I have a 6k monitor and so far have only been able to get it to use 4k in qubes dom0
The GPU is an Intel Arc A310 Eco (uses i915) which despite being a single slot, half width card, has 8k capabilities, via its mini-dp or HDMI ports. The monitor is Dell U3224KB (6k)
I’m not going to get deep into the specific issues I’ve encountered this far as it isn’t my first rodeo and there’s plenty more troubleshooting to do before dragging someone else into it
So, consider this a survey- has anyone got 5k, 6k or 8k to work in dom0? With an open ir proprietary driver? AMD, Nvidia or Intel? Any tips/pitfalls? … I don’t care about acceleration, I just want the pixels. I have a 7965WX that should handle the software rendering without too much of a problem
Because the monitor cost as much as an F35 fighter jet with chrome rims, I’m willing to buy any GPU proven to work in such a configuration. Though I fear I may literally be the only person in the world with this monitor using Qubes
For those insisting on knowing what I’ve tried
- Tried setting the Xorg intel/i915 and modesetting drivers, in an xorg config file section. Highest resolution either picked up is 4k
- Tried forcing a modeline specific to the resolution- via in Xorg config and also via xrandr/arandr (vague error about crt fail)
- Was going to try forcing Xorg to use a 6k EDID file but I haven’t been able to find or generate one (found a script that generates the blobs but it complained about the aspect ratio)
What I have not tried:
- The obvious, see if it works in Ubuntu, with vanilla and out of tree i915 drivers
- See if it works with Windows
- See if I can get a Good Enough solution by rigging up Xinerama or Zaphodheads, by creating two logical screens on the single physical display
- Buying an AMD or Nvidia GPU…
My next post in some days/weeks will include details in case anyone has more experience with this and is willing to lend a hand…