Comment 141 for bug 568611

Same problem here, same kernel.

2011/1/27 cherep <email address hidden>

> @Kamal
>
> after the last kernel update, I can't control my brightness via
> functional keys :)
>
> uname -v -r
> 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011
>
> What should I do to get it working back?
> Thanks!!!
>
> --
> You received this bug notification because you are a direct subscriber
> of the bug.
> https://bugs.launchpad.net/bugs/568611
>
> Title:
> Screen brightness control fails on Dell Studio 1558
>
> Status in NULL Project:
> Invalid
> Status in “alsa-driver” package in Ubuntu:
> Invalid
> Status in “linux” package in Ubuntu:
> In Progress
>
> Bug description:
> Attempts (on a current Lucid beta) to control the screen brightness on
> my Dell Studio 1558 fail with the following errors reported in dmesg:
>
> [ 1162.236365] ACPI: Failed to switch the brightness
> [ 1162.379144] ACPI: Failed to switch the brightness
> [ 1162.538226] ACPI: Failed to switch the brightness
> [ 1162.667358] ACPI: Failed to switch the brightness
> [ 1162.784171] ACPI: Failed to switch the brightness
>
> This is true both for the keyboard's brightness controls (Fn-F4,
> Fn-F5) and for a gnome-brightness-applet on the panel.
>
> Output of acpidump, dmesg and lspci is attached.
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/null/+bug/568611/+subscribe
>

--
Luciano Dato