Kamal:
Many thanks for your patience and help. I was able to find the patches as you
instructed me. I applied the ones from natty on linux-2.6.38-rc6 sources from
Debian repositories (package linux-source-2.6.38-rc6). All the patches succeded
at once except for the one called drm/i915/panel:
Kamal:
I wasn't able to find the kernel patches in your sources trees. Should I get
source files from the tree and replace them in my Debian sources?
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@chamilis - The individual source patches for my PPA kernels are
available in my git trees. See the links to my Ubuntu Maverick and
Natty git trees in the PATCHES / GIT BRANCHES section in the PPA
Description text on the PPA page:
Alright, I got it. If I use the generic-pae kernel, Virtualbox won't
work. So I set my grub to automatically boot to the -generic (without
pae) kernel -- the power management option works and so does Virtualbox.
Finally! {I'm happy at least for now.}
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Has anyone tried running Virtualbox with this temporary package? Since
applying the PPA, I cannot run a virtual machine properly, only if I
reboot and select another kernel version.
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Virtualbox (4.0.4 r70112) works fine for me (Acer Aspire 5810T)
2.6.35-27-generic #47+kamal~mjgbacklight1-Ubuntu SMP Tue Feb 15 18:33:12 UTC
2011 x86_64 GNU/Linux
2011/2/19 JeanAustinR zeroseven0...@gmail.com
Has anyone tried running Virtualbox with this temporary package? Since
applying the
@Matthias
probably you should read the patch description carefully. I've changed this:
GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_backlight=vendor
thinkpad_acpi.brightness_enable=0
in /etc/default/grub.
After update it works on my Lenovo Z360.
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Yeah, I read it and tried it, but it produces no effect whatsoever
comprared to only booting with the acpi_backlight=vendor line - I have
exactly the same problem again.
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** Tags added: hwe-blocker
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Title:
Screen brightness control fails on Dell Studio 1558
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Hi,
I tried the patch today on a Leonvo Z360 running on xubuntu 10.10.
After installing the fix and adding the line acpi_backlight=verdor, I am
able to adjust brigthness with the brightness control in the panel.
However, the hotkeys don't work (minor issue, I can live with that), but
as soon I
Hi Kamal,
I've tried the latest kernel release and it works great except for a
minor issue.
I lock the PC's screen while I'm away from it, and have it set to 'blank' the
screen (no screensaver animation).
I usually have the screen set to between 1/4 and 1/2 max brightness. After a
while of
On Wed, 2011-02-09 at 02:52 +, philipballew wrote:
on my dell studio i558 the ppa: ppa:kamalmostafa/linux-kamal-
mjgbacklight and now the laptop starts with contrast all the way down.
has anyone else found this error and is there a workaround?
Hi philipballew-
I'm surprised that you're
i will do that, though first to avoid looking like an idiot, im going to
see if this ppa reseted my brightness to zero or if the settings were
already at zero and because of the brightness problem unaffected until
the ppa install.
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on my dell studio i558 the ppa: ppa:kamalmostafa/linux-kamal-
mjgbacklight and now the laptop starts with contrast all the way down.
has anyone else found this error and is there a workaround?
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The patch / fix ppa:kamalmostafa/linux-kamal-mjgbacklight worked for me!
I have a Gateway NV5913u notebook with Ubuntu 10.10 amd64. The Fn keys
and the power management slider both work, finally I can see without
wearing sunglasses. I had to apply the acpi_backlight=vendor line to
disable the old
I forgot to mention that intel_backlight and dell_backlight appear in
/sys/class/backlight
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Title:
Screen brightness control fails on Dell Studio
@chamilis and others trying building their own kernels-
Yes, substantial modifications were needed to port these patches to the
2.6.35 and 2.6.37 Ubuntu kernels. My source trees are available via the
links in the PATCHES / GIT BRANCHES section of the PPA web page:
@Aditya-
I believe the problem with Sony VAIO brightness keys that you noted in
comment #147 is being tracked as bug 658198, the fix for which was
applied to Ubuntu Maverick (10.10) just yesterday. I expect that you'll
see it fixed by the next Maverick kernel update.
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Thanks Kamal!
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Title:
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I applied ppa:kamalmostafa/linux-kamal-mjgbacklight to my Dell Inspiron
N7010, and it fixed my backlight problem. I didn't have to add any boot
parameters. Thanks!
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I am experiencing same problem on my Sony VAIO VGN-NS328j laptop. When I
press Fn+F5 or Fn+F6 the brightness doesn't get changed. I upgraded from
lucid today. The brightness control was working fine in Lucid. Please
contact me if you need for info or log files.
