I really don't know anything about the code, but if you claim the
correct place to fix this is in the kernel then I recommend filing a bug
upstream, if one hasn't already been filed. Also make sure you test this
on the mainline kernel to make sure it's not caused by an Ubuntu patch.
** Package cha
Gabe, is it possible to find out the source code that sets the values
for brightness and actual_brightness and get them to agree after boot
up?
It certainly would be better to try to fix it at the upstream source.
My limited knowledge of /sys/ directory is that it's mostly created by
kernel drive
Adding the following, as per Pauls instructions, seems to have worked on
my system (as far as suspend goes):
brt=`cat /sys/devices/virtual/backlight/acpi_video0/brightness`
abrt=`cat /sys/devices/virtual/backlight/acpi_video0/actual_brightness`
if [ "$brt" != "$abrt" ]; then
echo $abrt > /sys/devi
Is syncing brightness to actual_brightness an acceptable solution to
this problem? If so, can we push to get this fix into Lucid, or at least
Maverick?
** Tags removed: regression-release
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Thank you, Pauls. The fglrx driver suggested by Ubuntu was the generic:
"3D-accelerated proprietary graphics driver for ATI cards." Installing
the driver seemed to create more (and more serious) problems than it
solved, so I uninstalled it. (I'm not a gamer and probably don't need
accelerated graph
Patrick,
1) install the fglrx driver you desire
2) open terminal and enter:
$ find /sys/ -iname '*bright*'
3) post back the results and we'll help you with the rc.local script.
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Same problem. This is using 64Bit Ubuntu 10.04 on a VAIO VGN-FW373J. ATI
Mobility Radeon HD 3650.
The Bug has put me between a rock and a hard place (such that using
Ubuntu on this system looks undoable). The screen is too dim to use
after any Sleep or Hibernation.
Installing the 2D-3D driver sol
Hmm... strange.
I overwrote the values in
/sys/devices/virtual/backlight/mbp_backlight/brightness and
/sys/devices/virtual/backlight/mbp_backlight/actual_brightness and now
the brightness seems to be properly saved on suspend.
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display is fully dimmed after resume from suspend
https://bugs.lau
I am also experiencing this bug with 10.04. I just can't remember
having it with 9.10.
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Marten, you might want to try something like this in your /etc/rc.local:
brt=`cat /sys/devices/virtual/backlight/mbp_backlight/brightness`
abrt=`cat /sys/devices/virtual/backlight/mbp_backlight/actual_brightness`
logger -t rc.local "brightness was $brt , actual_brightness was $abrt"
if [ "$brt" !=
I am running 10.04 (final) on a MacBook Pro 5,5 and the workaround
described by Harm and pauls does not work. Even though after resume from
suspend the screen is clearly on maximum brightness, both
/sys/devices/virtual/backlight/mbp_backlight/brightness and
/sys/devices/virtual/backlight/mbp_backli
Thanks Harm. I forgot that "!=" is for strings and strings require
quotes. I guess I should have used "-ne" instead and it probably would
have worked. My script failed to set brightness to 7 on a subsequent
boot and I had the dim display upon resume again. But, after changing
it, it seems to al
Dell XPS M1330, Nvidia GeForce 8400M GS graphics card here. I can confirm
everything. I had this bug already on Karmic, did an upgrade to Lucid - the bug
continues.
pauls's script with Harm's mod works like a charm for me.
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@pauls: that's a great find and I can confirm that syncing "brightness"
to "actual_brightness" at boot time fixes the problem. I just had to
make a small modification to the script for it to work on karmic:
brt=`cat /sys/devices/virtual/backlight/acpi_video0/brightness`
abrt=`cat /sys/devices/virt
I wonder if there was a change in how acpi records / sets brightness and
gnome-power-manager was not updated to realize it.
I notice 2 different kernel locations on my system for brightness.
One is /sys/devices/virtual/backlight/acpi_video0/brightness and has the
value of 0 on boot up. This seem
This is still a problem on lucid gnome power manager here on a dell
inspiron with nvidia 7300
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@Sebastien: I don't think it is the same bug, I only have this problem
between suspend/resume cycles, I will test what happen on reboot, but as
far as I remember it was brightness was being saved OK.
