This is happening on my Lenovo T510 which uses Nvidia so I don't think
the video driver has anything to do with it. This bug (for me) is also
the worst kind in that it's intermittent. Tonight, the system locked up
when I forgot about this problem and it hosed a partition that was in
the middle of b
The problem persists in 14.04. The solution in comment #96 still does
not resolve the issue for me.
I can confirm Rahul's observation in #116. Adjusting the brightness
before the kernel loads works. Adjusting after that freezes the system.
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I believe I have successfully solved the bug now by reading all the
comments again and found a solution in #96. I added
echo 0 >/proc/sys/kernel/nmi_watchdog
before "exit 0" in the file etc/rc.local. I have used the system a few
hours/days/re-starts/hibernates since and no bug has occured by now.
one workaround i been using for quite sometime now, is to decrease the
backlight before the kernel boots.
i.e. the system waits on grub bootloader for 5-10 seconds for any
distribution i used. dimming the display then bypasses this issue... :)
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Hey, is there any chance this is going to be resolved soon? My system
(Ubuntu Studio 10.04) basically renders itself more and more useless
everyday and I can't upgrade because of this bug. I tried
- Ubuntu 12.04
- Linux Mint 13 and Linux Mint 15 (both Cinnamon)
- Fedora 20
- Ubuntu Studio 12.04
-
** Also affects: fedora
Importance: Undecided
Status: New
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Title:
brightness adjusting crashes system
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Dear George, I am quite sure, this does not fix the problem. I
investigated this in deep now, let me elaborate on this. At first I
forgot to mention, my system is entirely a 64bit one, may be this is
importand. Secondly, I have only one AMD/ATI HD4500 card build into my
notebook as a graphincs card
Unfortunately, the solution that worked for George does not work on my Lenovo
ThinkPad W530, running Ubuntu 13.10.
After trying to adjust brightness, I see the brightness graphic on the screen,
and the system freezes immediately.
This laptop has NVidia - Intel hybrid graphics, so the bug is likel
I've managed to get this bug solved!
The answer is here:
http://ubuntuforums.org/showthread.php?t=2181534&p=12819813#post12819813
Create the file /usr/share/X11/xorg.conf.d/20-intel.conf with the
following content:
Section "Device"
Identifier "card0"
Driver "in
I've managed to get this bug solved!
The answer is here:
http://ubuntuforums.org/showthread.php?t=2181534&p=12819813#post12819813
Create the file /usr/share/X11/xorg.conf.d/20-intel.conf with the
following content:
Section "Device"
Identifier "card0"
Driver "intel"
Hello to you all!
I am showing up here because I have the same issue. I found this thread this
morning after blaming the hardware on my notebook for a year but rethinking
this to be a software issue this morning. I will try out the solutions here to
contribute on this this evening.
Please, how
I've read comment #96 and now I know what echo 0 >/proc/sys/kernel/nmi_watchdog
does.
Still, it didn't work for me.
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Title:
brightness adj
I have Dell Integrated Graphics Card and don't understand what echo 0
>/proc/sys/kernel/nmi_watchdogdoes.
I'm really fed up with this bug.
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Ti
I fresh installed Ubuntu 13.10, so it was using free drivers by default. And it
crashed when I tried to change brightness rapidly. So I think the bug is not
present in fglrx-installer. Now I am using AMD drivers, but my brightness
control doesn't work properly, it either increases or decreases a
Still no luck for me on Dell N5010, running Kubuntu 13.10:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=legacy"
didn't work...
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Tit
Adding "acpi_backlight=legacy" fixed it for me under Ubuntu 13.10. (Dell
N5010, IntelHD)
'gksu gedit /etc/default/grub'
add "acpi_backlight=legacy" to GRUB_CMDLINE_LINUX_DEFAULT="quiet
splash" line so it'll look like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=legacy"
sa
I never had this bug until yesterday. "acpi_backlight=vendor" and/or the
"echo 0 >/proc/sys/kernel/nmi_watchdog" solution didn't work for me. I
couldn't install the latest mainline kernel, because of my restricted
broadcom WiFi driver I'm depending on.
Workaround for me was: Disable Virtualization
Hi,
> On Fri, Aug 23, 2013 at 04:09:46PM -, Aditya wrote:
>> Hi,
>> by different I mean that the system freezes in both the situations, with
>> nmi_watchdog enabled and disabled, and this happens as soon as I soon as I
>> change the brightness levels, and this is the reason I actually reache
Marwan, your workaround did in fact fix the problem for me.
