I'm using Lubuntu 18.04 and Arandr 0.1.9 and sometimes my external display would start blinking on and off in rapid succession, making it unusable. This didn't happen on the Windows computers at 2 different repair shops, at least not within the 3 minute tests.
I bought a new monitor thinking the other one was defective. The new one did the same thing. I tried restarting and found this cleared the issue temporarily.
Based on the system restart working, as well as windows, I believe this to be a software issue. Anyone know what might cause a blinking screen like this?
I have a Lenovo G767 laptop with i7-3612QM processor and integrated intel HD4000 graphics.
owner@G700:~$ sudo lshw -C video
[sudo] password for owner:
*-display
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:27 memory:c0000000-c03fffff memory:b0000000-bfffffff ioport:3000(size=64) memory:c0000-dffff
