[Bug 73530] Asus U38N: Black screen with Radeon driver in Linux 3.10, 3.11, 3.12, 3.13 (original) (raw)
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Sat Feb 1 03:50:26 PST 2014
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https://bugs.freedesktop.org/show_bug.cgi?id=73530
--- Comment #55 from Paul Menzel <paulepanter at users.sourceforge.net> --- Changing the 400 μs to 800 μs and 400 μs did not change anything.
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 676ddf8..3e533bb 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -204,7 +204,7 @@ static int radeon_dp_aux_native_read(struct radeon_connector *radeon_connector, if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) return ret; else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER)
udelay(800);
udelay(200); else if (ret == 0) return -EPROTO; else
@@ -293,7 +293,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, return -EREMOTEIO; case AUX_NATIVE_REPLY_DEFER: DRM_DEBUG_KMS("aux_ch native defer\n");
udelay(800);
udelay(200); continue; default: DRM_ERROR("aux_ch invalid native reply 0x%02x\n", ack);
@@ -310,7 +310,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, return -EREMOTEIO; case AUX_I2C_REPLY_DEFER: DRM_DEBUG_KMS("aux_i2c defer\n");
udelay(800);
udelay(200); break; default: DRM_ERROR("aux_i2c invalid reply 0x%02x\n", ack);
@@ -716,7 +716,7 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info)
static int radeon_dp_link_train_finish(struct radeon_dp_link_train_info *dp_info) {
udelay(800);
udelay(200); /* disable the training pattern on the sink */ radeon_write_dpcd_reg(dp_info->radeon_connector,
@@ -744,7 +744,7 @@ static int radeon_dp_link_train_cr(struct radeon_dp_link_train_info *dp_info) memset(dp_info->train_set, 0, 4); radeon_dp_update_vs_emph(dp_info);
udelay(800);
udelay(200); /* clock recovery loop */ clock_recovery = false;
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