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Dear Kamal, I'm running Debian Squeeze with a compiled kernel patched with the
.diffs from the link in message number 11. The patches worked fined with
debianized sources installed from repositories (2.6.32).
Now I'm trying to patch kernel 2.6.37 without succes. I'm getting the
debianized
Thank you, thank you, thank you for the brightness fix kernels. I have tried
the vmlinuz-2.6.35-25-generic and the vmlinuz-2.6.37-12-generic and the
/sys/class/backlight/intel_backlight/brightness control works nicely for both.
I went slightly blind looking at the Ultrabright 1080p screen in my
@Kamal
after the last kernel update, I can't control my brightness via
functional keys :)
uname -v -r
2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011
What should I do to get it working back?
Thanks!!!
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Same problem here, same kernel.
2011/1/27 cherep 568...@bugs.launchpad.net
@Kamal
after the last kernel update, I can't control my brightness via
functional keys :)
uname -v -r
2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011
What should I do to get it working back?
@cherep, @Luciano - Your trouble is because you have the maverick-
proposed repository enabled, so you're running the new kernel published
to proposed yesterday (my kernels show kamal in the uname output). My
PPA kernels will ordinarily lag behind maverick-proposed by a day or
two. You can
@Kamal
after updating it works as before! Thanks for your help!
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Title:
Screen brightness control fails on Dell Studio 1558
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For the record, the PPA kernel that I released earlier today contains an
older uname version string than it should. No special action is
needed -- this note is just to prevent careful observers from being
confused by the odd version string. While this is just a cosmetic
error, I have uploaded a
I am not sure if this bug is affecting me, and if I am right to post my
comment here. I am using Ubuntu 10.10 (AMD64) on a HP ENVY 14 with an
Intel i5 CPU (and integrated GPU).
The fn keys (fn+f2 and f3) for controlling the brightness do work.
However, I noticed the following:
1.) Ubuntu did
Does this bug describe the same issue as bug #562005? The other bug
seems to describe the issue as affecting a broader class of users, those
with a particular family of Nvidia mobile chipsets, whereas this bug
talk about a specific family of Dell laptops.
I experience this very issue on my
General info (nothing new)...
My backlight PPA at https://launchpad.net/~kamalmostafa/+archive/linux-
kamal-mjgbacklight provides an experimental brightness control fix for
Ubuntu Maverick (10.10) and Natty (11.04) systems with Intel i915
graphics processors (and possibly Radeon (untested)). The
Hi Kamal, today I upgraded to Ubuntu Maverick 10.10 from 10.04 and then
upgraded from your previous i915bri kernel to this one. I can report
this patch works, but not so well as the former i915bri for Lucid.
My machine is a Toshiba T135-S1310, so it contains an Intel GMA 4500M chip. I
had to add
On my GMA4500 setting brightness to minimum turns off backlight
completely, but with external lighting something can still be seen on a
screen (because the image is still there, even though there is no
backlight). It looks similar to what the reflective cell phone's screen
looks like when it goes
I installed the kernel but on booting,I was greeted with a black screen
after selecting kamals kernel from the boot menu! Thank God I hadn't
removed my previous kernel so i rebooted back into the 2.6.35.23 kernel
and appended the options acpi_osi=Linux acpi_backlight=vendor at the
Hi Kamal,
Me again. This is now weird and somehow embarrassing. This morning I tried
again to set the brightness to 0, and this time I noticed that the screen is
not completely dark. I don't know if yesterday evening I was a bit blind or
what.
Anyhow, definitely with a value of 0 the screen is
Hi Kamal,
Thanks for the new kernel. It's working like a charm!
I still have a question though. With the functions key I am able to set the
brightness to a minimum of 246.
But with $ echo xxx | sudo tee backlight #(the command you recommended in
#113) I am able to go all the way to 0.
Is
@Ombako- Thanks for the feedback.
Regarding the minimum selectable backlight brightness value... One of
the features of the patched gnome-power-manager in the PPA is that it
chooses to limit the minimum brightness value to 5% of the maximum value
for intel_backlight; it specifically doesn't set
Is there an option for Lucid users??
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Title:
Screen brightness control fails on Dell Studio 1558
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@Kamal
I just had a look again. A value of 0 renders a completely black screen. With a
value of 1 I can start seeing shapes.
Most of the time I work with a brightness between 100 and 200. Since the
functions key won't go that far, I use the prompt line. I thought that a
solution to my question
Hi everyone,
It's me again. This issue with not being able to suspend is driving me crazy.
It's really annoying.
