I have recompiled my kernel with CONFIG_FB_RIVA=y and now lcd brightness
control works flawlessly and usplash is in full color. Thanks for the
attention
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Rivafb framebuffer needed on powerbook 12
https://launchpad.net/bugs/66392
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Public bug reported:
Binary package hint: linux-image-2.6.17-10-powerpc
12 inch display powerbooks (at least recent ones) have a nvidia geforce 5200 go
graphics card. As you know the ppc platform requires a framebuffer driver.
Since rivafb is compiled as a module in edgy default config
(linux
This problem seems to be related with what I posted in Bug #21478 : according
to
http://forums.gentoo.org/viewtopic-t-439845.html rivafb must be enabled instead
of ofonly (openfirmware) framebuffer driver in order to be able to change
display brightness on nvidia-based 12-inch display powerbook
I can confirm the big on my powerbook 12 1.5 ghz, nvida 5200 Go running ubuntu
edgy updated as of today. I am pretty sure the problem is caused by the usage
of open firmware (ofonly) framebuffer instead of rivafb framebuffer. My
yaboot.conf appends the option video=rivafb to the kernel, but riva
I can confirm that brightness control still is'nt working on my 12 powerbook
with ubunti edgy fully updated as of today. Using Fn+F1/F2 I just get the shiny
gtkpbbutons slider to move but with no effect whatsoever on display brightness.
Using fblevel I get this error message:
ioctl PMU_IOC_SET_B
