[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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Ti
787B, thank you for reporting this bug and helping make Ubuntu better. Please
execute the following command, as it will automatically gather debugging
information, in a terminal:
apport-collect 693942
As well, could you please provide all relevant detail following:
https://wiki.ubuntu.com/Kernel
Hello Everyone, just to confirm,
The new line will be, 'GRUB_CMDLINE_LINUX_DEFAULTacpi_osi= '
and then save and update GRUB?
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Title:
Acer Aspire
Eric (and anyone else affected):
have you tried following the advice at
https://launchpad.net/~kamalmostafa/+archive/linux-kamal-mjgbacklight ?
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Ti
I have an Acer Aspire 5741 with Natty fully updated and still i have no
backlight control
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Title:
Acer Aspire 5742Z No Screen Brightness Control
I have an Acer Aspire 5750G with the same brightness control problem.
I have a current installation of Ubuntu 11.04
Adding the fix to the grub command line worked.
If you have problems with this, check that you have done an update-grub
after changing the command in /etc/default/grub
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my fn key for brightness control in Acer Aspire 5742z for Ubuntu11.04
dose not work. it shows brightness decreases but there is no effect.
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Title:
Confirmed under Ubuntu 10.10 fully updated as of 4/16/2011. Model is
5810TZ-4274. Cuts effective battery life in half.
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Title:
Acer Aspire 5742Z N
I have Acer Aspire 5742Z-4685. This problem existed in my ubuntu 10.10
installation and yesterday i updated to Natty beta and this problem is
still there.
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** Description changed:
The screen brightness controls on this laptop do not work in Ubuntu
10.10 with all updates installed to-date.
Pressing the Fn+arrow keys will bring up the brightness notification and
indicate a change, but nothing happens. The power control is unable to
dim th
Confirmed identical behavior on Ubuntu Natty 11.04 apha 4. Even the
work-around works. (Though by the looks of it I probably will be
switching distributions.)
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Confirming that the problem still exists with all updates to 2011-03-06
installed. I'll test with Natty alpha 4 this evening.
Melvin, the "acpi_osi= " consistently works for me. Make sure you have
a blank space after the equal sign. I put it right after the "splash"
in the boot commands.
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Y
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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Title:
Acer Aspire 5742Z No Screen Brightness Control
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This is also true for Natty.
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Title:
Acer Aspire 5742Z No Screen Brightness Control
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htt
I can confirm this bug. I have the same laptop with Ubuntu 10.10 fully
updated and it doesn't work. I tried the fix above but it doesn't work
for me.
I installed linux 2.6.37 and the bug persists. I will try using a Natty
live session to see if this persists in the latest image.
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Confirming that the problem still exists with all updates to-date
installed.
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Title:
Acer Aspire 5742Z No Screen Brightness Control
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** Tags added: kj-triage
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Title:
Acer Aspire 5742Z No Screen Brightness Control
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https:/
Additional testing: Adding "acpi_osi=" (without quotes) with nothing
after the equal sign to the GRUB_CMDLINE_LINUX_DEFAULT line in
/etc/default/grub makes the brightness keys work complete with 10 levels
of brightness. However, the notification no longer works.
Also, connecting and removing the
** Attachment added: "version.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/693942/+attachment/1774913/+files/version.log
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Title:
** Attachment added: "uname-a.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/693942/+attachment/1774912/+files/uname-a.log
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** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/693942/+attachment/1774911/+files/lspci-vnvn.log
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** Attachment added: "grep-video.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/693942/+attachment/1774910/+files/grep-video.txt
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** Attachment added: "dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/693942/+attachment/1774909/+files/dmesg.log
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Title:
Ace
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/693942/+attachment/1774907/+files/acpidump.txt
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Title:
Acer Aspire 5742Z
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