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. With the video module *not* blacklisted: alk...@alkisg:~$ find /sys -name '*bright*' 2>&- /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 /sys/devices/virtual/backlight/acpi_video0/brightness /sys/devices/virtual/backlight/acpi_video0/actual_brightness /sys/devices/virtual/backlight/acpi_video0/max_brightness <...omitting some non-useful devices...> /sys/module/video/parameters/brightness_switch_enabled /sys/module/acer_wmi/parameters/brightness With the video module *blacklisted*: /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. ** Attachment added: "lshal.zip" http://launchpadlibrarian.net/23548408/lshal.zip -- Acer Aspire 5920G - some Fn keys not working https://bugs.launchpad.net/bugs/338328 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
