I have a system with two graphics cards. The integrated one (Intel 630) and an nVidia. Monitor is connected to Intel HDMI port. My aim is to have the PC display(Ubuntu desktop etc..) on Intel and dedicate the nVidia card for CUDA operatations.
nVidia works fine.
Ubuntu desktop is getting displayed but its performance is poor. Video playback flickers and the CPU gets immediately hogged. Its apparent that the driver for intel card fails to be loaded thus the video processing goes to CPU.
On system details, I see:
Graphics: llvmpipe (LLVM 9.0, 256 bits) - which confirms the above suspicion.
Hardware seems to be correctly recognized:
$ lspci | egrep 'VGA|3D' 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation Device 1f08 (rev a1) $ sudo lshw -c video *-display description: VGA compatible controller product: NVIDIA Corporation vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:130 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:df000000-df07ffff *-display description: VGA compatible controller product: HD Graphics 630 vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 04 width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:127 memory:dd000000-ddffffff memory:b0000000-bfffffff ioport:f000(size=64) memory:c0000-dffff $ sudo prime-select intel Info: the intel profile is already set
Everyone pretty much suggests that the Intel driver should be automatically installed by Ubuntu. Seems that this is not the case. Any help will be highly appreciated!