Comment 89 for bug 43572

I do not have any BIOS password. The output of the following commands : -

ejvyas@ejvyas:~$ sudo dellLcdBrightness
[sudo] password for ejvyas:
Read Battery Mode Setting
    current: 0
        min: 0
        max: 7

ejvyas@ejvyas:~$ dellLcdBrightness
An Error occurred. The Error message is:
Could not instantiate SMBIOS table.
ejvyas@ejvyas:~$

I am a fan of Ubuntu. The brightness was working earlier - I was trying out
a whole lot of changes for tuning and speeding up Ubuntu ....I am sure
something failed. Please help me fix this

Thanks,
Vs

On Sun, Mar 23, 2008 at 4:27 PM, Christian Schuerer <email address hidden> wrote:

> Vyas, do you have a BIOS password set?
>
> Does the command "dellLcdBrightness" give any error messages?
>
> --
> Dell Laptops don't talk to HAL about brightness correctly
> https://bugs.launchpad.net/bugs/43572
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in Hardware Abstraction Layer (HAL): Fix Released
> Status in Source Package "hal" in Ubuntu: Fix Released
> Status in Source Package "linux" in Ubuntu: Fix Released
> Status in Source Package "linux-source-2.6.22" in Ubuntu: Won't Fix
>
> Bug description:
> This was discovered in Bug #38531. It seems that Dell laptops are able to
> change the brightness settings in the Bios but this does not talk properly
> to ACPI, HAL or anything else.
>
> >From http://bugzilla.gnome.org/show_bug.cgi?id=337580 :
> "Some code needs to be written to do this - there's no ACPI method to do
> it, but
> it can be done via an SMBios call from userspace."
>
> It means that the system does not know, and cannot change, the brightness
> of the monitor.
>

--
Vyas Sanzgiri
573 202 0165
http://ejvyas.blogspot.com