Progress! Based on information in dmesg, pasted in at the end of this message, I thought maybe the graphics device was found OK but the laptop was trying to drive an external monitor instead of the onboard display. Sure enough, when I boot without nomodeset option and with an external HDMI monitor attached the system does display to the external monitor with proper 1920x1080 resolution.
What does the "EDID is invalid:" message mean? Why is the driver/module expecting EDID major version 2 and getting 1? Does this have to do with the version of kbl_dmc firmware loaded to the graphics device? ---- guest@guest-ZenBook-UX431FA:~$ dmesg | egrep "drm|i915" [ 3.196687] fb: switching to inteldrmfb from EFI VGA [ 3.196881] [drm] Replacing VGA console driver [ 3.210304] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 3.210306] [drm] Driver supports precise vblank timestamp query. [ 3.212814] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 3.214857] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4) [ 3.228865] [drm] EDID has major version 2, instead of 1 [ 3.236620] [drm] EDID has major version 2, instead of 1 [ 3.240878] [drm] EDID has major version 2, instead of 1 [ 3.244590] [drm] EDID has major version 2, instead of 1 [ 3.244595] i915 0000:00:02.0: eDP-1: EDID is invalid: [ 3.244597] [drm] EDID has major version 2, instead of 1 [ 3.290049] [drm] Initialized i915 1.6.0 20180514 for 0000:00:02.0 on minor 0 [ 3.326674] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ 3.356268] fbcon: inteldrmfb (fb0) is primary device [ 4.724973] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821533 Title: failure to detect and use Intel 620 graphics pci id 3ea0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1821533/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
