Does not start on some hardware, and has unreadable error messages

Nobody has claimed this yet.

Arch
linux-4.13.10-1
mesa 17.2.4-1
liri-shell-git 20171014.8ca7e54f-1

I have laptop with an NVIDIA chipset, GeForce 7150M / nForce 630M, that seems to run liri-shell without problem. But then, I have other machines on which liri-shell will not run. liri-shell seems to start, showing the spinning circle for a moment, and then quits, with an error message that over-writes the last line on the terminal display.

On another laptop machine with an Intel GPU using the i915 driver module, running "liri-session" from the virtual terminal, "liri-shell" returns with two different error messages. The circumstances that vary the error message are not clear.

The error message appears to over-writes the last informational line, which itself is truncated. Sometimes, the message is: 'Aborted (core dumped) cannot be mixed with others. Hzd_pixels_minmax GL_MESA_window_pos GL_EXT_multi_draw_arrays GL_EXT_stencil_wrap GL_ARB_sync GL_ARB_clear_texture GL_A'

At other times, the truncated message is:
'Abortedfailure in QList::take: "index out of range", file /usr/include/qt/QtCore/qlist.h, line 557rt.desktop"boprint-monitor.desktop"_ARB_texture_non_power_of_two GL_'
followed by the prompt, and then:

could not connect to wayland server
(EE)
Fatal server error:
(EE) Couldn't add screen
(EE)

On a desktop machine with a radeon card and a triple head display, the error messages are like:

[376033.507252] [drm:atombios_crtc_mode_fixup [radeon]] *ERROR* unable to allocate a PPLL
[376033.507265] [drm:drm_crtc_helper_set_config [drm_kms_helper]] *ERROR* failed to set mode on [CRTC:39:crtc-1]

where the driver fails to properly configure the graphics device for three simultaneous outputs.

Any thoughts about troubleshooting? Is there a way to get readable debugging output? Are these QtWayland or eglfs problems, as opposed to being liri-shell problems, per se?

Start by reproducing liri-shell through liri-session on the reported NVIDIA, Intel/i915, and Radeon triple-head setups while preserving complete terminal output. Compare the failures with the QtWayland and eglfs possibilities named in the report; done means identifying a reproducible cause and documenting a targeted fix or diagnostic path.

Written by the indexing model from the issue text.