From: Cedric Godin cedric.godin@skynet.be

When suspending, we turn the display hw off, at resume the screen will stay black. This patch turn it on. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=16180

Signed-off-by: Cedric Godin cedric.godin@skynet.be Signed-off-by: Alex Deucher alexdeucher@gmail.com --- drivers/gpu/drm/radeon/radeon_device.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index f10faed..5f31731 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -779,6 +779,7 @@ int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)

int radeon_resume_kms(struct drm_device *dev) { + struct drm_connector *connector; struct radeon_device *rdev = dev->dev_private;

if (rdev->powered_down) @@ -797,6 +798,12 @@ int radeon_resume_kms(struct drm_device *dev) radeon_resume(rdev); radeon_pm_resume(rdev); radeon_restore_bios_scratch_regs(rdev); + + /* turn on display hw */ + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); + } + radeon_fbdev_set_suspend(rdev, 0); release_console_sem();