i still have this problem on my Sony VPCF12M1E , actually i have it on some
linux distributions , fedora ubuntu suse debian (all current releases, havent
tried the others).
About ubuntu i tried both 10.04lts and 10.10.
The situation is that the screen either works at full brightness or doesnt
@Ryan, is this fix still the cause of a regression for you? Does the
regression still remain in the upcoming Jaunty 9.04 release -
http://cdimage.ubuntu.com/daily-live/current/ . Please let us know.
Thanks.
** Changed in: linux (Ubuntu)
Status: Fix Committed = Fix Released
** Changed
This seems to be resolved. I've upgraded to 9.04 on both my laptops and
I haven't had backlight issues since.
On 4/21/2009 2:15 PM, Leann Ogasawara wrote:
@Ryan, is this fix still the cause of a regression for you? Does the
regression still remain in the upcoming Jaunty 9.04 release -
not a gpm bug.
** Changed in: gnome-power-manager (Ubuntu)
Status: New = Invalid
--
LCD backlight turns off when between discrete levels, both from hotkeys and
from dim-on-idle.
https://bugs.launchpad.net/bugs/121833
You received this bug notification because you are a member of Ubuntu
I thought of a different way to re-add zero: simply allow it as one of the
usable values. As it is right now, gnome-power-manager's indicated brightness
levels
(100, 85, 71, 57, 42, 28, 14, 0)
no longer match the indicated values in the dsdt:
(100, 87, 75, 62, 50, 37, 25, 12, and a true zero
Thank you! I'm glad to see that the 2.6.24-11-generic kernel I recently
installed has fixed this!
One slightly odd request: sometimes, for a gimmick, it's fun to turn off the
backlight deliberately; is there any way to do this now, perhaps by echoing a
specific negative value into sysfs
This was working fine for me on my ThinkPad X61T laptop until the latest
Kernel this worked fine.
With the latest kernel (24-11) my laptop display now properly displays
after resuming from suspend, but now I cannot control the brightness
through the Gnome applet or the function keys on my
Thanks Dana. I'm including the corresponding upstream git commit id's
for the kernel team to reference. Thanks.
commit 38531e6fe51ad5c7dfe72e0e066b5f54bc1921cd
Author: Matthew Garrett [EMAIL PROTECTED]
Date: Wed Dec 26 02:03:26 2007 +
ACPI: video: Rationalise ACPI backlight
Should be in the next kernel upload
** Changed in: linux-source-2.6.22 (Ubuntu)
Status: Incomplete = Won't Fix
** Changed in: linux (Ubuntu)
Assignee: Ubuntu Kernel Team (ubuntu-kernel-team) = Ben Collins
(ben-collins)
Status: Triaged = In Progress
** Changed in: linux
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
LCD backlight turns off when between discrete levels, both from hotkeys and
from dim-on-idle.
https://bugs.launchpad.net/bugs/121833
You received this bug notification because you are a member of Ubuntu
Bugs, which
Hmm, when I was looking at the changelog for 2.6.25-rc1, I noticed the
following two changelogs and bug reports that may address this issue:
ACPI: video: Rationalise ACPI backlight implementation
http://bugzilla.kernel.org/show_bug.cgi?id=9277
It also addresses this second issue of
Try typing the following command in a terminal:
xgamma -gamma 0.75
If that doesn't work you need to install xgamma from the repos.
I have posted my own solution here on setting it up:
http://ubuntuforums.org/showthread.php?p=4168042#post4168042
--
LCD backlight turns off when between
as posted in 138300
https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/138300
Similar behavior on Kubuntu with guidance-power-manager on an HP Pavailion
DV6000T.
Closing screen can cause the backlight to shut-off altogether. Noting that the
brightness level per
(THIS POST IS JUST ME STATING THAT I CHANGE THE SETTINGS IN GCONFIG. TO
SKIP THE READ, VIEW THE ATTACHMENT ON THE SETTINGS I'VE USED TO GET MY
LAPTOP TO STOP THE BLACK SCREEN)
Hello All,
I found a way to fix this. I know nothing about writing patches or anything.
I've only been on Ubuntu for
I have the same problem on my laptop (hp dv2000): the backlight is set to 100%
if the value written to /sys/class/backlight/acpi_video0/brightness is not
among the values provided in /proc/acpi/video/VGA/LCD/brightness:
levels: 100 60 20 28 36 44 52 60 68 76 84 92 100
I think that the kernel
I'm having the same problem on my Gateway CX210X... would really love to
get this thing fixed. Anyone try a manual kernel build?
--
LCD backlight turns off when between discrete levels, both from hotkeys and
from dim-on-idle.
https://bugs.launchpad.net/bugs/121833
You received this bug
Slightly cleaned-up version of the above workaround.
I have had my X session reset a couple times while using this script if
I press the brightness Fn keys really fast. But I don't know if that was
happening before I was using this script or not. Besides that, it seems
stable enough.
**
Please don't encourage people to work around the problem like that.
Please report the problem to upstream HAL or kernel bugzilla.
--
LCD backlight turns off when between discrete levels, both from hotkeys and
from dim-on-idle.
https://bugs.launchpad.net/bugs/121833
You received this bug
HAL LP Bug:
https://bugs.launchpad.net/ubuntu/+source/hal/+bug/162725
--
LCD backlight turns off when between discrete levels, both from hotkeys and
from dim-on-idle.
https://bugs.launchpad.net/bugs/121833
You received this bug notification because you are a member of Ubuntu
Bugs, which is the
Here is a really ugly hack that lets HAL/G-P-M work with the odd
brightness levels mentioned. There is a README inside the tarball. You
have to hard code the legal brightness levels in an FDI file and add
some sh script to some HAL scripts. It only works for devices that use
the sysfs interface to
This also affects Gateway MP8708(from another post) and MP8709(mine).
The reason why values 12, 37, 62 and 87 aren't working is because of the
way G-P-M increments/decrements brightness values. If HAL reports
laptop_panel.num_levels 20 then G-P-M will change the brightness level
by 1 for each
BTW, as mentioned before, this broke from Feisty to Gutsy.
--
LCD backlight turns off when between discrete levels, both from hotkeys and
from dim-on-idle.
https://bugs.launchpad.net/bugs/121833
You received this bug notification because you are a member of Ubuntu
Bugs, which is the bug contact
I am getting this bug on my Compaq Presario f500 laptop, whenever
something changes the brightness, it turns the backlight off completely.
The backlight doesnt even turn back on with a reset, I have to pull the
battery out.
This did not happen with fiesty.
--
LCD backlight turns off when
I managed to fix my LCD-turns-off issue by editing my DSDT; it turns out that
whoever coded it foolishly used if LEqual instead of if LLessEqual, which
meant that any time an invalid brightness value was passed in, the LCD would
turn off. I changed the conditions to make more sense, and now I
Okay, it turns out that the total-breakage was merely HAL breaking on
upgrade; this was fixed by rebooting.
--
LCD backlight turns off when between discrete levels, both from hotkeys and
from dim-on-idle.
https://bugs.launchpad.net/bugs/121833
You received this bug notification because you are
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