After running gconftool-2 --recursive-unset /apps/gnome-power-manager, the brightness applet started to work again. In fact it and gpm's automatic backlight manipulation worked perfectly fine for a while, but just now, as I switched to battery power it started to be flaky again, behaving the way I described in the original post.
This is obviously a gpm problem, so I will re-assign the bug to gpm instead. ** Changed in: gnome-power-manager (Ubuntu) Sourcepackagename: hal => gnome-power-manager ** Description changed: - Binary package hint: hal - I file this bug against hal as this is probably where it will end up - anyway. + After loading the fujitsu-laptop module (which creates a backlight interface under /sys/class/backlight/fujitsu-laptop), gpm believes it can handle backlight settings. However, the handling is very weird as setting backlight to 100 might result in 50% brightness, 30, results in 100% and so on. - After loading the fujitsu-laptop module (which creates a backlight - interface under /sys/class/backlight/fujitsu-laptop), gpm believes it - can handle backlight settings. However, the handling is very weird as - setting backlight to 100 might result in 50% brightness, 30, results in - 100% and so on. + Although the summary says the problem is with fujitsu platforms, the + fujitsu-laptop module utilizes the generic /sys/class/backlight/ + interface, so this problem should be seen by others as well. - I thought this might be related to the fact that the xbacklight tool - wasn't working properly, so after a suggestion from the xorg mailing - list I patched the intel driver so that it would be aware of the - fujitsu-laptop interface. After this, xbacklight works perfectly fine - (much better than gpm/hal worked), but gpm/hal stopped handling - backlight alltogether. That is, gpm still believes it can handle the - backlight (as hal finds the interface, I presume), but changing it - results in nothing. - - For the record, the patch against the intel driver is this: - diff -Naur xserver-xorg-video-intel-2.2.1/src/i830_lvds.c xserver-xorg-video-intel-2.2.1-new/src/i830_lvds.c - --- xserver-xorg-video-intel-2.2.1/src/i830_lvds.c 2008-02-20 22:41:25.000000000 +0100 - +++ xserver-xorg-video-intel-2.2.1-new/src/i830_lvds.c 2008-03-01 11:37:09.000000000 +0100 - @@ -68,6 +68,7 @@ - "thinkpad_screen", - "acpi_video1", - "acpi_video0", - + "fujitsu-laptop", - NULL, - }; + ----- + Edit: Cleaned up the report, removed irrelevant parts about the xbacklight utility. -- gnome-power-manager does not handle backlight properly on fujitsu platforms https://bugs.launchpad.net/bugs/197253 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