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** Changed in: gnome-power-manager (Ubuntu)
Importance: Undecided => Low
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similar to bug #35223?
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I'm experiencing this problem on ASUS F3Jp with ATI Radeon X1700. So
same here, dimmed screen on the first resume, but bright on the second.
Thanks
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I can confirm i'm having the same problem/bug on Compaq CQ60-210US with
nvidia geforce 8200m. it is also plugged in when put to sleep, and is
still plugged in when resuming. ubuntu 9.10 Karmic
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** Tags added: karmic lucid
** Tags added: karmik
** Tags removed: karmic
** Tags added: karmic
** Tags removed: karmik
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I can confirm this bug in Lucid daily build 03/11 with nouveau driver on
a Dell Precision M90 (x86_64)
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Confirming this bug too on Dell Vostro 1500 with nvidia drivers.
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-
I can confirm this bug with all the Ubuntu 9.10 updates to this date.
(HP dv5-1050en)
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gateway mt3422
ubuntu 9.10 i386 up-to-date
using default gnome-power-manager settings
test done on ac power only. 100% reproducible as stated here.
screen too dim only on first resume from suspend after boot.
when checked, power-manager reports brightness at 100%.
adjusting gnome-power-manager di
The one thing I have noticed is that when I resume from standby, the
display level is still at 100%.
Also, I am using AC power when entering standby and still on ac power
when resuming from standby
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You re
This is also a problem for me. After a suspend the brightness is at its
lowest and said notifications show that the brightness is at its
highest.
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yes ,this bug is seen in karmic,i didnt have it in jaunty.
the brightness is at the lowest after suspend,it is very consistent.
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I have gotten this bug again, though it's not as consistent as it use to
be; sometimes I suspend and it resumes at normal brightness, and
sometimes it's dimmed.
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OK, putting this back to confirmed since this isn't fixed for everyone.
** Changed in: gnome-power-manager (Ubuntu)
Status: Incomplete => Confirmed
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This is most definitely still a problem for me. I put my laptop to
sleep before posting this just to check. I am 100% up to date on
updates.
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This has been fixed for me, though I have no idea which updates did the
trick. Is anyone else still experiencing this after all Karmic updates
are applied?
** Changed in: gnome-power-manager (Ubuntu)
Status: Confirmed => Incomplete
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display is fully dimmed after resume from suspend
http
Added regression-release tag since this worked before Karmic.
** Tags added: regression-release
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I can confirm this bug & Gabe's last post.
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A weird part of this bug: after you resume from suspend and the
brightness is low, raising the brightness by one spawns a notification,
as it should, except the notification shows the brightness as full. If
you raise the brightness again, the notification will display the
correct (low) brightness l
Bug #417610 may also be a duplicate of this bug, though the scope of
that bug report is currently limited to intel graphics cards.
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Can anyone test this on Kubuntu to make sure it is a bug in gnome-power-
manager and not pm-utils or something else?
** Changed in: gnome-power-manager (Ubuntu)
Status: New => Confirmed
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Confirming the bug. Dim on first resume after boot. Using non-free
Nvidia drivers.
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Also experiencing the same problem. Also using the non-free nvidia
kernel module. Screen brightness is dimmed only on first resume from
suspend, but I've also noticed that the screen is not
responding/redrawing correctly on every resume. New windows are drawn
but anything that happens within a wind
Same problem.
Yes, seems to only affect the first suspend operation between total shutdowns.
Not sure if these are also bugs, but:
1. If I suspend by closing the lid I'm asked for a pswd upon resumption,
whereas suspend by selecting suspend in shutdown menu does not require a
pswd to resume.
2.
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/33654420/Dependencies.txt
** Attachment added: "DevkitPower.txt"
http://launchpadlibrarian.net/33654421/DevkitPower.txt
** Attachment added: "GConfNonDefault.txt"
http://launchpadlibrarian.net/33654422/GConfNonDefault
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