Does any one know how to go back to the previous Kamal-kernel version? I tried
forcing a version in synaptic, but no luck. I also tried choosing a previous
kernel at boot time, but
Hi Kamal,
My problem: Brightness keys not reducing the brightness.
I have tried using the fix provided by you through the patches. I am not
able to see it working.
My configuration : Dell Studio 1558 + Ubuntu 10.04.1 LTS \n \l
I see the following messages , when I use my brightness keys , even
I have posted an updated Maverick kernel (version
2.6.35-24.42+kamal2~mjgbacklight1) to my backlight PPA at
https://launchpad.net/~kamalmostafa/+archive/linux-kamal-mjgbacklight to
address the recent regression in functionality reported by some users.
The updated kernel is currently queued up to
Same problem here. After updating to the latest version, I cannot adjust
the brightness with the function keys. I can use however the Power
Manager Brightness Applet, or overwrite the value in
/sys/class/backlight/intel_backlight/backlight and thus I can control
the brightness.
I also checked the
Hi Kamal,
I've just noticed a second side effect of the last update of the kernel.
When I suspend the machine (whether by choosing suspend in the power
menu, or by closing the computer's lid) Ubuntu freezes. I have to press
and hold down the power button in order to turn the machine off.
I am
My backlight PPA at https://launchpad.net/~kamalmostafa/+archive/linux-
kamal-mjgbacklight has been updated with a revised version of the
experimental backlight control patches. The revised patch set may now
also enable backlight brightness controls for Radeon graphics processors
in addition to
I just install the new version and for me stop working at all, i'm using
maverick
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Title:
Screen brightness control fails on Dell Studio 1558
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Updated to new version today and it seems that the function keys have
been disabled, so I have no brightness controls that are easily
available. I can pull it up with the applet, and it still works
otherwise. I am on a Gateway NV59 notebook. I do wonder, also, why the
brightness levels never
Same to me, the brightness control are not avalible, but directly in
gnome power-manager i can move the brightness, i lost the Fn key in
both gnome and kde...
And of course thaks for you're help really thanks...
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@Eduardo and @J. Shaw -
Sorry for the regression...
1. Does booting with the kernel parameter acpi_backlight=vendor fix
it? (see the PPA instructions page)
2. Please post or email me the output from: $ ls /sys/class/backlight
Thanks, -Kamal
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I have already put acpi_backlight=vendor, as I've got intel_backlight,
and the function keys are still not happy after making sure of this and
rebooting for the sake of redundancy.
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I have the same. Proposed updates turned brightness control off!!!
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Title:
Screen brightness control fails on Dell Studio 1558
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@Adi - thanks for pointing that out... Users who have enabled updates
from the 'maverick-proposed' repository, take note: As a general rule,
updates to my PPA will follow updates to maverick-proposed by a few
days.
I have posted an updated Maverick kernel
(2.6.35-24.42+kamal~mjgbacklight1 for
In case you also have enabled the 'proposed' repository, the package from the
wonderful Kamal PPA will be eclipsed by the 2.6.35-24.42 version uploaded a
couple of days ago (07.12.2010) in proposed.
Otherwise Kamalas PPA works like champ.
Cheers,
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** Description changed:
Attempts (on a current Lucid beta) to control the screen brightness on
my Dell Studio 1558 fail with the following errors reported in dmesg:
- [ 1162.236365] ACPI: Failed to switch the brightness
- [ 1162.379144] ACPI: Failed to switch the brightness
- [
@JeanAustinR - In reference to comment #110: No, the brightness issues
have not yet been fixed in the official Ubuntu kernels.
@Bogdan - The inverted behavior is very curious indeed. To help further
diagnose the cause, please run these commands in a terminal window:
$ cd
Dear Kamal, thank you for continuous support and help with this issue.
$ cat max_brightness
368475
$ echo 368475 | sudo tee brightness
368475
The above makes the screen totally black.
$ echo 0 | sudo tee brightness
0
Zero sets the screen to maximal brightness.
$ echo 184000 | sudo tee
Thanks to Kamal Mostafa, my friend's Acer TravelMate 5335 now does
change brightness, however not quite as expected.
Here's the log of my actions:
1. Added PPA, installed new kernel and power-manager.
2. Reboot: got a black (not blank) screen, Fn+arrows did nothing, but I was
able to login
Forgot to mention:
1) I didn't have 'ACPI: Failed to switch the brightness' in dmesg - it just
didn't work silently.
2) Acer TravelMate 5335 comes with 'Intel GMA 4500MHD'
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With Kamal's PPA, the kernel version should be 2.6.35-24 (with
#40+kamal~mjgbacklight1-Ubuntu). But I think this has been fixed by the
latest kernel (official) update. Can someone confirm?
