[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Importance: Unknown = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/320874 Title: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux (Ubuntu) Assignee: Andy Whitcroft (apw) = (unassigned) -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
The fixes referred to in the linked bug are now included in Karmic so this is Fix Released there. Also the latest -proposed has fixes to ensure the brightness values are ordered correctly. If you could test one of those and report back that would be helpful. ** Changed in: linux (Ubuntu) Status: Incomplete = In Progress ** Changed in: linux (Ubuntu) Status: In Progress = Incomplete -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
For what it's worth, the backlight seems to work as expected in Kubuntu Karmic. Unfortunately, I don't have an Ubuntu/Karmic installation to try out at the moment. When it comes to Jaunty, I've completely given up on the intel stack and am currently running what's available from the xorg-edgers PPA (including kernel)... I'm happy to have this changed to Fix Released as it works fine under KDE. If you want me to try it out with gnome-power-manager as well, however, let me know here, and I'll do an apt-get install ubuntu- desktop. -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: Incomplete = Fix Released -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: Confirmed = Incomplete -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: Fix Released = Confirmed -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
The upstream bug is now resolved, and as far as I understand it, the fix is a general acpi-video fix that possibly could close a number of bugs for jaunty. I haven't had time to test yet, but it would be great if one of our kernel guys could take a look at it. -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
Those patches are very new, when they hit someones tree we can try them out. -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: Incomplete = Fix Released -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: In Progress = Incomplete -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
is this a duplicate of bug #311716 ? -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
Note sure if it's a dupe. I'm seeing the problem on Jaunty with a 2.6.28 kernel, so it probably isn't. One note about this bug: I tried running on kernel 2.6.29-rc4 and with that kernel the values in /sys/devices/virtual/backlight/acpi_video0/brightness work properly. That is, the values from 0 to 13 correspond to the backlight where 0 is lowest possible and 13 is highest possible. However, the userspace tools didn't work the way they should. Neither xbacklight, gnome-power- manager, nor the fn-keys worked well. The changed the backlight in what seemed to be a random manner. -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: Incomplete = In Progress -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
This bug is particularly important to fix for kubuntu users. In ubuntu, blacklisting the video module gives a working desktop environment, as gnome-power-manager apparently handles the backlight by some other means. The KDE power manager, however, doesn't seem to have this alternate way of controlling the backlight. I personally think the importance on this bug should be bumped as it's 1) a regression, and 2) really bad for laptop users wrt power consumption and battery life. There are reports that the issue indeed is fixed in 2.6.29, so I backport should be possible. -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux (Ubuntu) Assignee: (unassigned) = Andy Whitcroft (apw) Status: Triaged = In Progress -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
I have pulled this patch down and applied it to the Jaunty kernel. I have built some test kernels including this patch if you could test those and report back here. The kernels can be found at the URL below: http://people.ubuntu.com/~apw/lp320874-jaunty/ ** Changed in: linux (Ubuntu) Status: In Progress = Incomplete -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
Andy, the new kernel does not work for me. New behavior: + /sys/devices/virtual/backlight/acpi_video0/brightness seems to work accurately. + xbacklight -set works accurately - xbacklight does not read backlight values properly (it always returns 0.0) - Fn-brightness buttons don't work as they should: Pressing brightness down, brightness goes all the way to 0 and the osd. Brightness up, changes brightness level to 1. That's it, 0 and 1 for down and up. - gnome-power-manager brightness applet do not work properly Back when I filed the upstream bug report, the patch in http://bugzilla.kernel.org/show_bug.cgi?id=12235 solved the issue for me. When my report was marked a duplicate, I was pointed to the patch here: http://bugzilla.kernel.org/show_bug.cgi?id=12249#c34, but haven't had time to try it. However, that patch is not the one you used for the new kernel: http://people.ubuntu.com/~apw/lp320874-jaunty/0001-ACPI- video-Fix-reversed-brightness-behavior-on-Thi.patch. So I'm a bit confused which patch actually is supposed to fix this issue :-/ -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
Thanks Khashayar, I'm just including the upstream git commit id for the Ubuntu kernel team to reference. Thanks. ogasaw...@yoji:~/linux-2.6$ git log -p 935e5f290ec1eb0f1c15004421f5fd3154380fd5 commit 935e5f290ec1eb0f1c15004421f5fd3154380fd5 Author: Zhang Rui rui.zh...@intel.com Date: Thu Dec 11 16:24:52 2008 -0500 ACPI: video: Fix reversed brightness behavior on ThinkPad SL series Section B.6.2 of ACPI 3.0b specification that defines _BCL method doesn't require the brightness levels returned to be sorted. At least ThinkPad SL300 (and probably all IdeaPads) returns the array reversed (i.e. bightest levels have lowest indexes), which causes the brightness management behave in completely reversed manner on these machines (brightness increases when the laptop is idle, while the display dims when used). Sorting the array by brightness level values after reading the list fixes the issue. http://bugzilla.kernel.org/show_bug.cgi?id=12037 Signed-off-by: Zhang Rui rui.zh...@intel.com Tested-by: Lubomir Rintel lkund...@v3.sk Signed-off-by: Len Brown len.br...@intel.com ** Changed in: linux (Ubuntu) Importance: Undecided = Medium Status: New = Triaged -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: Unknown = Invalid -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Status: Unknown = Incomplete -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
** Changed in: linux Bugwatch: Linux Kernel Bug Tracker #12235 = Linux Kernel Bug Tracker #12249 Status: Invalid = Unknown -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
[Bug 320874] Re: [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards
I realized my upstream bug report was marked a duplicate. Changed the link to the linux kernel bug tracker to reflect that. -- [asus] /sys/devices/virtual/backlight/acpi_video0/brightness has it backwards https://bugs.launchpad.net/bugs/320874 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
