[Bug 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
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On 2008-11-29T16:53:13+00:00 Rohan wrote:
Description of problem:
I just installed F10 on my Acer TravelMate 3260 laptop. The ACPI stuff like
bluetooth, screen brightness etc. is handled by acer-wmi module. In Fedora 9,
brightness control worked perfectly. In Fedora 10, I am having the problems
with both control of brightness in preferences, and the on-screen display which
appears when I change brightness using the Fn+Arrow keys. The problem is
described in detail below.
Version-Release number of selected component (if applicable):
gnome-power-manager-2.24.1-3.fc10.i386
How reproducible:
Always
Steps to Reproduce:
1. In g-p-m Preferences, "On AC Power", Set display brightness to XX% doesn't
work
2. Control brightness using Fn+Left/Right arrow keys, OSD shoots beyond max and
min limits
Actual results:
1. The brightness does not reduce/increase
2. The OSD fill increases even after full brightness, and decreases even after
zero
Expected results:
1. Change should take place instantly
2. OSD fill limits should be between actual limits of brightness only
Additional info:
I can control brightness software-"manually" from the console, by manually
writing and reading entries from
/sys/devices/platform/acer-wmi/backlight/acer-wmi. Here is sample output:
[rohan@fedora acer-wmi]$ pwd
/sys/devices/platform/acer-wmi/backlight/acer-wmi
[rohan@fedora acer-wmi]$ cat max_brightness
15
[rohan@fedora acer-wmi]$ cat actual_brightness
10
[rohan@fedora acer-wmi]$ echo 5 | sudo tee brightness
5
[rohan@fedora acer-wmi]$ cat brightness
5
[rohan@fedora acer-wmi]$ cat actual_brightness
5
[rohan@fedora acer-wmi]$
Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/304940/comments/0
On 2008-11-29T16:56:55+00:00 Rohan wrote:
This output might be helpful:
[rohan@fedora ~]$ lshal | grep laptop_panel
info.capabilities = {'laptop_panel'} (string list)
info.category = 'laptop_panel' (string)
laptop_panel.access_method = 'general' (string)
laptop_panel.num_levels = 16 (0x10) (int)
Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/304940/comments/1
On 2008-12-03T21:33:17+00:00 Rohan wrote:
I could reproduce this exact same bug on Ubuntu 8.10 livecd which uses
GNOME 2.24 too. Hence I concluded that this might be an upstream bug,
and filed one here - http://bugzilla.gnome.org/show_bug.cgi?id=563165
Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/304940/comments/2
On 2008-12-09T21:49:46+00:00 Rohan wrote:
This is something I noticed of Fedora 10 - whenever I change the
brightness using the keyboard (Fn-Left/Right Arrow) key, I get this
message in dmesg:
[rohan@fedora Shared]$ dmesg
ACPI: EC: non-query interrupt received, switching to interrupt mode
ACPI: EC: non-query interrupt received, switching to interrupt mode
ACPI: EC: non-query interrupt received, switching to interrupt mode
This happens regardless whether acer_wmi module is loaded or unloaded.
Could this be indicative of some problem, or is it harmless?
Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/304940/comments/4
On 2009-02-09T04:57:43+00:00 Jafaruddin wrote:
Same thing on Fedora 10, Acer Travelmate 6492.
The symptom is as described by Rohan.
Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/304940/comments/5
On 2009-02-25T09:59:25+00:00 Rohan wrote:
Update: I tried reproducing this situation on recently released Debian
lenny, and there the indicator and slider works perfectly. Debian has
g-p-m 2.22.1.
Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/304940/comments/6
On 2009-03-05T13:00:32+00:00 Rohan wrote:
The exact same problem exists in Fedora 11 Alpha and Ubuntu 9.04 Alpha 5, so I
am prompted to think it is a gnome 2.24 and 2.26 problem.
Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/304940/comments/11
On 2009-04-15T15:59:49+00:00 Richard wrote:
Does this still happen with the version in fedora rawhide, or the
version
[Bug 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
** Changed in: gnome-power Status: New = Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/304940 Title: [Regression intrepid] Screen brightness problems on Acer laptop To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-power/+bug/304940/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
** Changed in: gnome-power Importance: Unknown = Medium -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
Hi Rohan, does this bug exist in the latest Karmic releases? I'm trying to see if this is a duplicate: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/378072 or if it has been fixed. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
I am very sorry, I no longer have this laptop, so I won't be able to test it. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
I can confirm that this bug occurs in Ubuntu 9.04 release too. As the previous update by Bug Watcher shows, it has been fixed in Fedora 11, so can the fix be backported? -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
** Changed in: gnome-power-manager (Fedora) Status: Confirmed = Fix Released -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
I can confirm that the module is not at fault, /sys/class/backlight /acer-wmi/brightness reports 0 when the screen is at minimum brightness, and 15 when at maximum brightness, and further key-presses produce no effect on the actual screen brightness nor the reported value. However, the gnome brightness meter still moves up and down past those limits, as if it is keeping track of a running total, rather than reading the current value from any authoritative source. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
Also, the old meter displayed properly. (Intended as a data-point, not as a knock against notify-osd) -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
Carey, by the old meter, do you mean the one in hardy i.e. gnome 2.22? Because intrepid i.e. gnome 2.24 onwards, the meter hasn't been working properly for me. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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
Re: [Bug 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
@Rohan From memory, it worked until fairly recently. I'll download an intrepid live cd and verify it though. On Sun, Mar 22, 2009 at 7:32 AM, Rohan Dhruva rohandhr...@gmail.com wrote: Carey, by the old meter, do you mean the one in hardy i.e. gnome 2.22? Because intrepid i.e. gnome 2.24 onwards, the meter hasn't been working properly for me. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 You received this bug notification because you are a direct subscriber of the bug. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
As mentioned in the above report, it seems that problem is that g-p-m is not getting proper values from hardware. However, I have talked to the maintainer of the acer-wmi module (which handles acpi stuff for acer), and he feels that the module itself is not at fault. What can I do to debug this problem further? -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
The exact same problem exists in Fedora 11, so I am prompted to think it is a gnome 2.24 and 2.26 problem. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
Update 2: I tried the Jaunty Alpha 5 livecd, and the problem persists even in the new notifications system - here is the bug about it here -- https://bugs.launchpad.net/bugs/337772 -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
Update: I tried reproducing this situation on recently released Debian lenny, and there the indicator and slider works perfectly. Debian has g-p-m 2.22.1. -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
** Tags added: regression-release -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
** Changed in: gnome-power Status: Unknown = New -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
** Changed in: gnome-power-manager (Ubuntu) Importance: Undecided = Low Status: New = Triaged -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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 304940] Re: [Regression intrepid] Screen brightness problems on Acer laptop
** Changed in: gnome-power-manager (Fedora) Status: Unknown = Confirmed -- [Regression intrepid] Screen brightness problems on Acer laptop https://bugs.launchpad.net/bugs/304940 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
