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.
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? :)