https://bugs.freedesktop.org/show_bug.cgi?id=49943
--- Comment #6 from Harald Judt h.judt@gmx.at 2012-06-14 16:09:16 PDT --- Yes, the computer prints these everytime I plug or unplug the HDMI monitor:
[drm:evergreen_irq_process], IH: HPD6
There are exactly 6 such messages to be found in dmesg, that would exactly correspond to connecting and disconnecting the monitor 3 times.
More data, perhaps useful:
[drm] Connector 2: [drm] HDMI-A [drm] HPD6 [drm] DDC: 0x6460 0x6460 0x6464 0x6464 0x6468 0x6468 0x646c 0x646c [drm] Encoders: [drm] DFP3: INTERNAL_UNIPHY1 .... [drm:evergreen_irq_set], evergreen_irq_set: sw int cp1 [drm:evergreen_irq_set], evergreen_irq_set: sw int cp2 [drm:evergreen_irq_set], evergreen_irq_set: vblank 2 [drm:evergreen_irq_set], evergreen_irq_set: vblank 3 [drm:evergreen_irq_set], evergreen_irq_set: vblank 4 [drm:evergreen_irq_set], evergreen_irq_set: vblank 5 [drm:evergreen_irq_set], evergreen_irq_set: hpd 1 [drm:evergreen_irq_set], evergreen_irq_set: hpd 3 [drm:evergreen_irq_set], evergreen_irq_set: hpd 4 [drm:evergreen_irq_set], evergreen_irq_set: hpd 5 [drm:evergreen_irq_set], evergreen_irq_set: hpd 6 [drm:drm_calc_vbltimestamp_from_scanoutpos], crtc 1 : v 5 p(2174,501)@ 1339714655.238103 -> 1339714655.230668 [e 1 us, 0 rep] [drm:evergreen_irq_process], r600_irq_process start: rptr 19552, wptr 19568 [drm:evergreen_irq_process], IH: HPD6 [drm:evergreen_irq_process], r600_irq_process start: rptr 19568, wptr 19584 [drm:evergreen_irq_process], IH: HPD6 [drm:evergreen_irq_process], r600_irq_process start: rptr 19584, wptr 19600 [drm:evergreen_irq_process], IH: HPD6 [drm:evergreen_irq_process], r600_irq_process start: rptr 19600, wptr 19616 [drm:evergreen_irq_process], IH: HPD6 [drm:evergreen_irq_process], r600_irq_process start: rptr 19616, wptr 19632 [drm:evergreen_irq_process], IH: HPD6