[Bug 605979] Re: Buttons rendered wrong (with white background) with nvidia-current

[Benjamin Otte (Company)]

As I said in the linked GNOME bug:

It's a bug in the nvidia driver.

If anybody wanted to work around this problem (other than installing nouveau), I'd suggest looking in Cairo's _cairo_xlib_device_create() in src/cairo-xlib-display.c and ensure that display->buggy_gradients is set to TRUE. Setting it to TRUE unconditionally will cause slowdowns on all drivers, so detecting the nvidia binary driver sounds like a good idea. I've been told by the Xorg developers that checking for the availablility of the NV-CONTROL extension works for that.
I'm not sure I'd want that patch upstream as it isn't a reliable check, but as a Maverick-specifc Ubuntu patch, it certainly makes sense.

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Buttons rendered wrong (with white background) with nvidia-current
https://bugs.launchpad.net/bugs/605979
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Status in Murrine Gtk+ Cairo Engine: New
Status in “gtk2-engines-murrine” package in Ubuntu: Confirmed

Bug description:
Binary package hint: gtk2-engines-murrine

With cairo 1.9 and the NVIDIA proprietary driver, buttons fail to render properly with the Ambiance and Radiance themes, among others. See attached screenshot (Finery theme).