Every once in a while my display's colors became muted, pastel, and less vibrant, but only on one monitor.
As a reminder, can you please post the output of:
sudo lshw -C video
The make and model of the graphics card(s) you are using and your current Kernel version?
description: VGA compatible controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
logical name: /dev/fb0
width: 64 bits
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=i915 latency=0 mode=1366x768 visual=truecolor xres=1366 yres=768
resources: iomemory:600-5ff iomemory:400-3ff irq:135 memory:6000000000-6000ffffff memory:4000000000-400fffffff ioport:4000(size=64) memory:c0000-dffff
Driver looks ok...
Can you run
Then, using the information for the second monitor found from the command above to replace
xrandr --output EXAMPLE --set "Broadcast RGB" "Full"
eDP would be the Built-In notebook monitor, withe HDMI being the secondary external monitor.
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