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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT][SKL] WARNING: no modes for connector 48 when running igt@kms_setmode@basic-clone-single-crtc"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101518#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT][SKL] WARNING: no modes for connector 48 when running igt@kms_setmode@basic-clone-single-crtc"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101518">bug 101518</a>
from <span class="vcard"><a class="email" href="mailto:bugs@mblankhorst.nl" title="Maarten Lankhorst <bugs@mblankhorst.nl>"> <span class="fn">Maarten Lankhorst</span></a>
</span></b>
<pre>Connector 48 from the logs is eDP-1.
What's interesting is that I see this:
[ 392.746337] [drm:drm_mode_prune_invalid] Not using 1920x1080 mode:
CLOCK_HIGH
Some more debugging from dmesg..
[ 382.469405] [drm:drm_helper_probe_single_connector_modes]
[CONNECTOR:48:eDP-1]
[ 382.469523] [drm:intel_dp_detect [i915]] [CONNECTOR:48:eDP-1]
[ 382.469656] [drm:intel_power_well_enable [i915]] enabling DC off
[ 382.469777] [drm:gen9_set_dc_state [i915]] Setting DC state from 02 to 00
[ 382.469871] [drm:intel_dp_detect [i915]] Display Port TPS3 support: source
yes, sink yes
[ 382.469947] [drm:intel_dp_print_rates [i915]] source rates: 162000, 216000,
270000, 324000, 432000, 540000
[ 382.470015] [drm:intel_dp_print_rates [i915]] sink rates: 162000, 270000
[ 382.470081] [drm:intel_dp_print_rates [i915]] common rates: 162000, 270000
[ 382.470249] [drm:edp_panel_vdd_on [i915]] Turning eDP port A VDD on
[ 382.470501] [drm:edp_panel_vdd_on [i915]] PP_STATUS: 0x80000008 PP_CONTROL:
0x0000000f
[ 382.471733] [drm:drm_dp_read_desc] DP sink: OUI 00-22-b9 dev-ID sivarT
HW-rev 0.0 SW-rev 0.0 quirks 0x0000
[ 382.472916] [drm:drm_edid_to_eld] ELD: no CEA Extension found
[ 382.472944] [drm:drm_helper_probe_single_connector_modes]
[CONNECTOR:48:eDP-1] probed modes :
[ 382.472970] [drm:drm_mode_debug_printmodeline] Modeline 49:"1920x1080" 60
138700 1920 1968 2000 2080 1080 1083 1088 1111 0x48 0x9
Ok, looks good.
Now getting weird HPD and tons of dp_aux_ch timeouts..
But what I also noticed..
$ grep ERROR dmesg-during.log
[ 385.088911] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable
link training
[ 390.392461] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable
link training
[ 391.236144] [drm:intel_dp_check_link_status [i915]] *ERROR* Failed to get
link status
[ 407.184193] [drm:intel_dp_check_link_status [i915]] *ERROR* Failed to get
link status
[ 417.936164] [drm:intel_dp_check_link_status [i915]] *ERROR* Failed to get
link status
[ 420.311740] [drm:intel_dp_check_link_status [i915]] *ERROR* Failed to get
link status
So I guess we fail with warn, without adding the dmesg error?</pre>
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