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Message #147863
[Bug 1519282] Re: Keyboard backlight stopped working after upgrade to Wily
Harry P, the next step is to fully commit bisect from kernel 3.19 to 4.2
in order to identify the last good kernel commit, followed immediately
by the first bad one. This will allow for a more expedited analysis of
the root cause of your issue. Could you please do this following
https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions is not fully commit
bisecting.
Thank you for your understanding.
Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs
** Tags added: kernel-bug-exists-upstream-4.4-rc2 needs-bisect
regression-release
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1519282
Title:
Keyboard backlight stopped working after upgrade to Wily
Status in linux package in Ubuntu:
Incomplete
Bug description:
I'm using a Samsung Ativ Book 9. Keyboard backlight worked OK under
Vivid, seems to have stopped working since I installed Wily. Can't
see any evidence of it in /sys/class.
Happy to do any further debugging if it helps.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-18-generic 4.2.0-18.22
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: harry 1635 F.... pulseaudio
/dev/snd/controlC0: harry 1635 F.... pulseaudio
CurrentDesktop: GNOME
Date: Tue Nov 24 09:45:23 2015
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=9a886cf6-b939-4fdc-9721-bbf214a10519
InstallationDate: Installed on 2015-10-15 (39 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 940X3G/930X3G
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-18-generic.efi.signed root=/dev/mapper/ubuntu--gnome--vg-root ro noprompt persistent quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.2.0-18-generic N/A
linux-backports-modules-4.2.0-18-generic N/A
linux-firmware 1.149.2
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/19/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P05ACJ.128.140819.dg
dmi.board.asset.tag: No Asset Tag
dmi.board.name: NP940X3G-K05US
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: SAMSUNG_SW_REVISION_1234567890ABCD
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP05ACJ.128.140819.dg:bd08/19/2014:svnSAMSUNGELECTRONICSCO.,LTD.:pn940X3G/930X3G:pvrP05ACJ:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP940X3G-K05US:rvrSAMSUNG_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: 940X3G/930X3G
dmi.product.version: P05ACJ
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
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