After installing Ubuntu 18.04 on my Intel NUC (Intel Celeron CPU J3455 @ 1.50GHz × 4) with a Intel HD Graphics 500 (Broxton 2x6) card I'm getting odd interference pattern like in image below. Any ideas what may be causing this? Output of lshw -C video is

*-display description: VGA compatible controller product: Intel Corporation vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 0b width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:129 memory:90000000-90ffffff memory:80000000-8fffffff ioport:f000(size=64) memory:c0000-dffff

Sceenshot of effect

  • If this helps I'm connecting to a 22" LG HD TV but Ubuntu shows it as a 23" Goldstar HD TV. I have to manually resize the display using the TV settings to fix the 1" difference in screen size. – Bill Callinder-Scott Aug 24 '18 at 19:01
  • Same issue here, you found the solution? – JPelletier Aug 28 '18 at 14:45
  • I was hoping someone with a bit more knowledge than me would have come up with a solution. Now I've messed about with the settings so much I suspect a fresh full installation using the TV may be the only solution. I've changed the HDMI cable for a vastly superior one but it didn't work. I thought it may have been interference effecting the picture. All I know is that some checks show i915 driver being used whereas others show modesetting driver being used and I can't see a way of forcing one or the other. – Bill Callinder-Scott Aug 31 '18 at 15:24

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