Hi! No, updating the BIOS didn't change anything at all.
$ sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date
V1.30
08/13/2012
I tried both with the raring kernel (3.8.0-33-generic ) on my Precise system,
and with a Trusty daily live CD, with the same results as usual.
Summary:
Alkis Georgopoulos, the issue you are reporting is an upstream one.
Could you please report this problem through the appropriate channel by
following the instructions _verbatim_ at
Alkis Georgopoulos, as per http://us.acer.com/ac/en/US/content/drivers
an update is available for your BIOS (1.30). If you update to this
following https://help.ubuntu.com/community/BiosUpdate , does it change
anything?
If not, could you please both specify what happened, and provide the output
I have the same problem with my Acer 5750G. I find I can control the
brightness by using echo 200 | sudo tee
/sys/class/backlight/intel_backlight/brightness and this has a range of
0 to 976. The key board brighness control and the control in system
settings seem to change the variable loacted at
Arthur Geeson, if you have a bug in Ubuntu, could you please file a new report
by executing the following in a terminal:
ubuntu-bug linux
For more on this, please see the Ubuntu Kernel team article:
https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports
the Ubuntu
Alkis Georgopoulos, the issue you are reporting is an upstream one. It
would be nice if somebody having it could send the bug to the developers
of the software by following the instructions verbatim at
https://wiki.ubuntu.com/Bugs/Upstream/kernel . If you have done so,
please tell us the number of
Alkis Georgopoulos, as you noted in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/comments/14 how you
could not run apport-collect, could you please execute the following via the
Terminal and we can mark it a duplicate of this one:
ubuntu-bug linux
** Tags added:
I attached the output of `ubuntu-bug linux` in bug #1001085.
Not that this is while booted with the Ubuntu kernel, because ubuntu-bug
refused to file a bug when I booted with the vanilla kernel.
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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Title:
Acer Aspire 5742Z brightness keys not working
To manage notifications
I tried with the latest available mainline kernel and it had the exact same
symptoms,
i.e. brightness not adjustable with the default kernel command line,
and partially working but without the notifications for the brightness changes
(and also by losing lots of other acpi features) with
Alkis Georgopoulos, if you could test the latest upstream kernel
available that would be great. It will allow additional upstream
developers to examine the issue. Refer to
https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the
upstream kernel, please remove the
I have 12.04 installed for 3 months now, yes the problem persists.
I tried `apport-collect -p linux 853244` on a fully updated system and
it crashed with the following:
$ LANG=C apport-collect -p linux 853244
No packages found matching linux.
ERROR: hook /usr/share/apport/general-hooks/ubuntu.py
Thank you for taking the time to file a bug report on this issue.
However, given the number of bugs that the Kernel Team receives during
any development cycle it is impossible for us to review them all.
Therefore, we occasionally resort to using automated bots to request
further testing. This is
As I said, I always keep my system up to date, and I tested again today with
linux-image-3.2.0-22-generic-pae 3.2.0-22.35
but apport crashed, that's why it didn't update the affected kernel version.
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
** Tags removed:
Alkis Georgopoulos, thank you for reporting this and helping make Ubuntu
better. This bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue?
Can you try with the latest development release of Ubuntu? ISO CD images
are available
I just tried with the Oneiric final CD (kernel 3.0.0-12-generic), and had the
exact same problems, i.e.:
* with the default boot options the laptop brightness keys made the brightness
indicator window show, but the brightness wasn't actually changed, and
* with acpi_osi=Linux in the isolinux
[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete = Expired
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** Attachment added: fwts-b-results.log
https://bugs.launchpad.net/bugs/853244/+attachment/2422305/+files/fwts-b-results.log
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Title:
Acer
** Attachment added: acpi.tar.bz
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/+attachment/2422306/+files/acpi.tar.bz
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Title:
** Attachment added: dmidecode.txt
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/+attachment/2422307/+files/dmidecode.txt
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Title:
** Attachment added: kern.log
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/+attachment/2422308/+files/kern.log
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Title:
Acer
** Attachment added: lspci.txt
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/+attachment/2422309/+files/lspci.txt
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Title:
Acer
** Attachment added: uname.txt
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/+attachment/2422310/+files/uname.txt
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Title:
Acer
** Attachment added: acpidump.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/+attachment/2422311/+files/acpidump.dat
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Title:
** Attachment added: dmesg
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/+attachment/2422312/+files/dmesg
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Title:
Acer Aspire
** Changed in: linux (Ubuntu)
Status: New = Confirmed
** Tags added: oneiric
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Title:
Acer Aspire 5742Z brightness keys not working
To
Thank you for taking the time to file a bug report on this issue.
However, given the number of bugs that the Kernel Team receives during
any development cycle it is impossible for us to review them all.
Therefore, we occasionally resort to using automated bots to request
further testing. This is
Thank you, I'll try when oneiric beta 2 comes out, as the current live
CD (beta 1) doesn't have 3.0.0-11 but 3.0.0-9, and I'd prefer to keep
Lucid installed in the hard disk.
I've just found a workaround in LP bug #518002:
adding acpi_osi=Linux in the kernel command line makes the brightness keys
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