Touchpad LED on Dell's laptop is not working
Bug #914348 reported by
AceLan Kao
This bug affects 6 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gnome-settings-daemon (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
Oneiric |
Won't Fix
|
Medium
|
AceLan Kao | ||
Precise |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
In some of Dell laptops, they support a touchpad LED to indicate the enablement/
And kernel(after 3.2) supports an interface to turn on/off the LED, user space app should take the responsibility to handle this,
and I think gnome-settings-
The interface is in /sys
To turn on the LED
echo 1 > /sys/class/
To turn it off
echo 0 > /sys/class/
tags: | added: blocks-hwcert-enablement |
Changed in gnome-settings-daemon (Ubuntu): | |
importance: | Undecided → High |
assignee: | nobody → AceLan Kao (acelankao) |
Changed in gnome-settings-daemon (Ubuntu Oneiric): | |
status: | New → In Progress |
Changed in gnome-settings-daemon (Ubuntu Precise): | |
status: | Confirmed → In Progress |
Changed in gnome-settings-daemon (Ubuntu Oneiric): | |
importance: | Undecided → High |
assignee: | nobody → AceLan Kao (acelankao) |
Changed in gnome-settings-daemon (Ubuntu): | |
status: | In Progress → Confirmed |
Changed in gnome-settings-daemon (Ubuntu Oneiric): | |
status: | In Progress → Confirmed |
Changed in gnome-settings-daemon (Ubuntu Precise): | |
status: | In Progress → Confirmed |
Changed in gnome-settings-daemon (Ubuntu): | |
importance: | High → Medium |
Changed in gnome-settings-daemon (Ubuntu Oneiric): | |
importance: | High → Medium |
Changed in gnome-settings-daemon (Ubuntu Precise): | |
importance: | High → Medium |
Changed in gnome-settings-daemon (Ubuntu Oneiric): | |
status: | Confirmed → Won't Fix |
Changed in gnome-settings-daemon (Ubuntu Precise): | |
assignee: | AceLan Kao (acelankao) → nobody |
Changed in gnome-settings-daemon (Ubuntu): | |
assignee: | AceLan Kao (acelankao) → nobody |
importance: | Medium → Undecided |
Changed in gnome-settings-daemon (Ubuntu Precise): | |
importance: | Medium → Undecided |
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Hi,
I'm trying to build a patch for this issue, but I encountered some problems.
1. The permission of the file in sysfs is 0644, so gsd(gnome- settings- daemon) should have root privilege to access the file. leds/dell- laptop: :touchpad/ brightness
-rw-r--r-- 1 root root 4096 Jan 13 17:04 /sys/class/
But the gsd run as a normal user privilege, so it don't have the permission to control the touchpad LED.
I'm wondering how user space application deals with this kind of issue.
2. After system recovered from S3, the touchpad LED won't turn on again. Is there any way that gsd can know the system recovered from S3 and reset the LED status? I can discuss with the driver maintainer if there is no way to know that.