Not an issue here on my optimus laptop (slightly aged as latest laptop
is nvidia only
$ uname -a && xrandr --verbose |grep PRIME && sudo cat
/sys/module/nvidia_drm/parameters/modeset
Linux doug-Lenovo-IdeaPad-Y510P 5.4.0-48-generic #52~18.04.1-Ubuntu SMP Thu Sep
10 12:50:22 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
PRIME Synchronization: 1
PRIME Synchronization: 1
PRIME Synchronization: 1
Y
$ inxi -CG
CPU: Quad core Intel Core i7-4700MQ (-MT-MCP-) cache: 6144 KB
clock speeds: max: 3400 MHz 1: 1381 MHz 2: 1736 MHz 3: 1339 MHz 4:
1811 MHz 5: 1336 MHz 6: 1453 MHz
7: 1588 MHz 8: 1503 MHz
Graphics: Card-1: Intel 4th Gen Core Processor Integrated Graphics Controller
Card-2: NVIDIA GK107M [GeForce GT 755M]
Display Server: x11 (X.Org 1.20.8 ) drivers: modesetting,nvidia
(unloaded: fbdev,vesa,nouveau)
Resolution: 1920x1080@59.91hz
OpenGL: renderer: GeForce GT 755M/PCIe/SSE2 version: 4.6.0 NVIDIA
450.57
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https://bugs.launchpad.net/bugs/1857271
Title:
Focal PRIME Synchronization still not working (450.x)
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