Softlockup on boot with Cape Verde XT on many kernels

[Federico]

No, with nomodeset I don't have the softlockup and I can boot, but Xorg
does not load the radeon driver.
The kernel logs some radeon errors

$ dmesg | grep drm
[    6.139753] [drm] Initialized drm 1.1.0 20060810
[    6.173103] [drm] VGACON disable radeon kernel modesetting.
[    6.173153] [drm:radeon_init] *ERROR* No UMS support in radeon module!
[   50.032476] [drm] VGACON disable radeon kernel modesetting.
[   50.032494] [drm:radeon_init] *ERROR* No UMS support in radeon module!
[   89.408520] [drm] VGACON disable radeon kernel modesetting.
[   89.408526] [drm:radeon_init] *ERROR* No UMS support in radeon module!

Here's Xorg.log. It tries to load radeon, but then in unloads it.

https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1386973/+attachment/4296840/+files/Xorg.0.log

I also checked the bios and yes, the IGP is disabled and the setting is set
to start from the PCI Express slot.


2015-01-12 21:48 GMT+00:00 Alex Deucher <alexdeucher at gmail.com>:

> On Sun, Jan 11, 2015 at 3:27 PM, Federico <federicotg at gmail.com> wrote:
> > Ubuntu 14.10 (kernel is 3.16.0) with nomodeset also boots. But it seems
> to
> > be using the a generic driver
>
> Right.  As I mentioned, using nomodeset disables the gfx driver and
> you end up with fw drivers (vesa of efifb).  Do you still have the
> issue even with nomodeset as you previously stated?
>
> Alex
>
> >
> > cat /var/log/kern.log | grep ERROR
> > Jan 11 20:07:56 ubuntu kernel: [    6.174086] [drm:radeon_init] *ERROR*
> No
> > UMS support in radeon module!
> > Jan 11 20:07:56 ubuntu kernel: [   54.093686] [drm:radeon_init] *ERROR*
> No
> > UMS support in radeon module!
> > Jan 11 20:08:10 ubuntu kernel: [   94.983647] [drm:radeon_init] *ERROR*
> No
> > UMS support in radeon module!
> >
> > glxinfo | grep Open
> > OpenGL vendor string: VMware, Inc.
> > OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.5, 128 bits)
> > OpenGL version string: 3.0 Mesa 10.3.0
> > OpenGL shading language version string: 1.30
> > OpenGL context flags: (none)
> > OpenGL extensions:
> >
> >
> > 2015-01-11 19:44 GMT+00:00 Federico <federicotg at gmail.com>:
> >>
> >>
> >>
> >> 2015-01-11 14:19 GMT-03:00 Alex Deucher <alexdeucher at gmail.com>:
> >>>
> >>> Booting with nomodeset disables the graphics drivers so if you are
> >>> still getting problems, it may a hardware problem.  Can you attach
> >>> your full dmesg and lspci output?  Are you disabling the onboard
> >>> graphics when enabling the external dGPU?
> >>>
> >>> Alex
> >>
> >>
> >> I attached those outputs to
> >> https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1386973
> >> I wasn't sure if you meant attaching to this response.
> >>
> >> I was able to boot with nomodeset into Ubuntu 15.04's image. I get to a
> >> graphic log in screen, but I also get some errors in the kernel log
> >>
> >> [drm:radeon_init] *ERROR* No UMS support in radeon module!
> >>
> >> Which seems by design so I assume the VESA driver was in use.
> >>
> >> I will try to boot Ubuntu 14.10 live image with nomodeset to see if I
> can
> >> get some error messages there.
> >
> >
> >
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/dri-devel
> >
>
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