I didn't see any difference with
sudo mv /etc/acpi/events /etc/acpi/events.disabled
A workaround for the brightness problem is to blacklist the video module. I don't know if this is a good thing to do or not; but I've been using my laptop like this for a lot of months now without a problem.
/sys/devices/platform/acer-wmi/backlight/acer-wmi/brightness
/sys/devices/platform/acer-wmi/backlight/acer-wmi/actual_brightness
/sys/devices/platform/acer-wmi/backlight/acer-wmi/max_brightness
<...omitting some non-useful devices...>
/sys/module/acer_wmi/parameters/brightness
So maybe the problem is that the video module adds a second, fake, brightness "device"?
In the previous hal.txt I attached, I'm afraid that I had messed with /usr/share/hal/fdi/information/10freedesktop/10-laptop-panel-hardware.fdi.
I include two versions of lshal:
lshal-1.txt => with the original 10-laptop-panel-hardware.fdi.
lshal-2.txt => again with the original 10-laptop-panel-hardware.fdi, but also with the video module blacklisted.
I didn't see any difference with events. disabled
sudo mv /etc/acpi/events /etc/acpi/
A workaround for the brightness problem is to blacklist the video module. I don't know if this is a good thing to do or not; but I've been using my laptop like this for a lot of months now without a problem.
With the video module *not* blacklisted:
alkisg@alkisg:~$ find /sys -name '*bright*' 2>&- platform/ acer-wmi/ backlight/ acer-wmi/ brightness platform/ acer-wmi/ backlight/ acer-wmi/ actual_ brightness platform/ acer-wmi/ backlight/ acer-wmi/ max_brightness virtual/ backlight/ acpi_video0/ brightness virtual/ backlight/ acpi_video0/ actual_ brightness virtual/ backlight/ acpi_video0/ max_brightness video/parameter s/brightness_ switch_ enabled acer_wmi/ parameters/ brightness
/sys/devices/
/sys/devices/
/sys/devices/
/sys/devices/
/sys/devices/
/sys/devices/
<...omitting some non-useful devices...>
/sys/module/
/sys/module/
With the video module *blacklisted*:
/sys/devices/ platform/ acer-wmi/ backlight/ acer-wmi/ brightness platform/ acer-wmi/ backlight/ acer-wmi/ actual_ brightness platform/ acer-wmi/ backlight/ acer-wmi/ max_brightness acer_wmi/ parameters/ brightness
/sys/devices/
/sys/devices/
<...omitting some non-useful devices...>
/sys/module/
So maybe the problem is that the video module adds a second, fake, brightness "device"?
In the previous hal.txt I attached, I'm afraid that I had messed with /usr/share/ hal/fdi/ information/ 10freedesktop/ 10-laptop- panel-hardware. fdi.
I include two versions of lshal: panel-hardware. fdi. panel-hardware. fdi, but also with the video module blacklisted.
lshal-1.txt => with the original 10-laptop-
lshal-2.txt => again with the original 10-laptop-