(EE) RADEON: Failed to laod module fb (module does not exist, 0)
fbdev_drv.so definitely exists on the install media. Assuming this is reproducable, can you please attach /tmp/X.log?
*** Bug 485838 has been marked as a duplicate of this bug. ***
Taking out of NEEDINFO.
Sorry, it's not fbdev_drv.so that's the problem. It's libfb.so. And that still exists on this machine I've got booted up, so I wonder what the deal is.
I can reproduce this. With some trickery I've finally managed to get a full xorg.log of the failure. Strange enough if I make xorg log to a mounted usb-stick, it no longer fails to find the screens, so there seems to be some timing issue involved here. Will attach logs.
Created attachment 332507 [details] xorg.log of X failing to find screens on my radeon x1950
Created attachment 332508 [details] xorg.log of exact same X-start, but with logfile on usb-stick, this succeeds!! ??
Note: running with "nomodeset" makes the problem go away.
Diffing the 2 logs the following stands out: @@ -725,21 +725,263 @@ (++) RADEON(0): DPI set to (96, 96) (II) Loading sub module "fb" (II) LoadModule: "fb" -(WW) Warning, couldn't open module fb -(II) UnloadModule: "fb" -(EE) RADEON: Failed to load module "fb" (module does not exist, 0) -(II) UnloadModule: "radeon" -(II) UnloadModule: "int10" -(II) Unloading /usr/lib/xorg/modules//libint10.so -(II) UnloadModule: "vgahw" -(II) Unloading /usr/lib/xorg/modules//libvgahw.so -(EE) Screen(s) found, but none have a usable configuration. <snip> +(II) Loading /usr/lib/xorg/modules//libfb.so +(II) Module fb: vendor="X.Org Foundation" + compiled for 1.5.99.902, module version = 1.0.0 + ABI class: X.Org ANSI C Emulation, version 0.4 +(==) RADEON(0): Using gamma correction (1.0, 1.0, 1.0) So in one case it is finding / loading the fb module and in the other case it is not ???
I've been discussing this with airlied on irc, the problem is that radeon is getting loading by Xorg instead of earlier by udev, triggering a race. However I've just done a test where I first manually modprobed radeon and then I get a different error. Attaching log of this attempt.
Created attachment 332511 [details] xorg.log of trying to start X with radeon modprobed first.
Comment on attachment 332511 [details] xorg.log of trying to start X with radeon modprobed first. Ok, the third time I screwed up, I didn't have /sys mounted making X unhappy. With that fixed, and modprobing radeon befor starting X things work. So I'm reassignign this to kernel (radeon is missing module ID's) and xlosing (airlied just fixed the missing module ID's).