drm pipe state doesn't match

[Ron Georgia <netverbs%gmail.com@localhost>]

All,
I am seeing this dmesg error. I am not sure where to start in order to
resolve this.

[     8.828684] {drm:netbsd:intel_set_cpu_fifo_underrun_reporting+0x284} *ERROR* uncleared fifo underrun on pipe A
[     8.828684] {drm:netbsd:intel_cpu_fifo_underrun_irq_handler+0x67} *ERROR* CPU pipe A FIFO underrun
[     8.839110] {drm:netbsd:intel_set_pch_fifo_underrun_reporting+0x14e} *ERROR* uncleared pch fifo underrun on pch transcoder A
[     8.839110] {drm:netbsd:cpt_irq_handler+0x1df} *ERROR* PCH transcoder A FIFO underrun
[     8.848685] {drm:netbsd:pipe_config_infoframe_mismatch+0x40} *ERROR* mismatch in hdmi infoframe
[     8.848685] {drm:netbsd:pipe_config_infoframe_mismatch+0x4e} *ERROR* expected:
[     8.848685] i915drmkms0: 68 bytes @ 0xffff86cb0a52cbe8
[     8.848685] 81 00 00 00 01 00 00 00  03 0c 00 00 00 00 00 00 | ................
[     8.848685] ff ff ff ff 00 00 00 00  00 00 00 00 00 00 00 00 | ................
[     8.859125] 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................
[     8.859125] 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................
[     8.859125] 00 00 00 00                                      | ....
[     8.859125] {drm:netbsd:pipe_config_infoframe_mismatch+0x6f} *ERROR* found:
[     8.859125] i915drmkms0: 68 bytes @ 0xffff86cb0a54dbe8
[     8.859125] 81 00 00 00 01 04 00 00  00 00 00 00 00 00 00 00 | ................
[     8.859125] 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................
[     8.859125] 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................
[     8.869301] 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................
[     8.869301] 00 00 00 00                                      | ....
[     8.869301] warning: /usr/src/sys/external/bsd/drm2/dist/drm/i915/display/intel_display.c:14031: pipe state doesn't match!

-- 
Ron Georgia
ronverbs.org
"Be at peace with your own soul, then heaven and earth will be at peace with you." ~ St. Jerome