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Allow DisplayPort detach bookkeeping when the sink is unplugged #1359

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Allow DisplayPort detach bookkeeping when the sink is unplugged #1359

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bd5d611
fix(displayport): allow detach when sink is unplugged
martinstark Sep 13, 2026
a2e8b26
Clarify DDS exception and unplugged detach bookkeeping
martinstark Sep 14, 2026
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13 changes: 10 additions & 3 deletions src/common/displayport/src/dp_connectorimpl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3861,11 +3861,18 @@ void ConnectorImpl::dpPreModeset(const DpPreModesetParams &params)
return;
}

// Skip gating modeset on HPD for DDS panels
// Skip gating modeset on HPD for DDS panels.
// Allow HPD-low detach bookkeeping; notifyLongPulse() permits detach.
if(!previousPlugged && !bClientForcedConnected && !main->isInternalPanelDynamicMuxCapable())
{
DP_ASSERT(0 && "DPCONN> dpPreModeset called when Plugged State is false!");
return;
for (NvU32 i = 0; i < NV_MAX_HEADS; i++)
{
if ((params.headMask & NVBIT(i)) && params.head[i].pTarget != NULL)
{
DP_ASSERT(0 && "DPCONN> dpPreModeset attach called when Plugged State is false!");
return;
}
}
}

this->bFECEnable |= this->needToEnableFEC(params);
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