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Message #102195
[Bug 399587] Re: Brightness control does not work with Toshiba Portege M100
This might be fixed in the upcoming upstream 3.20 kernel - see
http://lkml.iu.edu/hypermail/linux/kernel/1502.2/02418.html
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https://bugs.launchpad.net/bugs/399587
Title:
Brightness control does not work with Toshiba Portege M100
Status in upower package in Ubuntu:
Confirmed
Bug description:
Binary package hint: acpi-support
Hi!
I tried to adjust the brightness on my Toshiba Portege M100 by
pressing Fn + F6/F7. Unfortunately nothing happened.
"toshiba_acpi" is loaded and "acpi_listen" gives me the following on
pressing Fn + F6/F7:
# acpi_listen
hkey VALD 00000000 00000140
hkey VALD 00000001 00000140
hkey VALD 00000000 00000141
hkey VALD 00000001 00000141
Running "acpid -d" gives me the following output by pressing Fn +
F6/F7:
# acpid -d
acpid: received event "hkey VALD 00000000 00000140"
acpid: rule from 4077[0:0] matched
acpid: notifying client 4077[0:0]
acpid: rule from 4021[105:106] matched
acpid: notifying client 4021[105:106]
acpid: 2 total rules matched
acpid: completed event "hkey VALD 00000000 00000140"
acpid: received event "hkey VALD 00000001 00000140"
acpid: rule from 4077[0:0] matched
acpid: notifying client 4077[0:0]
acpid: rule from 4021[105:106] matched
acpid: notifying client 4021[105:106]
acpid: rule from /etc/acpi/events/tosh-video_brightnessdown matched
acpid: executing action "/etc/acpi/video_brightnessdown.sh"
BEGIN HANDLER MESSAGES
END HANDLER MESSAGES
acpid: action exited with status 0
acpid: 3 total rules matched
acpid: completed event "hkey VALD 00000001 00000140"
acpid: received event "hkey VALD 00000000 00000141"
acpid: rule from 4077[0:0] matched
acpid: notifying client 4077[0:0]
acpid: rule from 4021[105:106] matched
acpid: notifying client 4021[105:106]
acpid: 2 total rules matched
acpid: completed event "hkey VALD 00000000 00000141"
acpid: received event "hkey VALD 00000001 00000141"
acpid: rule from 4077[0:0] matched
acpid: notifying client 4077[0:0]
acpid: rule from 4021[105:106] matched
acpid: notifying client 4021[105:106]
acpid: 2 total rules matched
acpid: completed event "hkey VALD 00000001 00000141"
So my first guess was to add the keycode in "/etc/acpi/events" but my
first dry run with:
# /etc/acpi/video_brightnessdown.sh
or
# /etc/acpi/video_brightnessup.sh
had no effect.
Btw: changing the brightness with something like:
% echo 'brightness: 1' > /proc/acpi/toshiba/lcd
works but "Power Management Brightness Applet" does not get notified
by that change. In contrast changing the brightness with the applet is
very coarse. Instead of 8 brightness-levels it is only able to set
three levels (0, 3 and 7).
Nevertheless the main goal is to get the function keys running. Any
clues?
# uname -a
Linux antares 2.6.28-13-generic #45-Ubuntu SMP Tue Jun 30 19:49:51 UTC 2009 i686 GNU/Linux
# lsb_release -rd
Description: Ubuntu 9.04
Release: 9.04
# apt-cache policy acpi-support
acpi-support:
Installed: 0.121
Candidate: 0.121
Version table:
*** 0.121 0
500 http://at.archive.ubuntu.com jaunty/main Packages
100 /var/lib/dpkg/status
Thank you for maintaining!
Greetings,
- Darsha
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