Ubuntu Multimedia :: Laptop Monitor Running With 61hz Instead Of 60hz When Activating KMS?

Jul 4, 2010

today i was trying to activate KMS by adding:

Code:
radeon.modeset=1
to grub.

it worked fine, and fixed the black-box bug in cairo-dock, and i finally had a nice graphic bootscreen again.

but another bug occured: im running dual-screen setup, my notebook is connected via vga to a dell 22 inch widescreen TFT.

by default both screens running with 60hz and no problem.

now, after activating KMS it happend that, while the dell monitor still ran 60hz, the notebook screen was running with 61hz! it was shown in the monitor-options.
the notebook monitor was therefore flickering a bit for 5 seconds, than running fine for another few seconds. then flickering again. (obviously, as 61hz is too much when it should run with 60hz!)

so my question is: how can i activate KMS again and have both of my screens running with 60hz again? is there an option?

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[Code]....

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Code: Select allDetailed mode: Clock 241.500 MHz, 597 mm x 336 mm
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But I got this error:

Code: Select allX Error of failed request:  BadMatch (invalid parameter attributes)
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  Minor opcode of failed request:  18 (RRAddOutputMode)
  Serial number of failed request:  31
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[URL]

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Code:
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[Code].....

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Code:

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Possible Duplicate:
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