[Regression intrepid] Screen brightness problems on Acer laptop
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gnome-power |
Expired
|
Medium
|
|||
gnome-power-manager (Fedora) |
Fix Released
|
High
|
|||
gnome-power-manager (Ubuntu) |
Triaged
|
Low
|
Unassigned |
Bug Description
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/
[rohan@fedora acer-wmi]$ pwd
/sys/devices/
[rohan@fedora acer-wmi]$ cat max_brightness
15
[rohan@fedora acer-wmi]$ cat actual_brightness
10
[rohan@fedora acer-wmi]$ echo 5 | sudo tee brightness
5
[rohan@fedora acer-wmi]$ cat brightness
5
[rohan@fedora acer-wmi]$ cat actual_brightness
5
[rohan@fedora acer-wmi]$
Changed in gnome-power-manager: | |
status: | Unknown → Confirmed |
Changed in gnome-power-manager: | |
importance: | Undecided → Low |
status: | New → Triaged |
Changed in gnome-power: | |
status: | Unknown → New |
Changed in gnome-power-manager (Fedora): | |
status: | Confirmed → Fix Released |
Changed in gnome-power: | |
importance: | Unknown → Medium |
Changed in gnome-power: | |
status: | New → Expired |
Changed in gnome-power-manager (Fedora): | |
importance: | Unknown → High |
Description of problem:
I just installed F10 on my Acer TravelMate 3260 laptop. The ACPI stuff like bluetooth, screen brightness etc. is handled by acer-wmi module. In Fedora 9, brightness control worked perfectly. In Fedora 10, 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.
Version-Release number of selected component (if applicable): manager- 2.24.1- 3.fc10. i386
gnome-power-
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: platform/ acer-wmi/ backlight/ acer-wmi. Here is sample output:
I can control brightness software-"manually" from the console, by manually writing and reading entries from /sys/devices/
[rohan@fedora acer-wmi]$ pwd platform/ acer-wmi/ backlight/ acer-wmi
/sys/devices/
[rohan@fedora acer-wmi]$ cat max_brightness
15
[rohan@fedora acer-wmi]$ cat actual_brightness
10
[rohan@fedora acer-wmi]$ echo 5 | sudo tee brightness
5
[rohan@fedora acer-wmi]$ cat brightness
5
[rohan@fedora acer-wmi]$ cat actual_brightness
5
[rohan@fedora acer-wmi]$