US 12,366,912 B2
Activation of integrated graphical processing units
Chia-Cheng Lin, Taipei (TW); Hsin-Jen Lin, Taipei (TW); Heng-Fu Chang, Taipei (TW); and Chao-Shen Chen, Taipei (TW)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/555,478
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Jun. 29, 2021, PCT No. PCT/US2021/039484
§ 371(c)(1), (2) Date Oct. 13, 2023,
PCT Pub. No. WO2023/277869, PCT Pub. Date Jan. 5, 2023.
Prior Publication US 2024/0184354 A1, Jun. 6, 2024
Int. Cl. G06F 1/32 (2019.01); G06F 1/3212 (2019.01); G06F 1/3287 (2019.01)
CPC G06F 1/3287 (2013.01) [G06F 1/3212 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
an interface to receive a connection to an external display device;
an integrated graphical processing unit (GPU) communicatively coupled to the interface;
a discrete GPU communicatively coupled to the interface; and
a controller communicatively coupled to the integrated GPU and to the discrete GPU,
wherein the controller is to deactivate the discrete GPU and activate the integrated GPU in response to detection of the external display device being connected to the interface, and
wherein the controller is to control a multiplexer communicatively coupled to the integrated GPU, the discrete GPU, and the interface to:
select a connection to the integrated GPU in response to the connection to the external display device being detected,
simulate an unplug event to allow the multiplexer to switch from the discrete GPU to the integrated GPU, and
simulate a plug-in event to complete a hot plug detection cycle of the interface connected to the external display device.