Comment 229 for bug 568611

Great news!!! Thank's for all your work Kamal!

2011/8/17 Kamal Mostafa <email address hidden>

> I'm very pleased to announce that the last of Matthew Garrett's
> backlight patches has been merged into the upstream Linux tree[1] and
> the Ubuntu Oneiric kernel tree. It should appear in the next official
> Oneiric kernel release (3.0.0-9.12). As noted previously, some Oneiric
> systems will likely still need to boot with "acpi_backlight=vendor", and
> pending resolution of bug 827517 all Oneiric systems will still need to
> use the gnome-settings-daemon package supplied by my backlight PPA[2].
> Further small refinements (fixing the popup display behavior) are likely
> in the near future.
>
> I will be looking into the plausibility of merging the patch set into
> the official Ubuntu kernels for Natty and Maverick next, and will
> continue to support those releases via my PPA in the meantime.
>
> [1]
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=aaa6fd2a004147bf32fce05720938236de3361d9
> [2] https://launchpad.net/~kamalmostafa/+archive/linux-kamal-mjgbacklight<https://launchpad.net/%7Ekamalmostafa/+archive/linux-kamal-mjgbacklight>
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> 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:
> Fix Committed
>
> 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.
>
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>

--
Luciano Dato