I ran inxi -F and got this: it looks like my Nvidia drivers for the GeForce GT 650M are unloaded. So how do I load them???
inxi -F
System: Host: clindsay-Lenovo-IdeaPad-Y500 Kernel: 4.15.0-43-generic x86_64 bits: 64
Desktop: KDE Plasma 5.12.6 Distro: Ubuntu 18.04.1 LTS
Machine: Device: laptop System: LENOVO product: 9541 v: Lenovo IdeaPad Y500 serial: N/A
Mobo: LENOVO model: INVALID v: 31900003WIN8 STD MLT serial: N/A
UEFI [Legacy]: LENOVO v: 6BCN31WW(V1.03) date: 10/08/2012
Battery BAT1: charge: 5.6 Wh 100.0% condition: 5.6/6.3 Wh (89%)
CPU: Quad core Intel Core i7-3630QM (-MT-MCP-) cache: 6144 KB
clock speeds: max: 3400 MHz 1: 1226 MHz 2: 1204 MHz 3: 1229 MHz 4: 1200 MHz 5: 1197 MHz 6: 1240 MHz
7: 1230 MHz 8: 1284 MHz
Graphics: Card: NVIDIA GK107M [GeForce GT 650M]
Display Server: x11 (X.Org 1.19.6 ) drivers: nvidia (unloaded: modesetting,fbdev,vesa,nouveau)
Resolution: 1920x1080@59.93hz
OpenGL: renderer: N/A version: N/A
Audio: Card-1 NVIDIA GK107 HDMI Audio Controller driver: snd_hda_intel Sound: ALSA v: k4.15.0-43-generic
Card-2 Intel 7 Series/C216 Family High Definition Audio Controller driver: snd_hda_intel
Network: Card-1: Qualcomm Atheros AR8161 Gigabit Ethernet driver: alx
IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: 20:89:84:1f:8a:d5
Card-2: Intel Centrino Wireless-N 2230 driver: iwlwifi
IF: wlp3s0 state: down mac: 60:36:dd:61:3c:3a
Drives: HDD Total Size: 320.1GB (8.5% used)
ID-1: /dev/sda model: WDC_WD3200BEKT size: 320.1GB
Partition: ID-1: / size: 293G used: 26G (10%) fs: ext4 dev: /dev/sda1
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 54.0C mobo: N/A gpu: 47C
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 243 Uptime: 6 days Memory: 3090.7/7927.1MB Client: Shell (bash) inxi: 2.3.56