The attachment in comment #10 confirms the problem is happening at a low
level in the kernel. Although Xorg could override that if it was smart
enough. In theory you can do it manually but would need to become an
expert at crafting modeline entries to get it working. I don't know how
myself. If that's possible then the data you need is in comment #7.
Obviously Windows 10 demonstrates that it is possible to support this
monitor with this HDMI port. Only Linux does not yet...
As a workaround, if you have a USB-C port and an appropriate
cable/adapter then you might be able to use the DisplayPort on the
monitor. If that works then it should give different timings and might
provide the 4K option... also at 60Hz instead of just 30Hz.
** Changed in: linux (Ubuntu)
Status: Incomplete => New
** Changed in: xorg-server (Ubuntu)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/1890418
Title:
i915 does not expose vendor-specific extended HDMI timings/modes
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