And should this thread be given a more appropriate title?
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@Kamal
thanks i have a Dell14R N4010 and your fix worked for me
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Dear Kamal,
I had installed your fix about a month back and it was excellently until a
couple of days back when I did a sudo apt-get update sudo apt-get upgrade.
I don't remember seeing any kernel related packages in the update.
I am using the Dell Studio 1558 laptop, I still use the
rvgsd, I had the same issue too after updating but had to resort to
reinstalling power management via Kamal's PPA and the Linux packages.
See what kernel version you have by typing uname -a in a Terminal.
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Thanks for the info Jean!
My kernel is: 2.6.35-23-generic-pae #40-Ubuntu SMP Wed Nov 17 22:32:51 UTC 2010
i686 GNU/Linux
How do I reinstall the power management module?
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Sorry! I see what you mean. I wonder how it reverted back to the other
kernel image. Reinstalling now.
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I just updated with the kernel from the PPA from Kamal and we are back to
normal. Thanks a lot.
However, there is something else. One out of 3 or 4 times, when I turn the
computer on I get this weird error.
1. When booting up, the kernel ring buffer is printed out on the screen. This
usually
Great, so I am not the only one with the crazy fan speed problem. But
when it happens, everything else is working, just the noise...
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I'd like to add: The crazy fan problem also happens randomly to me, I
don't know when or why, it's like a crazy surprise :P
@Kamal, would you mind throwing us a 2.6.36 Kernel?!
Thanks
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You received
I have posted an updated Maverick kernel
(2.6.35-24.40+kamal~mjgbacklight1 for Ubuntu 10.10) in my PPA
https://launchpad.net/~kamalmostafa/+archive/linux-kamal-mjgbacklight .
Users who have installed the PPA already don't need to take any special
action -- your system's Update Manager will take
@Tito, @ombako
I have exactly the same issue with crazy fan speed on my Lenovo z360. But if
I remember it right, it started going crazy since I had switched from 10.04 to
10.10 (this patch wasn't installed). I guess it is not related to the
brightness control patch. Correct me if I'm wrong!!!
Hi Kamal
After updating the kernel (to 2.6.35-23-generic x86_64) minutes ago and
restarting the system, I lost control over brightness again. It worked
with no problems for over a month, but I'm needing sunglasses again! ;-)
I'm running Ubuntu 10.10 64 bits in a Lenovo z360.
Any ideas or tipps?
Hi Kamal
I have the same problem of Omar. Kernel updates and I lost the backlight
control. I downloaded the packages
linux-image-2.6.35-23-generic_2.6.35-23.36+kamal~mjgbacklight1_amd64.deb
linux-headers-2.6.35-23-generic_2.6.35-23.36+kamal~mjgbacklight1_amd64.deb
Hi Kamal
I just remove the packages linux-image and linux-headers from my system
(version 2.6.35-23.40) then I installed your packages
linux-image-2.6.35-23-generic_2.6.35-23.36+kamal~mjgbacklight1_amd64.deb
linux-headers-2.6.35-23-generic_2.6.35-23.36+kamal~mjgbacklight1_amd64.deb
Hi Kamal
I just remove the packages linux-image and linux-headers from my system
(version 2.6.35-23.40) then I installed your packages
linux-image-2.6.35-23-generic_2.6.35-23.36+kamal~mjgbacklight1_amd64.deb
linux-headers-2.6.35-23-generic_2.6.35-23.36+kamal~mjgbacklight1_amd64.deb
An update to the PPA is on the way folks -- build is in progress -- I'll
announce when its available.
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Kamal, are you planning to continue patching the Lucid kernels (2.6.32
series)?
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It works great in gnome but i kde it's not working...
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By the way i have Ubuntu Maverick with kde 4.5, it's weird because in
gnome works great, could be a kde problem?
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worked great for me on dell studio 15 with i5. Will it be a part of
kernal 2.6.36? I really wish 2.6.36 will fix the backlight, wireless and
hibernation, all three issues.
Thanks for your work!!
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You
Working fine on my HP Pavilion DV3 2155mx.
I needed to add the acpi_backlight=vendor boot parameter.
As reported in comment #87, the gnome brightness panel does not work but
the function keys work perfectly.
Thanks, Kamal! You've fixed an issue that I've had since I first tried
Ubuntu on this
Hi, Kamal. I wanted to let you know that your fix also worked for me
with my Dell Studio 1458 with an i5 and integrated graphics for Kubuntu
10.04.
