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Brightness control on my laptop does not work, how can I diagnose if it's unsupported, or a bug? And if it is a bug, what do I include in the bug report?

UPDATE

Thank you for all the responses, specially @Guandalino for the bounty. But unfortunately the laptop in question is no longer functional due to an accident involving water. And as such I cannot actively participate and try the out the potential solutions.

Those still interested in this question, please participate in this discussion at Ask Ubuntu Meta.

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closed as too localized by Oli Jun 21 '11 at 21:47

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

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This is a very smart question, I'm going to start a bounty for this. Thanks –  Guandalino Jun 18 '11 at 21:13
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I have closed this as it's no longer possible to answer it. If you feel you have a similar issue, please feel free to start your own question but when you do, please make sure you include what hardware (make and model) you're talking about as laptop bugs are usually extremely hardware specific. –  Oli Jun 21 '11 at 21:48
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@Guandalino I have refunded your bounty. –  Oli Jun 21 '11 at 21:49
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2 Answers 2

There is a step-by-step troubleshooting guide on the wiki.

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Check or dig around your laptop vendors website to see if they have any useful information relating dianosing the control.

If the vendor has forum, try seek information there also. Please add your laptop model detail as part of the post so we know which product and model you are seeking support on.

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Just asking how to troubleshoot - not that it matters now; check the updated question. –  Oxwivi Jun 21 '11 at 9:31
    
@Oxwivi I have updated the post. I know it does not matter now but like Guandalin said, this is a very smart question and thought I add information which might aid someone looking for something similar in the future. Thanks for raising the flag. –  Bitmap Jun 21 '11 at 9:43
    
I was referring to you asking for laptop details. –  Oxwivi Jun 21 '11 at 9:55
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