The offending commit is
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f82bdd0d77b6bf0dea08a1d957ab45d503f328b1
Since the BIOS of the laptop is from 2008 (but still the latest), it is
obvious that after that change it won't work anymore. It would be
interesting to know why upstream wanted to exclude pre-2009.
** Tags removed: needs-bisect
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1397739
Title:
[HP Compaq nx6310] Function buttons for brightness stopped working
Status in linux package in Ubuntu:
Confirmed
Bug description:
In 14.04 using kernel 3.13 the special function buttons of this HP
Compaq nx6310 laptop used to work correctly. I could increase or
decrease brightness, invoke the battery settings (mostly useless but
it worked), switch to an external display or enter sleep mode. The key
functions are invoked using Fn + the key with the designated function
as listed below.
Fn + F3 - Sleep - button/sleep SBTN 00000080 00000000 K
Fn + F4 - Switch to external display - video/switchmode VMOD 00000080 00000000
Fn + F8 - Battery information - button/battery BAT 00000080 00000000 K
Fn + F9 - Brightness down - video/brightnessdown BRTDN 00000087 00000000
Fn + F10 - Brightness up - video/brightnessup BRTUP 00000086 00000000
I went through the troubleshooting steps described at
https://wiki.ubuntu.com/Hotkeys/Troubleshooting. In 14.10 none of
these buttons work. Using acpi_listen I found that no events are fired
in 14.10, but under 14.04 these buttons do indeed fire ACPI events and
thus work correctly. The ACPI events listed above are fired in 14.04
using kernel 3.13 but are not fired under 14.10 using kernel 3.16.
Using xbacklight I can still change the brightness in 14.10, if that
information is of any help.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-25-generic 3.16.0-25.33
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: giancarlo 1921 F.... lxpanel
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'iw'
CurrentDesktop: LXDE
Date: Sun Nov 30 22:24:13 2014
HibernationDevice: RESUME=UUID=207b9cef-a34d-4cbe-b903-4e129ffc1789
InstallationDate: Installed on 2014-08-25 (97 days ago)
InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64
(20140416.2)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Hewlett-Packard HP Compaq nx6310 (RH334ET#ABD)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic
root=UUID=a3bac2e9-23b4-4965-b4fb-322b8037fca4 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-25-generic N/A
linux-backports-modules-3.16.0-25-generic N/A
linux-firmware 1.138
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to utopic on 2014-11-04 (26 days ago)
dmi.bios.date: 02/21/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68YDU Ver. F.0E
dmi.board.name: 30AA
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 58.13
dmi.chassis.asset.tag: CNU645278T
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvr68YDUVer.F.0E:bd02/21/2008:svnHewlett-Packard:pnHPCompaqnx6310(RH334ET#ABD):pvrF.0E:rvnHewlett-Packard:rn30AA:rvrKBCVersion58.13:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq nx6310 (RH334ET#ABD)
dmi.product.version: F.0E
dmi.sys.vendor: Hewlett-Packard
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