yes, I have in the video group.

the version of mesa is

   media-libs/mesa
      Latest version available: 17.0.6
      Latest version installed: 17.0.6
      Size of files: 9,273 KiB
      Homepage:      https://www.mesa3d.org/ https://mesa.freedesktop.org/
      Description:   OpenGL-like graphic library for Linux
      License:       MIT

this is the first time to use the nouveau driver, I used the AMD video
card, the model was HD6580, and the driver was radeon before.


On Tue, Aug 29, 2017 at 2:28 PM, Alexander Kapshuk <
alexander.kapshuk@gmail.com> wrote:

> On Tue, Aug 29, 2017 at 12:35 PM, Alexander Kapshuk
> <alexander.kapshuk@gmail.com> wrote:
> > On Mon, Aug 28, 2017 at 7:41 PM, Alexander Kapshuk
> > <alexander.kapshuk@gmail.com> wrote:
> >> On Mon, Aug 28, 2017 at 6:30 PM, IceAmber <iceamber2015@gmail.com>
> wrote:
> >>> here is the result
> >>>
> >>> iceamber@localhost:~ $ lsmod | grep nouveau
> >>> nouveau              1507328  2
> >>> i2c_algo_bit           16384  1 nouveau
> >>> drm_kms_helper        118784  1 nouveau
> >>> ttm                    77824  1 nouveau
> >>> drm                   282624  5 nouveau,ttm,drm_kms_helper
> >>> agpgart                32768  3 nouveau,ttm,drm
> >>> led_class              16384  3 input_leds,hid_sony,nouveau
> >>>
> >>>
> >>
> >> Your nouveau kernel driver seems to be OK. That's good news.
> >> The bad news is we're back to square one.
> >>
> >> It was glxinfo, which is a part of x11-apps/mesa-progs, that generated
> >> the original error message.
> >> So, perhaps, it is a mesa problem.
> >>
> >> Can you please try this command line and see what it outputs:
> >> LIBGL_DEBUG=verbose glxgears
> >
> > This reference may help better debug your problem:
> > https://nouveau.freedesktop.org/wiki/MesaDrivers/
>
> The Mesa drivers wiki page above says:
>
> nv50 and nvc0
>
> Make sure you are using at least Mesa 7.11, but please consider using
> latest stable release. You have to use at least the 2.6.38 kernel or
> you will encounter memory corruptions. For nvc0 hardware it's
> recommended to use at least kernel 3.1.
>
> Bug reports for nv50 and nvc0 can be submitted by following the
> general reporting guidelines. Please, also follow the About bugs and
> problems section above.
>
> What version is your media-libs/mesa?
>
> Is this the first time you've run into this trouble using the nouveau
> driver?
> What driver did you use before with this piece of hardware proprietary
> nvidia one, or nouveau?
>
>