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Message #90110
[Bug 720912] Re: Maverick (through Precise) regression: Dell M1330 backlight brightness messed up
apport information
** Tags added: trusty
** Description changed:
The Dell M1330 backlight has exactly 8 levels of brightness. I expect
each press of the brightness adjustment keys to change the brightness by
one level. When I use the keyboard to adjust the brightness in GNOME, it
sometimes changes by one level, and sometimes changes by two levels.
In Karmic, the buttons worked like I have describe above. In Lucid, everything worked correctly. In Maverick (and every subsequent release at least through Precise), we're back to the same behavior as in Karmic. So this is a regression in functionality.
---
Architecture: amd64
DistroRelease: Ubuntu 11.04
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
NonfreeKernelModules: nvidia wl
Package: acpid 1:2.0.7-1ubuntu2
PackageArchitecture: amd64
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Tags: natty running-unity
Uname: Linux 2.6.38-11-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout fuse lpadmin plugdev sambashare
+ ---
+ ApportVersion: 2.14.1-0ubuntu3.2
+ Architecture: amd64
+ AudioDevicesInUse:
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: ryan 2465 F.... pulseaudio
+ CurrentDesktop: Unity
+ DistroRelease: Ubuntu 14.04
+ HibernationDevice: RESUME=UUID=e00b6e22-9d5b-45f4-a861-8fa38e5ae470
+ InstallationDate: Installed on 2014-06-15 (153 days ago)
+ InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
+ MachineType: Dell Inc. XPS M1330
+ NonfreeKernelModules: wl
+ Package: linux (not installed)
+ ProcFB: 0 nouveaufb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.11.2-phc root=UUID=355b9c19-46fe-44f2-8715-f9df660834f7 ro persistent quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
+ RelatedPackageVersions:
+ linux-restricted-modules-3.13.11.2-phc N/A
+ linux-backports-modules-3.13.11.2-phc N/A
+ linux-firmware 1.127.4
+ Tags: trusty
+ Uname: Linux 3.13.11.2-phc x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
+ _MarkForUpload: True
+ dmi.bios.date: 12/26/2008
+ dmi.bios.vendor: Dell Inc.
+ dmi.bios.version: A15
+ dmi.board.name: 0U8042
+ dmi.board.vendor: Dell Inc.
+ dmi.chassis.type: 8
+ dmi.chassis.vendor: Dell Inc.
+ dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn0U8042:rvr:cvnDellInc.:ct8:cvr:
+ dmi.product.name: XPS M1330
+ dmi.sys.vendor: Dell Inc.
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/720912/+attachment/4262085/+files/AlsaInfo.txt
--
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https://bugs.launchpad.net/bugs/720912
Title:
Maverick (through Precise) regression: Dell M1330 backlight brightness
messed up
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
The Dell M1330 backlight has exactly 8 levels of brightness. I expect
each press of the brightness adjustment keys to change the brightness
by one level. When I use the keyboard to adjust the brightness in
GNOME, it sometimes changes by one level, and sometimes changes by two
levels.
In Karmic, the buttons worked like I have describe above. In Lucid, everything worked correctly. In Maverick (and every subsequent release at least through Precise), we're back to the same behavior as in Karmic. So this is a regression in functionality.
---
Architecture: amd64
DistroRelease: Ubuntu 11.04
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
NonfreeKernelModules: nvidia wl
Package: acpid 1:2.0.7-1ubuntu2
PackageArchitecture: amd64
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Tags: natty running-unity
Uname: Linux 2.6.38-11-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout fuse lpadmin plugdev sambashare
---
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ryan 2465 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=e00b6e22-9d5b-45f4-a861-8fa38e5ae470
InstallationDate: Installed on 2014-06-15 (153 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Dell Inc. XPS M1330
NonfreeKernelModules: wl
Package: linux (not installed)
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.11.2-phc root=UUID=355b9c19-46fe-44f2-8715-f9df660834f7 ro persistent quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
RelatedPackageVersions:
linux-restricted-modules-3.13.11.2-phc N/A
linux-backports-modules-3.13.11.2-phc N/A
linux-firmware 1.127.4
Tags: trusty
Uname: Linux 3.13.11.2-phc x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/26/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0U8042
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn0U8042:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: XPS M1330
dmi.sys.vendor: Dell Inc.
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