Chris Triantafillis, thank you for reporting this and helping make Ubuntu
better. Natty reached EOL on October 28, 2012.
Please see this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases
We were wondering if this is still an issue in a supported release? If
so, co
** This bug is no longer a duplicate of bug 740893
Kernel 2.6.38-7 completely dims screen on Intel GMA 4500M
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Title:
N
*** This bug is a duplicate of bug 740893 ***
https://bugs.launchpad.net/bugs/740893
** This bug has been marked a duplicate of bug 740893
Kernel 2.6.38-7 completely dims screen on Intel GMA 4500M
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also one solution, the one i am using is to add the "sudo setpci -s 00:02.0
F4.B=00" to crontab
so in a terminal type:
sudo crontab -e
and then add those two lines
@reboot sudo setpci -s 00:02.0 F4.B=00
1-59 * * * * sudo setpci -s 00:02.0 F4.B=00
and you are ok!
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ok just closed over and opened up and its all good.
there's still some glitchyness like little pixelated bits stuck on overlay on
my screen but i think thats cos i use avant-window-navigator, docky and cairo
dock. yes i know, OTT. but thats what ubuntu is all about right? anyway..thanks
for the
I have had this issue and its been doing my head in. made ubuntu look
bad, yknow?
I'm on 11.04(natty);
anyway, here's this:
[bash]
billy@UnKn0wN:~$ uname -a
Linux UnKn0wN 2.6.38-13-generic #53+kamal4~mjgbacklight5-Ubuntu SMP Tue Dec 6
01:45:53 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
[bash]
aft
I have prepared a PPA test kernel for Ubuntu 11.10 (Oneiric) including a
patch which might address the "inverted backlight brightness" or
"backlight off at startup" problems, for laptops with a Intel GPU's
only:
https://launchpad.net/~kamalmostafa/+archive/inverted-backlight
Feedback to this
this bug affects the 11.10, to fix it, we need to change the
/etc/defaut/grub in the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
change to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux
acpi_backlight=vendor"
This issue affects Ubuntu 10.10, 11.04 and 11.10
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Confirmed
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can i use this kernel for kubuntu?
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
To manage notifications abou
I just used the manager to update to 2.6.38-9-generic
#43+kamal~mjgbacklight4-Ubuntu and the brightness works much better.
The login panel remains dark. Once in your session, the amount of backligth
evolves contrary to what the popup display indicates and i've experienced
sudden changes of brightne
wrong, #11
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
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see #9 and #10
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
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Hi again, same thing with Natty. It's like the PPA doesn't get installed. I
am probably missing something:
$ sudo add-apt-repository ppa:kamalmostafa/linux-kamal-mjgbacklight
$ sudo apt-get update
Is that it? I guess not!
(Thanks for the setpci command, it makes Natty functional for me through
That's it, on 10.10 I can see well but there's no reaction to hotkeys
(snapshots attached).
Going to try blind typing on 11.04, install Kamal's kernel and let you know.
On Tue, May 3, 2011 at 3:50 PM, Wolfgang Kufner
wrote:
> Things people use on black screens:
> external monitor
> blind typing o
Things people use on black screens:
external monitor
blind typing of sudo setpci -s 00:02.0 F4.B=a1 (a1 is just an example
hex value for the brightness) on a terminal window called up with
ctrl+alt+T
flashlight
just plain hard staring under certain lighting conditions
So now it boots up with a bri
Hi again, things are back to normal on 10.10 after a new reboot. Kamal's PPA
is still here but brightness won't vary with the Fn commands.
I'll try to install it on Natty as soon as I fetch a flashlight and let you
know what happens.
Thx
On Mon, May 2, 2011 at 11:25 PM, Néstor wrote:
> Hi all,
Hi all, sorry for the news, but I just tried Kamal's PPA on 10.10 and after
reboot I got a totally black screen as a result (gulp!). I'm in the
failsafeX mode from the recovery mode right now. Hope to find a way to undo
the PPA.
Maybe I should've tried directly on 11.04? I'll try doing so despite
Is happening almost 2-3 minutes and its like pressing the hotkeys one
down and then one up!
