few tests - dmesg-warn - *ERROR* LSPCON mode hasn't settled
<7> [694.652312] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.653574] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.654919] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.656312] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.657574] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.658222] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: Too many retries, giving up
<7> [694.660047] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.661402] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.662831] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.664227] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.665574] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.666930] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.668307] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.668942] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: Too many retries, giving up
<7> [694.669578] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.670668] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.672065] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.673462] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.674857] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.676229] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.677572] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.678196] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: Too many retries, giving up
<7> [694.678220] i915 0000:00:02.0: [drm:drm_lspcon_get_mode [drm_display_helper]] LSPCON read(0x80, 0x41) failed
<7> [694.678232] i915 0000:00:02.0: [drm:lspcon_get_current_mode [i915]] Error reading LSPCON mode
<3> [694.678411] i915 0000:00:02.0: [drm] *ERROR* LSPCON mode hasn't settled
<7> [694.678447] i915 0000:00:02.0: [drm:lspcon_wait_mode [i915]] Current LSPCON mode INVALID
<7> [694.679353] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.680759] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.682122] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.683472] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.684835] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer
<7> [694.686225] i915 0000:00:02.0: [drm:drm_dp_i2c_do_msg [drm_display_helper]] AUX B/DDI B/PHY B: native defer