https://bugzilla.redhat.com/show_bug.cgi?id=1851845
v5 device requires explicit reset to switch to VGA mode.
Signed-off-by: Yuri Benditovich
---
qxldod/QxlDod.cpp | 4 +++-
qxldod/QxlDod.h | 2 ++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/qxldod/QxlDod.cpp b/qxldod/QxlDod.cpp
index 7f03ee1..341518e 100755
--- a/qxldod/QxlDod.cpp
+++ b/qxldod/QxlDod.cpp
@@ -134,6 +134,7 @@ NTSTATUS QxlDod::CheckHardware()
Header.DeviceID == 0x0100 &&
Header.RevisionID >= 4)
{
+m_Revision = Header.RevisionID;
Status = STATUS_SUCCESS;
}
@@ -4795,7 +4796,8 @@ NTSTATUS QxlDevice::HWClose(void)
{
PAGED_CODE();
QxlClose();
-if (m_bUefiMode)
+/* QXL device rev 5+ requires explicit reset to switch to VGA mode */
+if (m_bUefiMode || m_pQxlDod->Revision() > 4)
{
DbgPrint(TRACE_LEVEL_INFORMATION, ("%s: Resetting the device\n",
__FUNCTION__));
WRITE_PORT_UCHAR((PUCHAR)(m_IoBase + QXL_IO_RESET), 0);
diff --git a/qxldod/QxlDod.h b/qxldod/QxlDod.h
index 016b1aa..24cbd39 100755
--- a/qxldod/QxlDod.h
+++ b/qxldod/QxlDod.h
@@ -720,6 +720,7 @@ private:
KTIMER m_VsyncTimer;
KDPC m_VsyncTimerDpc;
BOOLEAN m_bVsyncEnabled;
+UCHAR m_Revision = 0;
LONG m_VsyncFiredCounter;
public:
QxlDod(_In_ DEVICE_OBJECT* pPhysicalDeviceObject);
@@ -819,6 +820,7 @@ public:
return
m_DxgkInterface.DxgkCbAcquirePostDisplayOwnership(m_DxgkInterface.DeviceHandle,
&DispInfo);
}
VOID EnableVsync(BOOLEAN bEnable);
+UCHAR Revision() const { return m_Revision; }
private:
VOID CleanUp(VOID);
NTSTATUS CheckHardware();
--
2.22.0.windows.1
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