from
Intrepid LiveCD.
I can control brightness software-"manually" from the console, by manually
writing and reading entries from
/sys/devices/platform/acer-wmi/backlight/acer-wmi. Here is sample output:
[EMAIL PROTECTED] acer-wmi]$ pwd
/sys/devices/platform/acer-wmi/backlight/acer-wmi
[EMAIL PROTECTED] acer-wmi]$ cat max_brightness
15
[EMAIL PROTECTED] acer-wmi]$ cat actual_brightness
10
[EMAIL PROTECTED] acer-wmi]$ echo 5 | sudo tee brightness
5
[EMAIL PROTECTED] acer-wmi]$ cat brightness
5
[EMAIL PROTECTED] acer-wmi]$ cat actual_brightness
5
[EMAIL PROTECTED] acer-wmi]$
** Affects: gnome-power
Importance: Unknown
Status: Unknown
** Affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: New
** Affects: gnome-power-manager (Fedora)
Importance: Unknown
Status: Confirmed
** Bug watch added: Red Hat Bugzilla #473600
https://bugzilla.redhat.com/show_bug.cgi?id=473600
** Also affects: gnome-power-manager (Fedora) via
https://bugzilla.redhat.com/show_bug.cgi?id=473600
Importance: Unknown
Status: Unknown
** Bug watch added: GNOME Bug Tracker #563165
http://bugzilla.gnome.org/show_bug.cgi?id=563165
** Also affects: gnome-power via
http://bugzilla.gnome.org/show_bug.cgi?id=563165
Importance: Unknown
Status: Unknown
--
[Regression intrepid] Screen brightness problems on Acer laptop
https://bugs.launchpad.net/bugs/304940
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