Bug#659463: Not work GPU acceleration on AMD Radeon HD6570
Гаврилов Михаил Витальевич wrote:
> Without firmware-linux-nonfree package, GPU acceleration not work, GNOME
> Shell not work
I assume by "GPU acceleration not work" you mean 3d rendering is slow.
This is unavoidable.
Yes, GNOME Shell requires fast "3d" rendering for reasonable
performance, so for now it turns itself off when graphics drivers are
not able to accelerate that. There are changes in the pipeline to
make rendering using the CPU faster, and then that will presumably
change.
> and dual monitor worked as single monitor.
This part might or might not be fixable. Could you attach full
"dmesg" output and Xorg.0.log from such a boot?
> This is
> unusable for me, and I am not testing other software anymore. I am very
> surprised, I thinking that if I not will install "fglrx", I use open
> driver "Mesa - Gallium".
Response in footnote[*].
Hope that helps,
Jonathan
[*] Do you mean that neither unaccelerated rendering without the
firmware nor accelerated rendering with the firmware is acceptable to
you?
In that case, there is not much I can do to help. I am not aware of
any project to reverse-engineer the radeon firmware for any model
(though it would certainly be valuable)! The only graphics processors
in wide use I know of where we know the instruction set used by
firmware and are able to write our own are Nvidia processors, thanks
to the Nouveau project:
https://github.com/pathscale/envytools/blob/master/INSNS
http://lwn.net/Articles/367016/
http://nouveau.freedesktop.org/wiki/InstallDRM#Firmware
The firmware[**] is software that runs on your GPU, rather than on the
CPU. While the CPU component of the Radeon driver (usually simply
called "the driver") is indeed free software, and we are able to
support it, the firmware is a black box. Luckily it does not change
very often --- in fact, while new firmware has occasionally been
added, none of the Radeon firmware blobs distributed at
http://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git;a=summary
seem to have ever changed.
[**] http://wiki.debian.org/Firmware
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