[Bug 91508] [i915] External monitor doesn't work resuming from screen saver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91508

--- Comment #12 from Derek Yerger <dy at drexel.edu> ---
Failed suspend/resume always results in the following:

$ grep "payload 1 1" debug14*
debug14-8s:[ 1102.530611] [drm:drm_dp_update_payload_part2] payload 1 1
debug14-9s:[ 1130.909691] [drm:drm_dp_update_payload_part2] payload 1 1

$ grep qlock debug14*
debug14-10s:[ 1148.486445] [drm:set_hdr_from_dst_qlock] set_hdr_from_dst_qlock:
failed to find slot
debug14-10s:[ 1148.486449] [drm:process_single_down_tx_qlock] failed to send
msg in q -11
debug14-11s:[ 1162.850656] [drm:set_hdr_from_dst_qlock] set_hdr_from_dst_qlock:
failed to find slot
debug14-11s:[ 1162.850657] [drm:process_single_down_tx_qlock] failed to send
msg in q -11
debug14-11s:[ 1162.876006] [drm:set_hdr_from_dst_qlock] set_hdr_from_dst_qlock:
failed to find slot
debug14-11s:[ 1162.876007] [drm:process_single_down_tx_qlock] failed to send
msg in q -11
debug14-11s:[ 1162.876144] [drm:set_hdr_from_dst_qlock] set_hdr_from_dst_qlock:
failed to find slot
debug14-11s:[ 1162.876145] [drm:process_single_down_tx_qlock] failed to send
msg in q -11
debug14-11s:[ 1174.216766] [drm:set_hdr_from_dst_qlock] set_hdr_from_dst_qlock:
failed to find slot
debug14-11s:[ 1174.216767] [drm:process_single_down_tx_qlock] failed to send
msg in q -11

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