System to enable display detect and method therefor
AssigneeDell Products L.P.
InventorEric Sendelbach
Life of this patent
Estimating the term…
Abstract
A method may include executing basic input/output system (BIOS) instructions to initialize an information handling system. The initialization may include generating a hot-plug detect (HPD) override request. The method may further include receiving the HPD override request at a general purpose input/output (GPIO) device. In response to receiving the HPD override request, the GPIO may assert an active-low signal at an interconnect electrically connected to a HPD terminal of a graphics display receptacle, the receptacle for coupling a graphics processing unit to a graphics display device.
Claims20
An information handling system comprising:
- a display receptacle to couple the information handling system to a graphics display device, the receptacle including a hot-plug detect (HPD) terminal configured to receive an HPD signal from the graphics display device;
- a general purpose input/output (GPIO) device, an output of the GPIO device electrically coupled to the HPD terminal;
- and
- a central processing unit (CPU) to execute basic input/output system (BIOS) instructions, the BIOS instructions to configure the GPIO to assert an active-low signal at an interconnect electrically connected to the HPD terminal.
A method comprising:
- executing basic input/output system (BIOS) instructions to initialize an information handling system, the initialization including generating a hot-plug detect (HPD) override request;
- receiving the HPD override request at a general purpose input/output (GPIO) device;
- and
- in response to receiving the HPD override request, asserting an active-low signal at an interconnect electrically connected to an HPD terminal of a graphics display receptacle, the receptacle for coupling a graphics processing unit to a graphics display device.
A circuit board comprising:
- a graphics processing unit (GPU);
- a display receptacle to couple the GPU to a graphics display device, the receptacle including a hot-plug detect (HPD) terminal configured to receive an HPD signal from the graphics display device;
- a general purpose input/output (GPIO) device, an output of the GPIO device electrically coupled to the HPD terminal;
- and
- a central processing unit to execute basic input/output system (BIOS) instructions, the BIOS instructions to configure the GPIO to assert an active-low signal at an interconnect electrically connected to the HPD terminal.
Dependencies are inferred from the claim text.