I'll add that when I tried your workaround (echo 0
>/proc/sys/kernel/nmi_watchdog), I REMOVED acpi_backlight=vendor (which
I already had) at the same time. I rebooted and both problems were
fixed: I could change the backlight using my key
On Fri, Aug 23, 2013 at 04:09:46PM -, Aditya wrote:
> Hi,
> by different I mean that the system freezes in both the situations, with
> nmi_watchdog enabled and disabled, and this happens as soon as I soon as I
> change the brightness levels, and this is the reason I actually reached this
> b
Hi,
by different I mean that the system freezes in both the situations, with
nmi_watchdog enabled and disabled, and this happens as soon as I soon as I
change the brightness levels, and this is the reason I actually reached this
bug report.
Thanks,
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On Fri, Aug 23, 2013 at 09:05:34AM -, Aditya wrote:
> Thanks Marwan for the detailed description of the bug.
You're welcome.
> I just posted this as a fix for the users who were unable to change
brightness, and I had no idea how deep the roots of this bug are.
And, I don't blame you. I just
Thanks Marwan for the detailed description of the bug.
I just posted this as a fix for the users who were unable to change brightness,
and I had no idea how deep the roots of this bug are.
In my case, both acpi_video0 and acpi_video1 do not work, i.e. the brightness
does not change and the syste
On Thu, Aug 22, 2013 at 06:10:50PM -, Aditya wrote:
> May be the community is looking for the solution in the wrong direction.
Well, I will elaborate on this bug once and for all.
First of all, we can't blame the Linux kernel for this bug, because it is
firmware-specific.
"firmware-specific
May be the community is looking for the solution in the wrong direction.
Looking in /sys/class/backlight/ lists 3 folders on my Dell inspiron 7520.
One of the folders is intel_backlight .
Manually doing
root@Sirius:~# echo 2000 > /sys/class/backlight/intel_backlight/brightness
works.
This means
This is an update to my post No.93... Not a single time i have have faced any
problem with the brigtness button :
after SPARX No.17 comment ( sorry for saying that it was Marwans)
This bug is FIXED for me by adding these kernel options:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force
ac
I am using debian wheezy... Cannot find a better discussion on this
"Brightness Bug" in the whole world awesome effort here..
I have Dell Inspiron N5010 , Core i3, 4 GB RAM AND INTEL HD
After updating to 3.2.xx the system starts hanging when the brightness
was adjusted. I googled and found th
For those of you using Inspiron:
Marwan's solution worked for me.
I'm using 'GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force acpi=off"'
in my /etc/default/grub file.
and I've added 'echo 0 >/proc/sys/kernel/nmi_watchdog' to my /etc/rc.local file.
(Thanks, man!)
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On Sun, Jun 23, 2013 at 04:59:03AM -, Savio wrote:
> Thats help, but adding this line in /etc/rc.local before exit 0 statement
> making brigthness hotkey unusable.
This couldn't be caused by disabling nmi_watchdog; this is totally
unrelated.
My guess is that you've booted the system with acp
Thats help, but adding this line in /etc/rc.local before exit 0 statement
making brigthness hotkey unusable.
I need to change from setting.
will adding this
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "Backlight" "intel_
On Sat, Jun 22, 2013 at 11:07:27PM -, Savio wrote:
> I have Dell inspiron with Intel core I3 and Intel HD graphics with ubuntu.
> 13.04 .
> I tried setting acpi_backlight=vendor but no help
> but setting acpi = off works but no touchpad support
You can eliminate this problem for now, by putti
** Bug watch added: Linux Kernel Bug Tracker #57571
http://bugzilla.kernel.org/show_bug.cgi?id=57571
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Title:
brightness adjusting crashes syst
On Sat, Jun 22, 2013 at 11:07:27PM -, Savio wrote:
> I have Dell inspiron with Intel core I3 and Intel HD graphics with ubuntu.
> 13.04 .
> I tried setting acpi_backlight=vendor but no help
> but setting acpi = off works but no touchpad support
>
> setting brightness manually in /sys/class/ba
I have Dell inspiron with Intel core I3 and Intel HD graphics with ubuntu.
13.04 .
I tried setting acpi_backlight=vendor but no help
but setting acpi = off works but no touchpad support
setting brightness manually in /sys/class/backlight/dell_ brightness/
current* to 1 works and also changing thi
I still have this problem with 3.8.0-19-generic #30-Ubuntu SMP Wed May 1
16:35:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
with intel graphics HD4000.
When I first boot, changing brightness is fine. But after a period of
time, it will hang if I adjust the brightness.
Similarly, when I first boo
Why is this bug still in "Unassigned state"...?
