[Bug 78562] [gma500] wrong pixel clock on LVDS (half the correct frequency)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78562

--- Comment #1 from Andreas <linuxuser330250 at gmx.net> ---
I have the same issue on an ASUS Eee PC 1101HA running Ubuntu 14.04 LTS.

The screen starts to flicker around 30 seconds after the gma500_gfx.ko kernel
module is loaded.
This happens both on the console (no X started) and then X started.
The flicker is changing. When it starts it hits the screen like a storm. Then
it "stabilizes" at a lower flicker rate...

Graphics performance is good with the gma500_gfx.ko accelerator, but I found no
way to get rid of the flickering.

When vesafb is used, no flickering occurs. But vesafb is tied to the VESA modes
listed in the BIOS, and sadly 1366x768 is missing, so instead 1024x768 is used
which results in a wrong aspect ratio. It's also very slow.

I don't know what Ubuntu 12.04.4 does differently, but with the previous LTS
version of Ubuntu this flickering does not occur.

Hopefully this will be fixed soon.

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