Rafał Ochmański, could you please confirm this issue exists with the
latest development release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains,
could you please run the following command in the development release
from a Terminal
My testing has shown this bug to be present in various different
laptops. It is very ubiquitous.
Brightness is changed in two steps instead of one. At some point I
thought it was an actual design decision from Ubuntu team.
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same here, the bug persist in raring
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https://bugs.launchpad.net/bugs/1069357
Title:
Hardware keys change backlight brightness in much larger
increments/steps than expected
To
Bug persists in raring.
** Tags added: raring
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Title:
Hardware keys change backlight brightness in much larger
increments/steps than expected
# echo -n 0 /sys/module/video/parameters/brightness_switch_enabled
this works for me,
Thank you
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https://bugs.launchpad.net/bugs/1069357
Title:
Hardware keys change backlight
i have the same issue and i notice that this is only happening when the
gnome-settings-daemon is running, maybe the problem appeared after the
upgrade of gnome 3.4 to gnome 3.6?
i can see that because when im in the lightdm, the brightness control
works fine
I really dont know much but this is
I've been looking in to this recently as I have the same problem with my
thinkpad and we're currently dealing with Lenovo on this. The problem on
the thinkpad side is pretty well understood, it's probably exactly the
same here. The reason we can increment and decrement by 3 but not by 1
is that we
We defintely have these keys responding as input devices based on
bootdmesg:
[ 27.522660] input: Dell WMI hotkeys as /devices/virtual/input/input7
One thing that's confusing me is that you said this works well on 12.04,
when in fact this has been a problem for a long time. Unless you
installed
It worked perfectly (ie. incremented by one from 0 to 15) in regular
12.04 installed from alternate cd from Ubuntu's website. The computer
came with Windows pre-installed.
More than that, it still works perfectly during boot, before the
graphical interface comes up. I have whole-disk encryption
OK, here's output from xev. I pressed the increase brightness
combination twice, and decrease combination once. It seems that the
first increase resulted in one even but all further presses resulted in
two events:
MappingNotify event, serial 40, synthetic NO, window 0x0,
request
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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Title:
Hardware keys change backlight brightness in much larger
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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Title:
Hardware keys change backlight brightness in much larger
Thank you for taking the time to report this bug and helping to make
Ubuntu better. We need some more information from you before we can
start working on this bug.
Please run the following command which will attach necessary
information:
apport-collect 1069357
Bear in mind that you may need to
apport information
** Tags added: apport-collected running-unity
** Description changed:
SInce the upgrade to Ubuntu 12.10, hardware keys for regulating
backlight brightness (fn+f4, fn+f5) change brightness in large
increments, even though much finer control is available both through the
apport-collect 1069357
That doesn't work by default:
# apport-collect 1069357
ERROR: The launchpadlib Python module is not installed. This functionality is
not available.
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