Juanito de los palotes:
1) To clarify the Bug Description, what other linux distributions did you use
specifically (ex. vendor, kernel version, etc.)?
2) Was a WORKAROUND identified following
https://wiki.ubuntu.com/Kernel/Debugging/Backlight ?
** Tags added: bios-outdated-300
** Tags removed: kernel-bug-exists-upstream
** Tags added: kernel-bug-exists-upstream-4.9-rc8 needs-upstream-testing
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1648203
Title:
Backlight Bug
Status in linux package in Ubuntu:
Incomplete
Bug description:
Backlight control does not work and there are no entries in
/sys/class/backlight
On other linux distributions backlight control works fine and there is
an entry in /sys/class/backlight
I attach the files with debugging information.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-51-generic 4.4.0-51.72
ProcVersionSignature: Ubuntu 4.4.0-51.72-generic 4.4.30
Uname: Linux 4.4.0-51-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: zulu 1367 F.... pulseaudio
CurrentDesktop: XFCE
Date: Wed Dec 7 20:03:48 2016
HibernationDevice: RESUME=UUID=471f1492-ab85-4809-b043-1b95ab3d8e28
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2a Intel Corp.
Bus 001 Device 003: ID 1bcf:0005 Sunplus Innovation Technology Inc. Optical
Mouse
Bus 001 Device 002: ID 04f2:b424 Chicony Electronics Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. GL552VW
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-51-generic
root=UUID=20bcbace-4432-45d8-bff1-cf7b1b4b7aa3 ro nomodeset quiet splash
vt.handoff=7 video.use_bios_initial_backlight=0
RelatedPackageVersions:
linux-restricted-modules-4.4.0-51-generic N/A
linux-backports-modules-4.4.0-51-generic N/A
linux-firmware 1.157.5
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/16/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: GL552VW.218
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: GL552VW
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrGL552VW.218:bd03/16/2016:svnASUSTeKCOMPUTERINC.:pnGL552VW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnGL552VW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: GL552VW
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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