And good news for Kubuntu 10.10! It recognized all of my Fn keys out of
the box!
And bad news for Kubuntu 10.10! After the first suspend/wake-up
Working on my Lenovo Ideapad U350.
lspci
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
Needed both boot
worked great for my Dell Inspiron 17R. Thanks!
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I have posted a minor update to the kernel and gnome-power-manager
packages in my PPA https://launchpad.net/~kamalmostafa/+archive/linux-
kamal-mjgbacklight . Users who have installed the PPA already don't
need to take any special action -- your system's Update Manager will
take care of upgrading
This works great on Acer Aspire 5740! acpi_backlight=vendor kernel
parameter is needed.
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At last the problem with LCD Screen brightness comes to an end.
I had the same problem with my Notebook Acer Aspire 5740, core i5 + Ubuntu
10.10 series
Now this got fixed permanently with adding the PPAs of Kamal Mostafa and Grub
acpi_backlight=vendor.
All you need is to add PPA from Kamal's
At last the problem with LCD Screen brightness comes to an end.
I had the same problem with my Notebook Acer Aspire 5740, core i5 + Ubuntu
10.10 series
Now this got fixed permanently with adding the PPAs of Kamal Mostafa and Grub
acpi_backlight=vendor.
All you need is to add PPA from Kamal's
At last the problem with LCD Screen brightness comes to an end.
I had the same problem with my Notebook Acer Aspire 5740, core i5 + Ubuntu
10.10 series
Now this got fixed permanently with adding the PPAs of Kamal Mostafa and Grub
acpi_backlight=vendor.
All you need is to add PPA from Kamal's
At last the problem with LCD Screen brightness comes to an end.
I had the same problem with my Notebook Acer Aspire 5740, core i5 + Ubuntu
10.10 series
Now this got fixed permanently with adding the PPAs of Kamal Mostafa and Grub
acpi_backlight=vendor.
All you need is to add PPA from Kamal's
** Project changed: dell = null
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This works just perfect on my Acer 5810T (Timeline series), Masha'Allah!
I still have to disable acpi_video0 by acpi_backlight=vendor, even though
acpi_video0 has disappeared from /sys/class/backlight. There's acer-wmi in its
place now and I didn't try disabling that when I don't have to.
Even though we know that the linux-kamal-mjgbacklight PPA kernel does
work to enable brightness controls on many different models, lets leave
the title of this bug as it was originally reported and not add any
additional models to it. The reason being that if we keep adding
additional models, we
** Summary changed:
- Screen brightness control fails on Dell Studio 1558
+ Screen brightness control fails on Dell Studio 1558, Lenovo Ideapad Z360
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I have installed Kamal's fixed kernel from:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/568611/comments/55
Just installing the kernel doesn't make any effect.
During GRUB, after editing the 'linux...' line and appending
'acpi_backlight=vendor' the backlight works as expected.
THANKS
To always add acpi_backlight=vendor to your kernel, edit the
/etc/default/grub file by running:
gksu gedit /etc/default/grub
and edit the following line:
GRUB_CMDLINE_LINUX_DEFAULT=quiet splash
into:
GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_backlight=vendor
Save, and run:
sudo
UbuntuForums.org thread discussing this problem:
http://art.ubuntuforums.org/showthread.php?t=1503569
I have a Lenovo IdeaPad Z360 and also having this problem.
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Thank You Very Much! Works on my Dell Studio 1558.
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Screen brightness control fails on Dell Studio 1558
https://bugs.launchpad.net/bugs/568611
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It's now working! Just like what I thought, I missed something.
Thank you very much, Kamal!
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Screen brightness control fails on Dell Studio 1558
https://bugs.launchpad.net/bugs/568611
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
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Adding acpi_backlight=vendor in my grub.cfg does not fix it. After a
restart, the screen brightness still does not respond. Full birghtness
and it's hurting my eyes. Grrr!
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Screen brightness control fails on Dell Studio 1558
https://bugs.launchpad.net/bugs/568611
You received this bug
Uff!! Finally works!!! after kernel update.. Also i need to add
acpi_backlight=vendor.
Model - Gateway ID49 ... Thks!!!
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Screen brightness control fails on Dell Studio 1558
https://bugs.launchpad.net/bugs/568611
You received this bug notification because you are a member of Ubuntu
Bugs, which
Finally brightness works for laptop with this kernel .. But I need to
append acpi_backlight=vendor
Model -- Gateway NV5927U
Thank you ...
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Screen brightness control fails on Dell Studio 1558
https://bugs.launchpad.net/bugs/568611
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