[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete = Expired
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https://bugs.launchpad.net/bugs/1178727
Ethan Shalev, if for any reason you encounter any potential collateral issues
from acpi_osi=Linux, you could try using a different debug kernel parameter:
acpi_backlight=vendor
Despite this, could you please undo any WORKAROUNDs, and test the latest
mainline kernel via
I just installed a fresh install of 13.10 on this machine, and the problem
persisted. However, changing my GRUB settings to
GRUB_CMDLINE_LINUX_DEFAULT=quiet splash
GRUB_CMDLINE_LINUX=acpi_osi=Linux
now allows me to adjust the brightness, although at boot, it's set to 0. (I'll
look into that
Ethan Shalev, the next step is to bisect from 12.04 to 12.10 in order to
identify the offending commit. Could you please do this following
https://wiki.ubuntu.com/Kernel/KernelBisection ?
** Tags removed: kernel-bug-exists-upstream-3.12.0-031200rc6
kernel-bug-exists-upstream-v3.9
** Tags added:
Christopher M. Penalver, thanks for your clear instructions.
I tested with linux-image-3.12.0-031200rc6-generic, and this problem persists.
I also found that when booting the machine, I can adjust the brightness when
GRUB2 is loaded, and then when I boot into Ubuntu, I'm stuck at whatever
Ethan Shalve, could you please test the latest upstream kernel available
following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
additional upstream developers to examine the issue. Please do not test the
daily kernel folder, but the one all the way at the bottom. Once you've
I upgraded to Saucy, running 3.11, and this bug persists.
** Changed in: linux (Ubuntu)
Status: Expired = Opinion
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https://bugs.launchpad.net/bugs/1178727
Title:
8086:0046
[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete = Expired
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https://bugs.launchpad.net/bugs/1178727
Ethan Shalev, thank you for testing kernel 3.9. Could you please test
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-rc5-saucy/ ?
** Tags removed: kernel-bug-exists-upstream
** Tags added: kernel-bug-exists-upstream-v3.9
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
Tested with kernel 3.9. Problem exists there too.
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
** Tags added: kernel-bug-exists-upstream
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** Summary changed:
- Screen brightness can not be adjusted in Raring with Intel Ironlake graphics
+ 8086:0046 Screen brightness can not be adjusted in Raring with Intel Ironlake
graphics
** Tags added: latest-bios-v1.08 needs-upstream-testing regression-
release
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