Hello Christopher. I did the update just now and nothing has changed.
Here's the output you asked for:
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
45CN38WW
10/21/2011
BTW as I already mentioned, I wonder if you are looking for the problem
in the wrong place. I filed this bug against the kernel since I did not
know where exactly else to file it and the hardware hotkey is not
working.
But as I said, if I manually adjust the contents of
/sys/class/backlight/intel_backlight/brightness the actual display
brightness does change.
The problem is only that I am not able to change the brightness via the
keyboard hotkey as well as the power applet.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1255428
Title:
8086:0116 [Lenovo IdeaPad Z570] LCD brightness control keys and widget
do not work on Intel Graphics on Saucy
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
After upgrading to Saucy, on my Lenovo IdeaPad Z570 with Intel HD
Graphics 3000, it is no longer possible to control the LCD brightness
using the hardware brightness control keys. Likewise for the KDE power
management settings or the battery icon on my Kubuntu Plasma tray. (I
don't use GNOME/Unity.) Until Raring I did not have this problem.
There is a workaround available from
http://askubuntu.com/questions/362894/changing-the-brightness-stopped-
working-in-13-10-saucy-salamander i.e. doing the following command on
a terminal:
echo 150 | sudo tee /sys/class/backlight/intel_backlight/brightness
where 150 is on the scale of 0 to whatever is given within
/sys/class/backlight/intel_backlight/max_brightness.
Based on this I wrote a GUI which however needs to be run using
sudo/kdesudo/gksudo. I have attached it.
Bug #1241745 also relates to the same problem on Saucy but apparently relates
to an NVidia driver and I was asked to track this as a separate bug
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1241745/comments/17
---
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
DistroRelease: Ubuntu 13.10
InstallationDate: Installed on 2013-10-19 (38 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64
(20131016.1)
MarkForUpload: True
Package: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6
Tags: saucy
Uname: Linux 3.11.0-13-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
---
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: samjnaa 1717 F.... pulseaudio
DistroRelease: Ubuntu 13.10
HibernationDevice: RESUME=UUID=ba00d992-e43e-4bce-8689-9647370add15
InstallationDate: Installed on 2013-10-19 (117 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64
(20131016.1)
MachineType: LENOVO HuronRiver Platform
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=(hd0,msdos9)/vmlinuz root=/dev/sda9 ro quiet
splash
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
RelatedPackageVersions:
linux-restricted-modules-3.11.0-15-generic N/A
linux-backports-modules-3.11.0-15-generic N/A
linux-firmware 1.116
StagingDrivers: rts5139
Tags: saucy staging
Uname: Linux 3.11.0-15-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 02/22/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 45CN28WW
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Emerald Lake
dmi.board.vendor: LENOVO
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnLENOVO:bvr45CN28WW:bd02/22/2011:svnLENOVO:pnHuronRiverPlatform:pvrIdeapadZ570:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct10:cvr0.1:
dmi.product.name: HuronRiver Platform
dmi.product.version: Ideapad Z570
dmi.sys.vendor: LENOVO
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