Public bug reported:
First I could only change the brightness level by one step. (From 100% to 95%.)
After I added 'GRUB_CMDLINE_LINUX="acpi_backlight=vendor"' in /etc/default/grub
the keys work as expected, but the notification showing the brightness level
displays the wrong value. Attached a picture with max brightness.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-19-generic 3.8.0-19.29
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: eeroz 2273 F.... pulseaudio
CRDA:
country DE:
(2400 - 2483 @ 40), (N/A, 20)
(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
(5250 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
(5470 - 5725 @ 40), (N/A, 26), DFS
Date: Fri Apr 26 21:54:04 2013
HibernationDevice: RESUME=UUID=c4d094e7-893d-4e8a-a869-fa08eb2b2d9c
InstallationDate: Installed on 2012-12-23 (123 days ago)
InstallationMedia: This
MachineType: LENOVO 24472AG
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic
root=UUID=b08558b9-9514-435a-8b9c-c012eb0fd91b ro acpi_backlight=vendor quiet
splash i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-19-generic N/A
linux-backports-modules-3.8.0-19-generic N/A
linux-firmware 1.106
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to raring on 2013-04-25 (1 days ago)
dmi.bios.date: 02/27/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G5ET92WW (2.52 )
dmi.board.asset.tag: Not Available
dmi.board.name: 24472AG
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG5ET92WW(2.52):bd02/27/2013:svnLENOVO:pn24472AG:pvrThinkPadW530:rvnLENOVO:rn24472AG:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 24472AG
dmi.product.version: ThinkPad W530
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug raring
** Attachment added: "Max brightness, but notification shows wrong value"
https://bugs.launchpad.net/bugs/1173352/+attachment/3655243/+files/bug.png
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https://bugs.launchpad.net/bugs/1173352
Title:
Brightness keys don't work as expected on Lenovo W530
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