screen brightness controls don't work (regression)
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Ubuntu |
New
|
Undecided
|
Unassigned | ||
Bug Description
With the latest kernel from ubuntu, my system no longer responds to screen brightness adjustments. The OSD shows that the keyevents for brightness up and brightness down are received. (The brightness indicator is displayed, and the bar moves left or right as I would expect, based on the key pressed.) However, the LCD's backlight does not dim/brighten.
system: lenovo thinkpad x61
$ uname -a
Linux discipline 2.6.27-11-generic #1 SMP Thu Jan 29 19:24:39 UTC 2009 i686 GNU/Linux
Package status for latest kernel package:
$ dpkg --status linux-image-
Package: linux-image-
Status: install ok installed
Priority: optional
Section: base
Installed-Size: 92184
Maintainer: Ubuntu Kernel Team <email address hidden>
Architecture: i386
Source: linux
Version: 2.6.27-11.27
Provides: fuse-module, ivtv-modules, kvm-api-4, linux-image, linux-image-2.6, ndiswrapper-
Depends: initramfs-tools (>= 0.36ubuntu6), coreutils | fileutils (>= 4.0), module-init-tools (>= 3.3-pre11-4ubuntu3)
Pre-Depends: dpkg (>= 1.10.24)
Recommends: lilo (>= 19.1) | grub
Suggests: fdutils, linux-doc-2.6.27 | linux-source-2.6.27
Conflicts: hotplug (<< 0.0.20040105-1)
Description: Linux kernel image for version 2.6.27 on x86/x86_64
This package contains the Linux kernel image for version 2.6.27 on
x86/x86_64.
.
Also includes the corresponding System.map file, the modules built by the
packager, and scripts that try to ensure that the system is not left in an
unbootable state after an update.
.
Supports Generic processors.
.
Geared toward desktop systems.
.
You likely do not want to install this package directly. Instead, install
the linux-generic meta-package, which will ensure that upgrades work
correctly, and that supporting packages are also installed.
Previous kernel package status:
$ dpkg --status linux-image-
Package: linux-image-
Status: install ok installed
Priority: optional
Section: base
Installed-Size: 92124
Maintainer: Ubuntu Kernel Team <email address hidden>
Architecture: i386
Source: linux
Version: 2.6.27-9.19
Provides: fuse-module, ivtv-modules, kvm-api-4, linux-image, linux-image-2.6, ndiswrapper-
Depends: initramfs-tools (>= 0.36ubuntu6), coreutils | fileutils (>= 4.0), module-init-tools (>= 3.3-pre11-4ubuntu3)
Pre-Depends: dpkg (>= 1.10.24)
Recommends: lilo (>= 19.1) | grub
Suggests: fdutils, linux-doc-2.6.27 | linux-source-2.6.27
Conflicts: hotplug (<< 0.0.20040105-1)
Description: Linux kernel image for version 2.6.27 on x86/x86_64
This package contains the Linux kernel image for version 2.6.27 on
x86/x86_64.
.
Also includes the corresponding System.map file, the modules built by the
packager, and scripts that try to ensure that the system is not left in an
unbootable state after an update.
.
Supports Generic processors.
.
Geared toward desktop systems.
.
You likely do not want to install this package directly. Instead, install
the linux-generic meta-package, which will ensure that upgrades work
correctly, and that supporting packages are also installed.
| Noel J. Bergman (noeljb) wrote | #1 |
Purely for what it is worth, I have a T61p and the brightness buttons are working as expected.
$ dpkg -l | grep linux-image
ii linux-image-
ii linux-image-
ii linux-image-
ii linux-image-generic 2.6.27.11.14 Generic Linux kernel image
$ uname -r
2.6.27-11-generic
$ dpkg --status linux-image-
Package: linux-image-
Status: install ok installed
Priority: optional
Section: base
Installed-Size: 108668
Maintainer: Ubuntu Kernel Team <email address hidden>
Architecture: amd64
Source: linux
Version: 2.6.27-11.27
...
Did Lenovo ship an x61 model without a Core 2 processor? Or did you install as i386 instead of x86_64?