[Dev] [Assist] Fwd: Re: Xorg Problem with Radeon

[André Silva]

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On 09/12/2014 05:50 PM, Jorge Lopez wrote:
> On 12/09/14 22:07, Jorge Lopez wrote:
>> I attach the Dmesg of radeon: https://dpaste.de/4LKq I don't use
>> file to configure the driver radeon because if I use de 
>> 20-radeon.conf don't start the X
> And the Xorg.0.log. https://dpaste.de/hQOb

[lopez at cyberspeed2 ~]$ dmesg | grep radeon
[    9.220390] [drm] radeon kernel modesetting enabled.
[    9.220489] fb: switching to radeondrmfb from VESA VGA
[    9.221194] radeon 0000:01:00.0: VRAM: 512M 0x0000000000000000 -
0x000000001FFFFFFF (512M used)
[    9.221198] radeon 0000:01:00.0: GTT: 512M 0x0000000020000000 -
0x000000003FFFFFFF
[    9.221304] [drm] radeon: 512M of VRAM memory ready
[    9.221306] [drm] radeon: 512M of GTT memory ready.
[    9.269784] radeon 0000:01:00.0: Direct firmware load failed with
error -2
[    9.269789] radeon 0000:01:00.0: Falling back to user helper
[    9.385348] radeon 0000:01:00.0: Fatal error during GPU init
[    9.385356] [drm] radeon: finishing device.
[    9.386466] [drm] radeon: ttm finalized
[    9.393637] radeon: probe of 0000:01:00.0 failed with error -22

I've pasted your dmesg log (except Xorg.0.log because is very big) to
keeps it here permanently, because it will expire in 1 month on dpaste.de
Well, checking it and your Xorg.0.log you are using vesa instead of
radeon. Michał is right and like he says, you get black screen with
KMS exactly due to lack of firmware which newer kernel versions made
necessary for KMS.
So you have 2 ways to solve it, use vesa for this video card or buy a
new one with 100% free software support like my video card (Geforce
9800 GT) on Nouveau that doesn't needs blobs to use 2D and 3D features
normally.

There is a complete info in the Nouveau site about Nvidia chip code
names and their corresponding official GeForce number [0], a
featurematrix that represent big pieces of functionality (2D and 3D
features) [1] and video acceleration support status of them [2], but
you should pay attention before buy some of them, because some models
needs blobs to works like your case.
Otherwise, i've heard that intel video cards are a good alternative to
get full support with 100% free software too, but i don't know much
about that, maybe somebody could give you a better suggestion.

[0]:http://nouveau.freedesktop.org/wiki/CodeNames/
[1]:http://nouveau.freedesktop.org/wiki/FeatureMatrix/
[2]:http://nouveau.freedesktop.org/wiki/VideoAcceleration/
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