For reference: https://lists.freedesktop.org/archives/mesa-dev/2016-May/115453.html 2018-04-24 21:55 GMT+02:00 Mathieu Malaterre <malat at debian.org>: > AGP mode is unstable on PowerPC. Symptoms are generally of the form: > > [ 1228.795711] radeon 0000:00:10.0: ring 0 stalled for more than 10240msec > > Reviewed-by: Christian König <christian.koenig at amd.com> > Signed-off-by: Mathieu Malaterre <malat at debian.org> > --- > drivers/gpu/drm/radeon/radeon_drv.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c > index b28288a781ef..2a7977a23b31 100644 > --- a/drivers/gpu/drm/radeon/radeon_drv.c > +++ b/drivers/gpu/drm/radeon/radeon_drv.c > @@ -168,7 +168,12 @@ int radeon_no_wb; > int radeon_modeset = -1; > int radeon_dynclks = -1; > int radeon_r4xx_atom = 0; > +#ifdef __powerpc__ > +/* Default to PCI on PowerPC (fdo #95017) */ > +int radeon_agpmode = -1; > +#else > int radeon_agpmode = 0; > +#endif > int radeon_vram_limit = 0; > int radeon_gart_size = -1; /* auto */ > int radeon_benchmarking = 0; > -- > 2.11.0 >