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Title:
No brightness on LCD
Great. Still, how often is this brightness reduction happening and by
how much is brightness reduced?
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Title:
No brightne
Yes it fixes the bug! sometimes the brightness is reduced for less than
one second and then back again, it isn't something important!
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@PetaZeta
Sounds like my situation (bug 518002) except that mine still comes up
bright while some others like yours come up dark with the newer kernel.
Have you tried Kamal's patched kernel (see comment 9)? The patched
kernel also comes for 10.10 so you can try it there, too.
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Thanks Chris. So the patched kernel fixes this bug, right?
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
Just in case it helps, i also upgraded my Acer Aspire 5732Z to 11.04 from 10.10
and got the same dim, almost black screen. The first time i entered in recovery
mode, brightness was OK, but only that first time.
Rolling back to 10.10 I've realized that brightness control (Fn + left
|| right arrow
after the second time i boot into the patched kernel sometimes the
brightness was on and others it didn't! if i move the mouse now the
brightness doesn't go off! and i use the hotkeys to change the
brightness! i did't test the hotkeys after a suspend because i never put
my pc in suspend...i hope i
By "the other" you mean the 2.6.39 kernel? That was only good for
testing whether the bug still exists in the newest kernel version. Yes,
you can uninstall it.
So the patched one works for you? I think I did misunderstand your
comment about the mouse move. Please clarify: It comes up bright when
y
Kernel issue, see this bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/740893
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Title:
No brightness on LCD moni
it's ok to unistall the other kernel and keep the patched one?
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
update: i use the command to fix the brightness and after a while i move
the mouse and black again!
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Title:
No brightness
Can you confirm (e.g. with uname -a on a terminal) that you really
booted into the patched kernel 2.6.38-9.43+kamal~mjgbacklight4. If you
did not select the kernel at boot time (hold shift to get a grub menu
to select) you might have booted into the 2.6.39 kernel from the
previous test.
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You re
yes till the first mouse move...the backlight hotkeys worki can
bring it back with setpci...its ok for me to close the lid and after
xset dpms force off, press a key is enough, brightness comes back!
ouput:
uname -a
Linux chris-Aspire-5732Z 2.6.38-9-generic #43+kamal~mjgbacklight4-Ubuntu SMP
I just found out myself that the patched kernel comes with a nasty
drawback. My backlight comes up fine and I can control the brightness
just fine until I close the lid. After reopening it stays black no
matter what I do, including setpci.
Your symptoms sound different, however. How long does it w
i boot into the patched kernel and the brightness was alright but when i
move the mouse the screen become black again
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** Tags added: backlight
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
__
still nothing
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
_
I have just found a fix for my system. Add this ppa:
https://launchpad.net/~kamalmostafa/+archive/linux-kamal-mjgbacklight
to your sources e.g. with:
sudo apt-add-repository ppa:kamalmostafa/linux-kamal-mjgbacklight
then reload the package information and upgrade your system (e.g. with synaptic)
T
i have installed the new kernel but still no brightness...
blind stepsopen dash, then terminal and then the command...
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Ok. So it works with the 2.6.35 kernel from maverick but not with the
2.6.38 kernel from natty. There is a good chance that it will work with
the 2.6.39 kernel.
How did you manage to try the setpci command on natty with a dark
screen?
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i will try it and tell you the results...
i was from live usb of 10.10 because with 11.04 i could't see a thing!
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Title:
Anyway, please test whether it is fixed in the newest kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.39-rc4-natty/ . You
need the 2 *i386.deb and the *all.deb. Download and install with sudo
dpkg -i ... from a terminal.
Also, I wonder why your attached BootDmesg.txt shows you runni
** Package changed: xorg (Ubuntu) => xserver-xorg-video-intel (Ubuntu)
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Title:
No brightness on LCD monitor (Acer Aspire
its not working!any other idea?
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
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Mai
workaround 2 works fine...but every time i open my computer i must run this
command...
so i will put it in startup programs and see if that will work!
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Try the workarounds described in bug 518002. Let us know how it goes.
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
_
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Title:
No brightness on LCD monitor (Acer Aspire 5732Z)
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