Kernel almost hangs when CONFIG_DRM_RADEON=y

[Pavel Ivanov]

2011/8/27 Michel Dänzer <michel at daenzer.net>:
>> I observe very strange behavior dependent on value of
>> CONFIG_DRM_RADEON parameter. When it's set to m everything works very
>> good, no problem. When I set it to y I see kernel hang during boot. Or
>> I should better say it "almost hangs" because during last boot attempt
>> I accidentally waited a little bit longer and saw that after more than
>> a minute waiting system continued to boot. Dmesg after "hang" shows
>> these messages:
>>
>> [    8.542639] [drm] Loading CEDAR Microcode
>> [   69.161605] r600_cp: Failed to load firmware "radeon/CEDAR_pfp.bin"
>> [   69.161670] [drm:evergreen_startup] *ERROR* Failed to load firmware!
>>
>> While during normal boot
>>
>> [    9.898870] [drm] Loading CEDAR Microcode
>> [    9.908425] radeon 0000:05:00.0: WB enabled
>
> With CONFIG_DRM_RADEON=y, the microcode is needed before it can be
> loaded from userspace, so it needs to be built into the kernel as well.

How should I do that? I've tried to set all "m"s to "y" in .config and
still saw this issue. Should I set some special parameter?


Pavel