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| author | Marcin Slusarz <marcin.slusarz@gmail.com> | 2012-12-18 20:30:47 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-17 08:51:05 -0800 |
| commit | e5583b77083d74c988dfd8572cd8f7d246bf63ac (patch) | |
| tree | 7c02c507495011edacfc60bbd1ba34828f80cfb3 /fs/jbd/commit.c | |
| parent | 1353cac7123b29dc169e775a7f3cf20929d0ef72 (diff) | |
drm/nouveau: fix blank LVDS screen regression on pre-nv50 cards
commit 92441b2263866c27ef48137be5aa6c8c692652fc upstream.
Commit 2a44e499 ("drm/nouveau/disp: introduce proper init/fini, separate
from create/destroy") started to call display init routines on pre-nv50
hardware on module load. But LVDS init code sets driver state in a way
which prevents modesetting code from operating properly.
nv04_display_init calls nv04_dfp_restore, which sets encoder->last_dpms to
NV_DPMS_CLEARED.
drm_crtc_helper_set_mode
nv04_dfp_prepare
nv04_lvds_dpms(DRM_MODE_DPMS_OFF)
nv04_lvds_dpms checks last_dpms mode (which is NV_DPMS_CLEARED) and wrongly
assumes it's a "powersaving mode", the new one (DRM_MODE_DPMS_OFF) is too,
so it skips calling some crucial lvds scripts.
Reported-by: Chris Paulson-Ellis <chris@edesix.com>
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/jbd/commit.c')
0 files changed, 0 insertions, 0 deletions