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Title:
brightness adjusting crashes system
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Unfortunately the issue is back on Xubuntu 13.04, Dell Inspiron 5010,
Intel Graphics.
Temporarily try this brightness adjuster:
http://www.omgubuntu.co.uk/2013/04/brightness-control-ubuntu
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I am still having this problem even after adding 'acpi_backlight=vendor' to
grub cmd option, but now crash occurs less often.
This problem also occurs when brightness changes due to power on/off. In this
case(when frozen) if I remove or plug-in charger, brightness level changes but
nothing else
Hi,
I think adding 'acpi_backlight=vendor' to grub cmd option fix problem
for only Intel graphics cards, for other GPU this bug is still present.
This is very serious one. As this affects linux usability and stability.
Regards,
Savio
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As with others that have an ATI graphics card, the solution in #71 does
NOT work for me either I'm afraid. Can't wait for some sort of aolution
to this; it's a real pain! Occasionally it even seems to hit when my
computers monitor turns off/on after being left..
uname -a:
Linux james-laptop 3.5.0-
Adding 'acpi_backlight=vendor' to the GRUB_CMDLINE_LINUX_DEFAULT options
in /etc/default/grub (comment #71) also worked for me. 'quiet splash'
and 'pcie_aspm=force' options shouldn't be necessary in this situation
(though 'quiet splash' is added by default). Also, as a general rule,
you should che
SPARX's solution seems to have worked for me as well (comment #71).
$uname -a
Linux Inspiron-N5010 3.5.0-22-generic #34-Ubuntu SMP Tue Jan 8 21:41:11 UTC
2013 i686 i686 i686 GNU/Linux
Thanks for the work around!
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Brilliant work by SPARX there..!! After being frustrated by this problem
for months, i can confirm too that the solution in 71 works
I had this earlier but the problem still existed.
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Looks like adding the pcie_aspm=force is the key
It seems "acpi_backlight=vendor" grub mod works!!! #71
THANK YOU SPARX!
Dell Inspiron N5010 (Intel Graphics)
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Title:
brightness adjusting crashe
I have the same issue on a Dell Inspiron M5010.
The workaround in comment #71 works for me too. pcie_aspm=force is
irrelevant here, though. acpi_backlight is the one that did the trick.
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Hi,
The bug reproduces on my Dell Inspiron 1564 also and the workaround in
Comment #71 is not working (ATI HD 5470 video card). Let me know if
there's anything I can help you with in fixing this.
Thanks,
Laur.
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Sorry guys, but even this workaround is not working for my system... :(
Still doing the brightness changes for 5-10 times the system crashes...The
issue is with the graphics card of the system...ATI HD 5470...
Ati truly sucks big time
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I can also confirm that the workaround in Comment #71 fixes this bug,
even if you increase and decrease brightness very aggressively. Thank
you very much SPARX!
Hopefully this can now be fixed without the need for this workaround,
but this will do for now.
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I can confirm that my system does not freeze after using the workaround
in Comment #71. I will post on the upstream bug also.
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Title:
brightness
This bug affects me too:
Linux dell 3.5.0-21-generic #32-Ubuntu SMP Tue Dec 11 18:51:59 UTC 2012 x86_64
x86_64 x86_64 GNU/Linux
dell studio 1558
After months of hating ubuntu on this machine:
This bug is FIXED for me by adding these kernel options:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: fglrx-installer (Ubuntu)
Status: New => Confirmed
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Tit
There is no fix for this bug as of yet. I removed the link to upstream
bug https://bugzilla.kernel.org/show_bug.cgi?id=15895 . That bug is for
the i915 driver and this bug is for fglrx.
Adding a fglrx task for review.
** Also affects: fglrx-installer (Ubuntu)
Importance: Undecided
St
Has the bug been solved in linux... @Joseph Salisbury, what needs to be
done to apply the patch, normal update or something else?
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Title:
brightn
** No longer affects: linux
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brightness adjusting crashes system
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I'd just like to chime in and say this bug affects me too.
I have a dell studio 1558 with a core i5 M450 and radeon HD 5400 (ish),
and run ubuntu 12.10, but also had the same issue on 12.04. The problem
never affected me prior to upgrading to 12.04. In addition, my computer
sometimes freezes on st
** Changed in: linux
Status: In Progress => Incomplete
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brightness adjusting crashes system
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Been affected by this for several months now with no good solution in
sight. It also crashes when i use the change brightness option in the
user preferences. And of course it happens when i use the shortcut keys
to change brightness provided on the laptop. I have a dell inspiron and
the 64-bit vers
This bug affects me too. I use a Dell Inspiron n5010 Core i3 Integrated
Graphics, running ubuntu 12.10. It happens since 12.04.
