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 >