https://bugs.freedesktop.org/show_bug.cgi?id=73530
--- Comment #51 from Paul Menzel <paulepanter at users.sourceforge.net> ---
I tried Linux 3.13 with the patch below and I could not get the display to work
at all with the following script.
while true; do xrandr --output eDP --off && xrandr --output eDP --auto &&
sleep 4; done
---
drivers/gpu/drm/radeon/atombios_dp.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c
b/drivers/gpu/drm/radeon/atombios_dp.c
index fb3ae07..564bac0 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -912,13 +912,21 @@ void radeon_dp_link_train(struct drm_encoder
*encoder,
dp_info.dp_lane_count = dig_connector->dp_lane_count;
dp_info.dp_clock = dig_connector->dp_clock;
+ DRM_DEBUG_KMS("Before train_init\n");
+ msleep(10);
if (radeon_dp_link_train_init(&dp_info))
goto done;
+ DRM_DEBUG_KMS("Before train_cr\n");
+ msleep(10);
if (radeon_dp_link_train_cr(&dp_info))
goto done;
+ msleep(10);
+ DRM_DEBUG_KMS("Before train_ce\n");
if (radeon_dp_link_train_ce(&dp_info))
goto done;
done:
+ msleep(10);
+ DRM_DEBUG_KMS("Before train_finish\n");
if (radeon_dp_link_train_finish(&dp_info))
return;
}
--
1.9.rc1
I?ll post the errors tomorrow.
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