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Title:
brightnes
Hi,
a month ago i have installed custom kernel from this thread at Polish ubuntu
forum:
http://ubuntu.pl/forum/viewtopic.php?f=216&t=160361
Months of use, and i have no more crashes and no more rainbow on brightness
change. The problem is in generic kernel.
The only problem is that the system bo
This bug still persists in Ubuntu 12.10 for me, and it seems to be
common amongst Dell Studio 1558 users.
uname - a:
Linux ciaran-Studio-1558 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9
19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Intel core i3 370m
AMD Radeon HD5470
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I am having the same problem, i have Dell inspiron 1464 and i noticed
this problem in 12.04 and hoped it will fix in 12.10 but still the same
problem. I have installed 64 bit version of ubuntu and it has ATI
graphics card.
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B
Hello,
I have been an Ubuntu user for the past 4 years but since the launch of
ubuntu 12.04 and this bug on my Dell Studio 1558...i have to log into
windows...
If I change the screen brightness continuously a few times, the screen freezes
and computer does not respond...
I have tried Kubuntu 12.
Hello,
I am affected by this bug too. I upgraded my Dell Studio from 10.04 to
12.04.1 and found this exact same issue while changing brightness.
Kernel that I am using -> 3.2.0-31-generic (64-bit).
$ uname -a
Linux neo 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:16:45 UTC 2012 x86_64
x86_64
** Tags removed: kernel-key
** Tags added: kernel-da-key
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Title:
brightness adjusting crashes system
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Sorry for my english.
I`m affected with this bug too. First time i saw it on debian wheezy with
kernel 3.0.
Dell Studio 1558 corei3 m350 ati 5470HD
I don`t change manually brightnes at startup i have set up xbacklight.
sometimes my laptop chrash at startup. It is randomly and very annoying.
I us
I gave up. Really. Lots of kernel versions, and none of them have fixed
this bug. I'm returning to Windows. I have been using only Linux since
1999 and I am pretty disapointed on how things are now. Fedora, Ubuntu,
Mint, every distro that uses this 3.x kernel have the same problem,
which is a very
I have the same bug:
$ uname -a
Linux Inspiron-N5010 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux
Thanks in advance
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** Changed in: linux
Status: Incomplete => In Progress
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brightness adjusting crashes system
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Hi!! Here reporting the same issue!! I have a Samsung RV420. I though
that this problem have to do with the model, but NO! It's kernel's
fault, so here I am, if someone need some log, just tell me!!
$ uname -a
Linux Paca 3.2.0-29-generic-pae #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012
i686 i686 i
Must have been a lucky boot! Today the bug crashed my system again.
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brightness adjusting crashes system
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For the record, I'm running the 64-bit version of Ubuntu
(3.2.0-29-generic, x86_64), maybe the problems only occurs with the 64
bit version. I've quickly searched on Google how to switch kernels to
32-bit, but it looks like that's not an easy thing to do.
Is there anybody experiencing this bug on
Strange, but i think i am not longer affected by this bug.
$ uname -a
Linux karlis-Studio 3.2.0-29-generic-pae #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC
2012 i686 i686 i386 GNU/Linux
Was not having a crash for some time now and wanted to test - so i
changed the brightness for about 40-60 seconds an
If nobody else tests this, I'll test this within a few days. As for
hardware details, I'm running a Dell Inspiron N5010 with an up-to-date
Ubuntu 12.04.
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This bug is marked as affecting 7 other people. Can other folks
affected by this bug post their hardware details?
Also v3.6-rc2[0] of the mainline kernel is now available. Would it be
possible to test that kernel and report back if it has the bug or not?
Thanks in advance!
[0] http://kernel.ub
I'm experiencing this issue on my Dell Inspiron-N5010 + Ubuntu 12.04.
The system just hangs (no colorful screen for me) beyond REISUB
resetting. It happens whether I use the function keys on the laptop or
the brightness manager of the system.
If I can contribute with a log or something, please let
I can confirm the 3.6 kernel does not fix the problem, though I didn't
have any of the other problems described in post #48.
Instead of the current Ubuntu 12.10 live DVD, the screen doesn't freeze,
but shows the behaviour in the video previously posted. It also seemed
as if a more 'agressive' chan
Thanks, Joseph. The 3.6 kernel didn't fix the problem for me.
$uname -a
Linux umang-laptop 3.6.0-030600rc1-generic #201208022056 SMP Fri Aug 3 01:04:00
UTC 2012 i686 i686 i386 GNU/Linux
In addition to being a little slower to boot, the kernel also may have
done something to the hardware. After t
@Umang,
Yes, the link posted in comment #45 is safe to install on Precise.
