On 17/05/10 22:24, Mauro Santos wrote:
I have noticed that if I don't have radeon_ucode [1] installed then
early or late KMS don't work and I get just a black screen. However I
didn't wait 1 minute to check if after a while the boot process resumes.
[1] http://aur.archlinux.org/packages.php?ID=33016
My experience with an integrated Radeon HD 4200 card and KMS is similar.
Without radeon_ucode, everything will work fine until I need to resume
from suspend-to-ram. The screen will then just stay in standby mode for
about a minute (a couple of seconds, give or take) before it'll come to
life again. With either KMS disabled or radeon_ucode installed, this
problem doesn't occur.
It appears that, in my case, the card requests a firmware file named
R600_rlc.bin which is included in radeon_ucode. If you google this file,
you'll find several instances in which this file has been discussed.
Some insightful discussion is here: http://lkml.org/lkml/2010/1/26/169.
In particular, notice Alex's reply stating:
--8<--------------------------------------------------------------------
In general, microcode is slowly being moved out of the kernel and into
the Linux firmware tree:
http://git.kernel.org/?p=linux/kernel/git/dwmw2/linux-firmware.git;a=tree
Eventually all of the radeon microcode will end up out up in that tree.
--8<--------------------------------------------------------------------
I'm not sure what this means for our kernel26-firmware package, but I
believe we would want to ship the files included in the "Linux firmware
tree".
What do you think? :)
