Justin Thank You Very Much!
What I've attempted is: create a randomly named .conf file with written blacklist i915
first in /etc/modules-load.d/ and in the second attempt in /etc/modprobe.d/
a quick control tells this
`linux-driver-management status
╒ Hardware Platform
╞ Platform Vendor : Hewlett-Packard
╘ Platform Model : 1656
Hybrid Graphics
╒ Primary GPU (iGPU)
╞ Device Name : 2nd Generation Core Processor Family Integrated Graphics Controller
╞ Manufacturer : Intel Corporation
╞ Product ID : 0x0116
╞ Vendor ID : 0x8086
╞ X.Org PCI ID : PCI:0:2:0
╘ Boot VGA : yes
╒ Secondary GPU (dGPU)
╞ Device Name : Seymour [Radeon HD 6400M/7400M Series] (Radeon HD 6490M)
╞ Manufacturer : Advanced Micro Devices, Inc. [AMD/ATI]
╞ Product ID : 0x6760
╞ Vendor ID : 0x1002
╞ X.Org PCI ID : PCI:1:0:0
╘ Boot VGA : no`
What to do? Thanks!