added a duplicate bug generated by ubuntu-bug.
is there a way to make it upload the information to a specific bug and not make
a new bug entry? or is it fine to just make duplicates? should I also make one
using the newest kernel?
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will do, as soon as I get it booting into ubuntu again.
Apparently update-grub (or rather grub-probe) doesn't work when chrooting into
a root partition if it's btrfs, so I'm gonna try booting through a efi booter
from another computer running the same kernelversion of 14.04..
I'm quite pissed a
Nils Sabelstrom, thank you for your comment. So your hardware and problem may
be tracked, could you please file a new report with Ubuntu by executing the
following in a terminal while booted into a Ubuntu repository kernel (not a
mainline one) via:
ubuntu-bug linux
For more on this, please read
Bug can be confirmed present in 14.04 with standard LTS kernel and
3.15rc2 kernel from ubuntu mainline kernel-ppa, daily build for april
24th (latest marked trusty at the time, now nonexistent, should I try a
newer kernel even if marked utopic?)
I tried upgrading to bios version 2.21, but there wa
jonata, thank you for your comment. So your hardware and problem may be
tracked, could you please file a new report with Ubuntu by executing the
following in a terminal while booted into a Ubuntu repository kernel (not a
mainline one) via:
ubuntu-bug linux
For more on this, please read the offi
Bug still present in Ubuntu 14.04
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https://bugs.launchpad.net/bugs/1173725
Title:
[Acer Aspire V5-171] Backlight cannot be adjusted unless passing
acpi_backlight=vendor
Sorry, I don't think the backlight problem on the V5-171 is a
regression. I've never had it work as expected.
I've now tried the acpi_osi="!Windows 2012" test, to see if this machine
could be added to the temporary blacklist. I.e. whether my bug was a
regression caused when Linux added the "Wind
** Tags added: regression-potential
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https://bugs.launchpad.net/bugs/1173725
Title:
[Acer Aspire V5-171] Backlight cannot be adjusted unless passing
acpi_backlight=vendor
** Bug watch added: Linux Kernel Bug Tracker #51231
http://bugzilla.kernel.org/show_bug.cgi?id=51231
** Also affects: linux via
http://bugzilla.kernel.org/show_bug.cgi?id=51231
Importance: Unknown
Status: Unknown
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Sorry I've been neglecting this (and my original report may have fluffed
the detail).
This is Windows 8 hardware. Manually poking the intel_backlight driver
in sysfs (echo 100 | sudo tee /sys/class/intel_backlight/brightness)
works fine. So for now I'm assuming the problem is what's referred to
That is, I'm hoping the brightness keys will work (e.g. under KDE) when
using the commit "ACPI / video / i915: No ACPI backlight if firmware
expects Windows 8". With the non-working acpi_backlight removed, KDE
would use the working intel_backlight instead.
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