[FIXED] after upgrade ACPI can no longer change my screen brightness

EDIT: never mind, it seems to of gone away now...i have no idea what happened, it stopped working randomly then started working just as randomly.....whatever...
Just yesterday i was using my laptop with arch linux with the brightness turned all the way down, as of course it saves battery
but now i turn it on today and the screen is at maximum brightness, and every time i try to change it it just says (in kernel.log) :
Sep  8 10:28:46 Polygon kernel: ACPI: Failed to switch the brightness
Sep  8 10:28:46 Polygon kernel: ACPI: Failed to switch the brightness
so...what got upgraded that broke this? does anyone else have this problem?
here is the past few days of my pacman.log: (it has some entries for kernel-my, a custom compiled kernel, but i get no screen brightness control on my custom compiled kernel, or the default arch one)
[2009-09-01 11:24] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:24] installed kernel26-my (2.6.28-1)
[2009-09-01 11:25] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:25] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:26] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:26] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:29] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:29] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:30] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:30] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:34] removed kernel26-my (2.6.28-1)
[2009-09-01 11:34] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:34] installed kernel26-my (2.6.28-1)
[2009-09-01 11:38] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:38] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:40] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:40] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:40] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:40] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:42] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:42] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:46] removed kernel26-my (2.6.28-1)
[2009-09-01 11:47] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:47] installed kernel26-my (2.6.28-1)
[2009-09-01 12:21] installed rsync (3.0.6-1)
[2009-09-01 12:21] installed abs (2.3.3-1)
[2009-09-01 12:32] installed nvidia_arch-mark-grandi (185.18.36-1)
[2009-09-01 13:01] synchronizing package lists
[2009-09-01 13:02] starting full system upgrade
[2009-09-01 13:03] upgraded python3 (3.1-2 -> 3.1.1-1)
[2009-09-02 09:22] synchronizing package lists
[2009-09-02 09:23] starting full system upgrade
[2009-09-02 09:23] upgraded coreutils (7.4-1 -> 7.5-1)
[2009-09-02 09:23] upgraded libarchive (2.7.0-2 -> 2.7.1-1)
[2009-09-02 09:23] upgraded module-init-tools (3.8-1 -> 3.10-1)
[2009-09-02 09:23] upgraded raptor (1.4.18-1 -> 1.4.19-1)
[2009-09-02 09:23] upgraded redland (1.0.8-3 -> 1.0.9-1)
[2009-09-02 09:23] upgraded syslog-ng (3.0.3-2 -> 3.0.4-1)
[2009-09-02 12:11] removed kernel26-my (2.6.28-1)
[2009-09-02 12:30] >>> Updating module dependencies. Please wait ...
[2009-09-02 12:30] installed kernel26-my (2.6.28-1)
[2009-09-02 12:52] removed nvidia_arch-mark-grandi (185.18.36-1)
[2009-09-02 12:53] installed nvidia_arch-mark-grandi_ver2 (185.18.36-1)
[2009-09-03 10:23] synchronizing package lists
[2009-09-03 10:24] starting full system upgrade
[2009-09-03 19:34] synchronizing package lists
[2009-09-03 19:35] starting full system upgrade
[2009-09-04 09:08] synchronizing package lists
[2009-09-04 09:09] starting full system upgrade
[2009-09-04 12:27] synchronizing package lists
[2009-09-04 12:27] starting full system upgrade
[2009-09-04 12:28] upgraded apr (1.3.8-1 -> 1.3.8-2)
[2009-09-04 12:28] upgraded damageproto (1.1.0-2 -> 1.2.0-1)
[2009-09-04 12:28] upgraded dmxproto (2.2.2-2 -> 2.2.99.1-1)
