Public bug reported:
My brightness keys started malfunctioning when I did an upgrade, which
brought, among other things, the 3.2.0-29.46 kernel. To verify, I went
back to the previous kernel I was running (3.2.0-26.41), and on that one
the brightness keys work well.
Expected behavior: On pressing brightness up/down, the brightness goes
up/down a small amount, and an indicator shows the increase/decrease.
Actual behavior: On pressing brightness up/down, brightness goes all the
way up/down. I do see the small increases but they happen very quickly
in succession, as if I was keeping the brightness up/down keys pressed.
So with this kernel, I can either have the brightness all the way up, or
all the way down, with no middle ground.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-29-generic 3.2.0-29.46
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: roadmr 2239 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not
found.
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf6000000 irq 45'
Mixer name : 'Intel IbexPeak HDMI'
Components : 'HDA:10ec0269,144dc08b,00100100
HDA:80862804,80860101,00100000'
Controls : 25
Simple ctrls : 12
Date: Mon Aug 27 11:52:02 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=a02d98ff-32c9-427c-9c79-1daa4de6065d
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120423)
MachineType: SAMSUNG ELECTRONICS CO., LTD. QX310/QX410/QX510/SF310/SF410/SF510
ProcEnviron:
LANGUAGE=en_CA:en
TERM=xterm
PATH=(custom, user)
LANG=en_CA.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic
root=UUID=a5252308-b407-44d9-92e2-5d6a7beb3210 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-29-generic N/A
linux-backports-modules-3.2.0-29-generic N/A
linux-firmware 1.79
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 05/25/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 05MX.M008.20110525.SCY
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: QX310/QX410/QX510/SF310/SF410/SF510
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: 05MX
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.:bvr05MX.M008.20110525.SCY:bd05/25/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pnQX310/QX410/QX510/SF310/SF410/SF510:pvr05MX:rvnSAMSUNGELECTRONICSCO.,LTD.:rnQX310/QX410/QX510/SF310/SF410/SF510:rvr05MX:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: QX310/QX410/QX510/SF310/SF410/SF510
dmi.product.version: 05MX
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug precise regression-update running-unity staging
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https://bugs.launchpad.net/bugs/1042311
Title:
[Samsung QX410] Brightness keys malfunction after upgrade to
3.2.0-29.46 kernel
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