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Message #22965
[Bug 1241871] Re: 13.10 kernels (3.11.x) Fail to light up certain intel backlights
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.12 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.
If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".
Thanks in advance.
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-rc6-saucy/
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Also affects: linux via
http://bugzilla.kernel.org/show_bug.cgi?id=59841
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1241871
Title:
13.10 kernels (3.11.x) Fail to light up certain intel backlights
Status in The Linux Kernel:
Unknown
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
Bug has been ongoing since 3.10-rc6
Certain UEFI laptops incorrectly report their BPP on their display,
causing kernel modesetting to fail
Full details see:
https://bugzilla.kernel.org/show_bug.cgi?id=59841
Developers have refused to quirk the regression, causing no display on
a a large number of systems.
Upgraded installations will boot with no display, and the installer will have no display.
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ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
DistroRelease: Ubuntu 13.10
MarkForUpload: True
Package: linux (not installed)
Tags: saucy
Uname: Linux 3.12.0-rc5-custom x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: Upgraded to saucy on 2013-10-17 (3 days ago)
UserGroups: adm audio backup bluetooth bumblebee cdrom dip fuse lp lpadmin netdev plugdev sambashare scanner sudo vboxusers video
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References