[2009-09-04 12:28] upgraded fontsproto (2.0.2-2 -> 2.1.0-1)
[2009-09-04 12:28] upgraded videoproto (2.2.2-2 -> 2.3.0-1)
[2009-09-04 12:28] upgraded xf86dgaproto (2.0.3-2 -> 2.0.99.1-1)
[2009-09-04 12:28] upgraded xf86vidmodeproto (2.2.2-2 -> 2.2.99.1-1)
[2009-09-04 12:28] upgraded xineramaproto (1.1.2-2 -> 1.1.99.1-1)
[2009-09-04 12:29] installed pyxdg (0.17-1)
[2009-09-04 12:29] installed setuptools (0.6c9-2)
[2009-09-04 12:29] installed libtorrent-rasterbar (0.14.4-2)
[2009-09-04 12:29]
[2009-09-04 12:29] >>> Deluge's daemon is running with the "deluge" user. The default download directory is /srv/deluge/
[2009-09-04 12:29]
[2009-09-04 12:29] installed deluge (1.1.9-2)
[2009-09-04 12:29] installed python-chardet (1.0.1-2)
[2009-09-04 19:58] synchronizing package lists
[2009-09-04 19:59] starting full system upgrade
[2009-09-06 12:47] synchronizing package lists
[2009-09-06 12:48] starting full system upgrade
[2009-09-06 12:48] upgraded cloog-ppl (0.15.3-1 -> 0.15.7-1)
[2009-09-06 12:48] upgraded gnupg (1.4.9-4 -> 1.4.10-1)
[2009-09-06 12:48] upgraded gstreamer0.10-bad (0.10.13-1 -> 0.10.14-1)
[2009-09-06 12:48] upgraded gstreamer0.10-bad-plugins (0.10.13-1 -> 0.10.14-1)
[2009-09-06 12:48] upgraded gstreamer0.10-good (0.10.15-3 -> 0.10.16-1)
[2009-09-06 12:48] upgraded gstreamer0.10-good-plugins (0.10.15-3 -> 0.10.16-1)
[2009-09-06 12:48] upgraded libdrm (2.4.12-1 -> 2.4.13-1)
[2009-09-06 12:48] upgraded libfontenc (1.0.4-2 -> 1.0.5-1)
[2009-09-06 12:48] upgraded libice (1.0.5-1 -> 1.0.6-1)
[2009-09-06 12:49] upgraded libpciaccess (0.10.6-1 -> 0.10.8-1)
[2009-09-06 12:49] upgraded libxau (1.0.4-1 -> 1.0.5-1)
[2009-09-06 12:49] upgraded libxcursor (1.1.9-2 -> 1.1.10-1)
[2009-09-06 12:49] upgraded libxinerama (1.0.3-2 -> 1.0.99.1-1)
[2009-09-06 12:49] upgraded libxxf86dga (1.0.2-2 -> 1.0.99.1-1)
[2009-09-06 12:49] upgraded libxxf86vm (1.0.2-1 -> 1.0.99.1-1)
[2009-09-06 12:49] upgraded man-db (2.5.5-2 -> 2.5.6-1)
[2009-09-06 12:49] upgraded mesa (7.5-2 -> 7.5.1-2)
[2009-09-06 12:49] upgraded nss (3.12.3.1-1 -> 3.12.4-1)
[2009-09-06 12:49] upgraded pixman (0.14.0-2 -> 0.16.0-1)
[2009-09-06 12:49] installed rasqal (0.9.16-1)
[2009-09-06 12:49] upgraded redland (1.0.9-1 -> 1.0.9-2)
[2009-09-06 12:49] upgraded xf86-input-synaptics (1.1.2-2 -> 1.1.3-1)
[2009-09-06 12:49] upgraded xorg-font-utils (7.4-2 -> 7.4-3)
[2009-09-06 12:49] upgraded xorg-server (1.6.3-4 -> 1.6.3.901-1)
[2009-09-06 17:54] synchronizing package lists
[2009-09-06 17:54] starting full system upgrade
[2009-09-07 12:06] synchronizing package lists
[2009-09-07 12:07] starting full system upgrade
[2009-09-07 12:07] synchronizing package lists
[2009-09-07 12:07] starting full system upgrade
[2009-09-07 12:07] upgraded alsa-lib (1.0.20-1 -> 1.0.21-1)
[2009-09-07 12:07] upgraded alsa-utils (1.0.20-2 -> 1.0.21-1)
[2009-09-07 12:07] upgraded hdparm (9.21-1 -> 9.26-1)
[2009-09-07 12:07] upgraded usbutils (0.84-1 -> 0.86-2)
[2009-09-07 13:15] installed gedit-plugins (2.26.2-1)
[2009-09-07 17:43] synchronizing package lists
[2009-09-07 17:44] starting full system upgrade
[2009-09-07 17:44] Install jack-audio-connection-kit, libsamplerate, ffmpeg
[2009-09-07 17:44] or pulseaudio to get their respective plugins working
[2009-09-07 17:44] upgraded alsa-plugins (1.0.20-1 -> 1.0.21-1)
[2009-09-07 17:44] upgraded gnupg2 (2.0.12-1 -> 2.0.13-1)
[2009-09-08 10:18] synchronizing package lists
[2009-09-08 10:19] starting full system upgrade
[2009-09-08 10:22] upgraded fftw (3.2.1-1 -> 3.2.2-1)
[2009-09-08 10:22] upgraded fuse (2.7.4-3 -> 2.8.0-1)
[2009-09-08 10:22] upgraded gparted (0.4.6-1 -> 0.4.6-2)
Last edited by Polygon (2009-09-10 01:51:39)

Do you happen to know what package broke this? I had this issue a couple weeks ago, and just recently it reappeared.

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