I have a screen flickering since my first Ubuntu 16.04.4 LTS installation and tried everything mentioned in this post: Flickering screen with Intel graphics on Ubuntu 17.04 and setting it to nomodeset helps. My problem is that if i set it to nomodeset my second screen, connected via HDMI isn't recognized.
If i don't set nomodeset, HDMI is recognized and it does not flicker on the HDMI screen, just on my laptop screen.
I would love to use both screens!
this is my lshw -C video
*-display
description: VGA compatible controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915_bpo latency=0
resources: irq:127 memory:b0000000-b0ffffff memory:a0000000-afffffff ioport:5000(size=64)
Your video adapter is probably poorly supported by the old 4.4 kernel.
You can upgrade the kernel in Ubuntu 16.04 to a newer major version by running
sudo apt install linux-generic-hwe-16.04
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