After power on, you can hold the shift key to access the GRUB menu.
That will allow you to boot back into your prior kernel and remove the
v3.6-rc1 kernel after testing.
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Thanks, Joseph. Are there binary packages available for precise? Is it
(somewhat) safe to install version 3.6 on precise using the packages for
quantal?
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The v3.6-rc1[0] kernel is now available. Can you test that kernel and
report back if the bug still exists?
Thanks in advance!
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-rc1-quantal/
** Tags added: kernel-key
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Could you post on the kernel bug asking them to change its status from
NEEDINFO? I don't want to seem obnoxious as the last comment is by me
I hit the button once this morning and it completely froze.
Unfortunately I'm helpless and I have to try and deal with the freeze
every two days, since my l
Today's live dvd build for Ubuntu 12.10 (Quantal Quetzal) still has this
bug, although it does seem as if you have to do a little more than just
increasing and decreasing the brightness (you have to increase and
decrease it rapidly, kind of agressively), but maybe it just seems that
way to me.
I d
There has been no activity on the kernel bug for a long time now. Is
there anything we can do to draw attention to this bug? I have stopped
changing the brightness on my rather bright screen and this is not a
nice bug to live with.
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** Changed in: linux
Status: Unknown => Incomplete
** Changed in: linux
Importance: Unknown => Medium
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Title:
brightness adjusting cra
I verified that the problem exists on 3.4 mainstream build and commented
on an existing bug upstream
(https://bugzilla.kernel.org/show_bug.cgi?id=15895). If you feel as
though you have any other useful information to add, please do so.
** Bug watch added: Linux Kernel Bug Tracker #15895
http://
This issue appears to be an upstream bug, since you tested the latest
upstream kernel. Would it be possible for you to open an upstream bug
report at bugzilla.kernel.org [1]? That will allow the upstream
Developers to examine the issue, and may provide a quicker resolution to
the bug.
If you are
** Package changed: xorg (Ubuntu) => linux (Ubuntu)
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brightness adjusting crashes system
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Tested kernels 3.4 and 3.5-rc3 and both of them had the same bug.
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brightness adjusting crashes system
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>From Elco's response it looks as though this issue is not fixed in the
mainline build. Therefore, changing to confirmed and tagging kernel-bug-
exists-upstream as Joseph said.
** Changed in: xorg (Ubuntu)
Status: Incomplete => Confirmed
** Tags removed: needs-upstream-testing
** Tags adde
I retested the Ubuntu 12.10 daily live version today, and unfortunately
the bug does still exist in kernel 3.5. I'm not sure if I tested it
wrong the first time (it seems to matter how fast you try to increase or
decrease the brightness) or if this is a regression. The screen doesn't
show the behav
Alright, I installed the -all, image-amd64 and headers-amd64 from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/ (if I
understand correctly, 3.4 the latest stable release of the kernel for
precise).
Unfortunately it did not work. The 3.4 kernel was succesfully installed
(I guess, sinc
try with the precise kernels installing -all.deb, image and header for your
architecture and pae if ram<2Gb nad let us know
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If I run the Ubuntu 12.10 (Quantal Quetzal) daily live image from USB,
brightness fuctions normally again, so it would seem the kernel
currently used in 12.10 has fixed this issue. Any way to get it fixed in
12.04 too?
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I'm having the same problem the video is showing.
Has the kernel-update being refered to in #32 already landed? If not,
will this happen automatically or do I really have to manually install
it? I'm asking because I'm not sure if I'm technically skilled enough to
start messing with kernels. Then a
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.4kernel[1] (Not a kernel in the daily directory) and install both the
linux-image and linux-image-extra .deb packages.
Once you've tested the upstream
confirmed from screencast
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** Changed in: xorg (Ubuntu)
Status: Incomplete => Confirmed
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apport information
** Tags added: apport-collected ubuntu
** Description changed:
When adjusting my laptops brightness the system crashes.
what logs do in need to add and how to get them?
System:
-- Dell Studio 1558
-- Ubuntu 12.04
Video showing the process: http://www.youtu
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=649346
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** Package changed: linux (Ubuntu) => xorg (Ubuntu)
** Bug watch added: Debian Bug tracker #649346
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=649346
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** Attachment added: "kern.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1007765/+attachment/3174590/+files/kern.log
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https://bugs.launchpad.net/bugs/1007765
Title:
brig
** Attachment added: "Xorg.0.log.old"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1007765/+attachment/3174589/+files/Xorg.0.log.old
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